./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe009_power.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe009_power.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_power.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe009_power.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:14:31,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:14:31,759 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:14:31,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:14:31,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:14:31,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:14:31,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:14:31,775 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:14:31,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:14:31,776 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:14:31,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:14:31,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:14:31,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:14:31,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:14:31,777 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:14:31,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:14:31,778 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:14:31,778 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:14:31,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:14:31,779 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:14:31,779 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:14:31,779 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:14:31,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:14:31,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:14:31,780 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:14:31,780 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:14:31,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:14:31,781 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:14:31,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:14:31,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:14:31,782 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:14:31,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:14:31,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:14:31,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:14:31,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:14:31,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:14:31,783 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:14:31,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:14:31,783 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:14:31,784 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:14:31,784 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:14:31,784 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:14:31,784 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:14:31,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:14:31,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:14:31,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:14:31,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:14:31,935 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:14:31,936 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:14:31,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_power.oepc.i [2024-06-28 00:14:33,224 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:14:33,575 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:14:33,584 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_power.oepc.i [2024-06-28 00:14:33,603 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6de800829/36602f64b24a4b8abc4d930c47ab9d75/FLAG7a82ea991 [2024-06-28 00:14:33,615 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6de800829/36602f64b24a4b8abc4d930c47ab9d75 [2024-06-28 00:14:33,618 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:14:33,618 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:14:33,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe009_power.oepc.yml/witness.yml [2024-06-28 00:14:33,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:14:33,725 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:14:33,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:14:33,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:14:33,732 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:14:33,733 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:14:33" (1/2) ... [2024-06-28 00:14:33,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c91451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:14:33, skipping insertion in model container [2024-06-28 00:14:33,734 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:14:33" (1/2) ... [2024-06-28 00:14:33,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7a593a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:14:33, skipping insertion in model container [2024-06-28 00:14:33,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:14:33" (2/2) ... [2024-06-28 00:14:33,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c91451 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:33, skipping insertion in model container [2024-06-28 00:14:33,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:14:33" (2/2) ... [2024-06-28 00:14:33,739 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:14:33,769 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:14:33,771 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice1 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-28 00:14:33,771 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice1 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-28 00:14:33,772 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice1 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-28 00:14:33,772 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:14:33,772 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-06-28 00:14:33,827 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:14:34,152 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:14:34,160 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:14:34,352 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:14:34,380 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:14:34,381 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:34 WrapperNode [2024-06-28 00:14:34,381 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:14:34,382 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:14:34,382 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:14:34,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:14:34,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:34" (1/1) ... [2024-06-28 00:14:34,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:34" (1/1) ... [2024-06-28 00:14:34,439 INFO L138 Inliner]: procedures = 175, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 179 [2024-06-28 00:14:34,440 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:14:34,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:14:34,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:14:34,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:14:34,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:34" (1/1) ... [2024-06-28 00:14:34,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:34" (1/1) ... [2024-06-28 00:14:34,483 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:34" (1/1) ... [2024-06-28 00:14:34,510 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-06-28 00:14:34,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:34" (1/1) ... [2024-06-28 00:14:34,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:34" (1/1) ... [2024-06-28 00:14:34,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:34" (1/1) ... [2024-06-28 00:14:34,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:34" (1/1) ... [2024-06-28 00:14:34,541 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:34" (1/1) ... [2024-06-28 00:14:34,549 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:34" (1/1) ... [2024-06-28 00:14:34,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:14:34,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:14:34,559 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:14:34,559 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:14:34,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:34" (1/1) ... [2024-06-28 00:14:34,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:14:34,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:14:34,581 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 00:14:34,583 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 00:14:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 00:14:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 00:14:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 00:14:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 00:14:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:14:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:14:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:14:34,611 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:14:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:14:34,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:14:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 00:14:34,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 00:14:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:14:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 00:14:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:14:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:14:34,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:14:34,614 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 00:14:34,763 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:14:34,765 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:14:35,423 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:14:35,423 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:14:35,833 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:14:35,834 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:14:35,834 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:14:35 BoogieIcfgContainer [2024-06-28 00:14:35,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:14:35,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:14:35,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:14:35,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:14:35,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:14:33" (1/4) ... [2024-06-28 00:14:35,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43549594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:14:35, skipping insertion in model container [2024-06-28 00:14:35,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:14:33" (2/4) ... [2024-06-28 00:14:35,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43549594 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:14:35, skipping insertion in model container [2024-06-28 00:14:35,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:14:34" (3/4) ... [2024-06-28 00:14:35,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43549594 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:14:35, skipping insertion in model container [2024-06-28 00:14:35,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:14:35" (4/4) ... [2024-06-28 00:14:35,845 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_power.oepc.i [2024-06-28 00:14:35,862 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:14:35,863 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 00:14:35,863 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:14:35,945 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:14:35,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 00:14:36,031 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-28 00:14:36,032 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:14:36,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:14:36,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 00:14:36,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-28 00:14:36,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:14:36,108 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;@3a413b84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:14:36,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 00:14:36,116 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:14:36,117 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 00:14:36,117 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:14:36,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:36,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:14:36,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:36,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:36,130 INFO L85 PathProgramCache]: Analyzing trace with hash 719454709, now seen corresponding path program 1 times [2024-06-28 00:14:36,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:36,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235875630] [2024-06-28 00:14:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:36,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:38,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:38,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235875630] [2024-06-28 00:14:38,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235875630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:38,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:38,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:14:38,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505828697] [2024-06-28 00:14:38,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:38,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:14:38,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:38,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:14:38,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:14:38,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 00:14:38,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:38,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:38,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 00:14:38,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:39,078 INFO L124 PetriNetUnfolderBase]: 990/1529 cut-off events. [2024-06-28 00:14:39,078 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 00:14:39,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3109 conditions, 1529 events. 990/1529 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7065 event pairs, 650 based on Foata normal form. 1/1499 useless extension candidates. Maximal degree in co-relation 3097. Up to 1503 conditions per place. [2024-06-28 00:14:39,089 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 34 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 00:14:39,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 179 flow [2024-06-28 00:14:39,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:14:39,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:14:39,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-06-28 00:14:39,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528455284552846 [2024-06-28 00:14:39,098 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 68 transitions. [2024-06-28 00:14:39,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 179 flow [2024-06-28 00:14:39,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:14:39,102 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-28 00:14:39,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-28 00:14:39,106 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-28 00:14:39,106 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-28 00:14:39,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:39,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:39,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:39,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:14:39,107 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:39,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:39,107 INFO L85 PathProgramCache]: Analyzing trace with hash -93558104, now seen corresponding path program 1 times [2024-06-28 00:14:39,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:39,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094430881] [2024-06-28 00:14:39,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:39,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:41,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:41,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094430881] [2024-06-28 00:14:41,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094430881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:41,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:41,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:14:41,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641086827] [2024-06-28 00:14:41,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:41,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:14:41,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:41,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:14:41,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:14:41,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 00:14:41,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:41,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:41,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 00:14:41,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:42,176 INFO L124 PetriNetUnfolderBase]: 984/1519 cut-off events. [2024-06-28 00:14:42,177 INFO L125 PetriNetUnfolderBase]: For 287/290 co-relation queries the response was YES. [2024-06-28 00:14:42,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3528 conditions, 1519 events. 984/1519 cut-off events. For 287/290 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6992 event pairs, 540 based on Foata normal form. 5/1522 useless extension candidates. Maximal degree in co-relation 3516. Up to 1475 conditions per place. [2024-06-28 00:14:42,185 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 43 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-28 00:14:42,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 254 flow [2024-06-28 00:14:42,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:14:42,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:14:42,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-06-28 00:14:42,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5426829268292683 [2024-06-28 00:14:42,187 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 89 transitions. [2024-06-28 00:14:42,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 254 flow [2024-06-28 00:14:42,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:14:42,189 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 136 flow [2024-06-28 00:14:42,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-28 00:14:42,190 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-28 00:14:42,190 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 136 flow [2024-06-28 00:14:42,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:42,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:42,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:42,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:14:42,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:42,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:42,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1394667015, now seen corresponding path program 1 times [2024-06-28 00:14:42,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:42,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417903922] [2024-06-28 00:14:42,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:42,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:45,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:45,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417903922] [2024-06-28 00:14:45,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417903922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:45,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:45,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:14:45,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838298154] [2024-06-28 00:14:45,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:45,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:14:45,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:45,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:14:45,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:14:45,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:14:45,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:45,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:45,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:14:45,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:46,326 INFO L124 PetriNetUnfolderBase]: 1183/1810 cut-off events. [2024-06-28 00:14:46,326 INFO L125 PetriNetUnfolderBase]: For 937/937 co-relation queries the response was YES. [2024-06-28 00:14:46,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 1810 events. 1183/1810 cut-off events. For 937/937 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8236 event pairs, 510 based on Foata normal form. 3/1812 useless extension candidates. Maximal degree in co-relation 4659. Up to 1748 conditions per place. [2024-06-28 00:14:46,337 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 59 selfloop transitions, 10 changer transitions 0/74 dead transitions. [2024-06-28 00:14:46,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 74 transitions, 379 flow [2024-06-28 00:14:46,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:14:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:14:46,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-28 00:14:46,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170731707317073 [2024-06-28 00:14:46,342 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 136 flow. Second operand 5 states and 106 transitions. [2024-06-28 00:14:46,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 74 transitions, 379 flow [2024-06-28 00:14:46,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 74 transitions, 358 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 00:14:46,346 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 206 flow [2024-06-28 00:14:46,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2024-06-28 00:14:46,347 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-06-28 00:14:46,347 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 206 flow [2024-06-28 00:14:46,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:46,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:46,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:46,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:14:46,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:46,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:46,348 INFO L85 PathProgramCache]: Analyzing trace with hash -613043622, now seen corresponding path program 1 times [2024-06-28 00:14:46,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:46,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389943828] [2024-06-28 00:14:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:46,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:49,445 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 00:14:49,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:49,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389943828] [2024-06-28 00:14:49,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389943828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:49,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:49,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:14:49,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113973282] [2024-06-28 00:14:49,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:49,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:14:49,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:49,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:14:49,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:14:49,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:14:49,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:49,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:49,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:14:49,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:50,434 INFO L124 PetriNetUnfolderBase]: 1174/1795 cut-off events. [2024-06-28 00:14:50,434 INFO L125 PetriNetUnfolderBase]: For 1619/1619 co-relation queries the response was YES. [2024-06-28 00:14:50,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5131 conditions, 1795 events. 1174/1795 cut-off events. For 1619/1619 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8144 event pairs, 365 based on Foata normal form. 6/1800 useless extension candidates. Maximal degree in co-relation 5114. Up to 1695 conditions per place. [2024-06-28 00:14:50,443 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 64 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2024-06-28 00:14:50,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 81 transitions, 442 flow [2024-06-28 00:14:50,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:14:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:14:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 00:14:50,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491869918699187 [2024-06-28 00:14:50,446 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 206 flow. Second operand 6 states and 121 transitions. [2024-06-28 00:14:50,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 81 transitions, 442 flow [2024-06-28 00:14:50,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 81 transitions, 438 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 00:14:50,452 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 241 flow [2024-06-28 00:14:50,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-28 00:14:50,453 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2024-06-28 00:14:50,453 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 241 flow [2024-06-28 00:14:50,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:50,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:50,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:50,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:14:50,455 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:50,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:50,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1963052644, now seen corresponding path program 1 times [2024-06-28 00:14:50,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:50,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682521351] [2024-06-28 00:14:50,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:50,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:53,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:53,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682521351] [2024-06-28 00:14:53,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682521351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:53,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:53,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:14:53,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042896937] [2024-06-28 00:14:53,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:53,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:14:53,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:53,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:14:53,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:14:53,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:14:53,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:53,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:53,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:14:53,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:54,221 INFO L124 PetriNetUnfolderBase]: 1183/1821 cut-off events. [2024-06-28 00:14:54,222 INFO L125 PetriNetUnfolderBase]: For 2988/2991 co-relation queries the response was YES. [2024-06-28 00:14:54,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5543 conditions, 1821 events. 1183/1821 cut-off events. For 2988/2991 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8570 event pairs, 665 based on Foata normal form. 6/1823 useless extension candidates. Maximal degree in co-relation 5522. Up to 1683 conditions per place. [2024-06-28 00:14:54,233 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 58 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2024-06-28 00:14:54,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 78 transitions, 509 flow [2024-06-28 00:14:54,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:14:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:14:54,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-28 00:14:54,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-28 00:14:54,237 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 241 flow. Second operand 5 states and 94 transitions. [2024-06-28 00:14:54,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 78 transitions, 509 flow [2024-06-28 00:14:54,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 78 transitions, 478 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 00:14:54,244 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 333 flow [2024-06-28 00:14:54,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=333, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2024-06-28 00:14:54,247 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-06-28 00:14:54,247 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 333 flow [2024-06-28 00:14:54,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:54,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:54,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:54,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:14:54,248 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:54,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:54,248 INFO L85 PathProgramCache]: Analyzing trace with hash -716150490, now seen corresponding path program 1 times [2024-06-28 00:14:54,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:54,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482697814] [2024-06-28 00:14:54,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:54,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:58,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:58,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:58,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482697814] [2024-06-28 00:14:58,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482697814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:58,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:58,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:14:58,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490134881] [2024-06-28 00:14:58,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:58,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:14:58,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:58,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:14:58,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:14:58,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:14:58,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:58,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:58,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:14:58,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:59,199 INFO L124 PetriNetUnfolderBase]: 1199/1843 cut-off events. [2024-06-28 00:14:59,199 INFO L125 PetriNetUnfolderBase]: For 4159/4165 co-relation queries the response was YES. [2024-06-28 00:14:59,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6501 conditions, 1843 events. 1199/1843 cut-off events. For 4159/4165 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8657 event pairs, 672 based on Foata normal form. 9/1849 useless extension candidates. Maximal degree in co-relation 6475. Up to 1700 conditions per place. [2024-06-28 00:14:59,211 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 60 selfloop transitions, 18 changer transitions 0/82 dead transitions. [2024-06-28 00:14:59,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 82 transitions, 584 flow [2024-06-28 00:14:59,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:14:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:14:59,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-28 00:14:59,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-28 00:14:59,213 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 333 flow. Second operand 5 states and 94 transitions. [2024-06-28 00:14:59,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 82 transitions, 584 flow [2024-06-28 00:14:59,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 82 transitions, 578 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-28 00:14:59,220 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 409 flow [2024-06-28 00:14:59,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=409, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-06-28 00:14:59,223 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-06-28 00:14:59,223 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 409 flow [2024-06-28 00:14:59,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:59,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:59,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:59,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:14:59,224 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:59,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:59,224 INFO L85 PathProgramCache]: Analyzing trace with hash 158147449, now seen corresponding path program 1 times [2024-06-28 00:14:59,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:59,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627589215] [2024-06-28 00:14:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:59,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:04,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:04,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:04,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627589215] [2024-06-28 00:15:04,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627589215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:04,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:04,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:15:04,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314329033] [2024-06-28 00:15:04,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:04,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:15:04,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:04,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:15:04,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:15:04,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:15:04,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 409 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:04,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:04,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:15:04,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:05,193 INFO L124 PetriNetUnfolderBase]: 1212/1858 cut-off events. [2024-06-28 00:15:05,194 INFO L125 PetriNetUnfolderBase]: For 4866/4874 co-relation queries the response was YES. [2024-06-28 00:15:05,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6972 conditions, 1858 events. 1212/1858 cut-off events. For 4866/4874 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8518 event pairs, 435 based on Foata normal form. 10/1867 useless extension candidates. Maximal degree in co-relation 6941. Up to 1777 conditions per place. [2024-06-28 00:15:05,203 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 79 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2024-06-28 00:15:05,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 97 transitions, 701 flow [2024-06-28 00:15:05,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:15:05,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:15:05,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 00:15:05,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46747967479674796 [2024-06-28 00:15:05,206 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 409 flow. Second operand 6 states and 115 transitions. [2024-06-28 00:15:05,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 97 transitions, 701 flow [2024-06-28 00:15:05,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 680 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 00:15:05,210 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 456 flow [2024-06-28 00:15:05,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=456, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-06-28 00:15:05,211 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-28 00:15:05,211 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 456 flow [2024-06-28 00:15:05,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:05,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:05,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:05,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:15:05,212 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:05,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:05,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1698537405, now seen corresponding path program 1 times [2024-06-28 00:15:05,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:05,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188893561] [2024-06-28 00:15:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:05,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:07,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:07,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:07,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188893561] [2024-06-28 00:15:07,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188893561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:07,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:07,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:15:07,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136717878] [2024-06-28 00:15:07,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:07,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:15:07,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:07,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:15:07,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:15:07,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:15:07,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 456 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:07,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:07,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:15:07,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:09,212 INFO L124 PetriNetUnfolderBase]: 1321/2020 cut-off events. [2024-06-28 00:15:09,212 INFO L125 PetriNetUnfolderBase]: For 7732/7753 co-relation queries the response was YES. [2024-06-28 00:15:09,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7924 conditions, 2020 events. 1321/2020 cut-off events. For 7732/7753 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9481 event pairs, 556 based on Foata normal form. 13/2029 useless extension candidates. Maximal degree in co-relation 7892. Up to 1746 conditions per place. [2024-06-28 00:15:09,233 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 63 selfloop transitions, 34 changer transitions 0/101 dead transitions. [2024-06-28 00:15:09,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 101 transitions, 824 flow [2024-06-28 00:15:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:15:09,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:15:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 00:15:09,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42160278745644597 [2024-06-28 00:15:09,236 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 456 flow. Second operand 7 states and 121 transitions. [2024-06-28 00:15:09,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 101 transitions, 824 flow [2024-06-28 00:15:09,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 101 transitions, 778 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 00:15:09,242 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 605 flow [2024-06-28 00:15:09,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=605, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2024-06-28 00:15:09,243 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-06-28 00:15:09,244 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 605 flow [2024-06-28 00:15:09,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:09,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:09,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:09,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:15:09,244 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:09,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:09,245 INFO L85 PathProgramCache]: Analyzing trace with hash -922182195, now seen corresponding path program 2 times [2024-06-28 00:15:09,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:09,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331689969] [2024-06-28 00:15:09,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:09,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:12,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:12,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331689969] [2024-06-28 00:15:12,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331689969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:12,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:12,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:15:12,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427607061] [2024-06-28 00:15:12,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:12,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:15:12,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:12,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:15:12,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:15:12,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:15:12,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 605 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:12,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:12,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:15:12,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:13,453 INFO L124 PetriNetUnfolderBase]: 1330/2042 cut-off events. [2024-06-28 00:15:13,454 INFO L125 PetriNetUnfolderBase]: For 10110/10149 co-relation queries the response was YES. [2024-06-28 00:15:13,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8910 conditions, 2042 events. 1330/2042 cut-off events. For 10110/10149 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9609 event pairs, 570 based on Foata normal form. 54/2092 useless extension candidates. Maximal degree in co-relation 8874. Up to 1699 conditions per place. [2024-06-28 00:15:13,466 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 76 selfloop transitions, 32 changer transitions 0/112 dead transitions. [2024-06-28 00:15:13,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 112 transitions, 992 flow [2024-06-28 00:15:13,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:15:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:15:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 00:15:13,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4355400696864111 [2024-06-28 00:15:13,468 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 605 flow. Second operand 7 states and 125 transitions. [2024-06-28 00:15:13,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 112 transitions, 992 flow [2024-06-28 00:15:13,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 112 transitions, 970 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-28 00:15:13,477 INFO L231 Difference]: Finished difference. Result has 79 places, 83 transitions, 734 flow [2024-06-28 00:15:13,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=734, PETRI_PLACES=79, PETRI_TRANSITIONS=83} [2024-06-28 00:15:13,479 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2024-06-28 00:15:13,479 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 83 transitions, 734 flow [2024-06-28 00:15:13,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:13,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:13,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:13,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:15:13,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:13,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:13,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1933633247, now seen corresponding path program 2 times [2024-06-28 00:15:13,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:13,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691825584] [2024-06-28 00:15:13,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:13,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:16,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:16,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691825584] [2024-06-28 00:15:16,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691825584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:16,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:16,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:15:16,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863564987] [2024-06-28 00:15:16,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:16,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:15:16,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:16,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:15:16,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:15:16,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:15:16,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 83 transitions, 734 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:16,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:16,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:15:16,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:18,297 INFO L124 PetriNetUnfolderBase]: 1387/2125 cut-off events. [2024-06-28 00:15:18,297 INFO L125 PetriNetUnfolderBase]: For 13603/13643 co-relation queries the response was YES. [2024-06-28 00:15:18,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10285 conditions, 2125 events. 1387/2125 cut-off events. For 13603/13643 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10039 event pairs, 600 based on Foata normal form. 32/2153 useless extension candidates. Maximal degree in co-relation 10245. Up to 1747 conditions per place. [2024-06-28 00:15:18,312 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 80 selfloop transitions, 41 changer transitions 0/125 dead transitions. [2024-06-28 00:15:18,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 125 transitions, 1253 flow [2024-06-28 00:15:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:15:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:15:18,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 00:15:18,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-28 00:15:18,314 INFO L175 Difference]: Start difference. First operand has 79 places, 83 transitions, 734 flow. Second operand 6 states and 116 transitions. [2024-06-28 00:15:18,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 125 transitions, 1253 flow [2024-06-28 00:15:18,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 125 transitions, 1190 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:15:18,325 INFO L231 Difference]: Finished difference. Result has 81 places, 98 transitions, 942 flow [2024-06-28 00:15:18,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=942, PETRI_PLACES=81, PETRI_TRANSITIONS=98} [2024-06-28 00:15:18,325 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2024-06-28 00:15:18,326 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 98 transitions, 942 flow [2024-06-28 00:15:18,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:18,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:18,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:18,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:15:18,327 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:18,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:18,327 INFO L85 PathProgramCache]: Analyzing trace with hash -725826649, now seen corresponding path program 1 times [2024-06-28 00:15:18,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:18,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580887727] [2024-06-28 00:15:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:18,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:22,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:22,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580887727] [2024-06-28 00:15:22,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580887727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:22,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:22,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:15:22,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979420843] [2024-06-28 00:15:22,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:22,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:15:22,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:22,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:15:22,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:15:22,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:15:22,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 98 transitions, 942 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:22,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:22,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:15:22,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:23,942 INFO L124 PetriNetUnfolderBase]: 1423/2178 cut-off events. [2024-06-28 00:15:23,948 INFO L125 PetriNetUnfolderBase]: For 17034/17046 co-relation queries the response was YES. [2024-06-28 00:15:23,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11139 conditions, 2178 events. 1423/2178 cut-off events. For 17034/17046 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10313 event pairs, 646 based on Foata normal form. 24/2200 useless extension candidates. Maximal degree in co-relation 11096. Up to 1972 conditions per place. [2024-06-28 00:15:23,979 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 105 selfloop transitions, 20 changer transitions 0/129 dead transitions. [2024-06-28 00:15:23,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 129 transitions, 1330 flow [2024-06-28 00:15:23,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:15:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:15:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 00:15:23,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181184668989547 [2024-06-28 00:15:23,982 INFO L175 Difference]: Start difference. First operand has 81 places, 98 transitions, 942 flow. Second operand 7 states and 120 transitions. [2024-06-28 00:15:23,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 129 transitions, 1330 flow [2024-06-28 00:15:24,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 129 transitions, 1302 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 00:15:24,006 INFO L231 Difference]: Finished difference. Result has 87 places, 100 transitions, 995 flow [2024-06-28 00:15:24,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=995, PETRI_PLACES=87, PETRI_TRANSITIONS=100} [2024-06-28 00:15:24,007 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-06-28 00:15:24,007 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 100 transitions, 995 flow [2024-06-28 00:15:24,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:24,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:24,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:24,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:15:24,008 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:24,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:24,008 INFO L85 PathProgramCache]: Analyzing trace with hash 607605622, now seen corresponding path program 1 times [2024-06-28 00:15:24,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:24,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949324787] [2024-06-28 00:15:24,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:24,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:29,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:29,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949324787] [2024-06-28 00:15:29,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949324787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:29,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:29,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:15:29,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972299237] [2024-06-28 00:15:29,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:29,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:15:29,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:29,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:15:29,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:15:29,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:15:29,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 100 transitions, 995 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:29,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:29,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:15:29,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:30,484 INFO L124 PetriNetUnfolderBase]: 1541/2367 cut-off events. [2024-06-28 00:15:30,485 INFO L125 PetriNetUnfolderBase]: For 18988/18998 co-relation queries the response was YES. [2024-06-28 00:15:30,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12256 conditions, 2367 events. 1541/2367 cut-off events. For 18988/18998 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11422 event pairs, 525 based on Foata normal form. 18/2384 useless extension candidates. Maximal degree in co-relation 12210. Up to 2124 conditions per place. [2024-06-28 00:15:30,503 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 124 selfloop transitions, 33 changer transitions 0/161 dead transitions. [2024-06-28 00:15:30,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 161 transitions, 1645 flow [2024-06-28 00:15:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:15:30,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:15:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 00:15:30,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44173441734417346 [2024-06-28 00:15:30,505 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 995 flow. Second operand 9 states and 163 transitions. [2024-06-28 00:15:30,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 161 transitions, 1645 flow [2024-06-28 00:15:30,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 161 transitions, 1590 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 00:15:30,526 INFO L231 Difference]: Finished difference. Result has 94 places, 116 transitions, 1215 flow [2024-06-28 00:15:30,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1215, PETRI_PLACES=94, PETRI_TRANSITIONS=116} [2024-06-28 00:15:30,527 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2024-06-28 00:15:30,527 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 116 transitions, 1215 flow [2024-06-28 00:15:30,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:30,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:30,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:30,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:15:30,528 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:30,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:30,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1024875302, now seen corresponding path program 2 times [2024-06-28 00:15:30,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:30,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859461426] [2024-06-28 00:15:30,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:30,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:35,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:35,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:35,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859461426] [2024-06-28 00:15:35,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859461426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:35,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:35,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:15:35,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882118969] [2024-06-28 00:15:35,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:35,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:15:35,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:35,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:15:35,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:15:35,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:15:35,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 116 transitions, 1215 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:35,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:35,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:15:35,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:37,061 INFO L124 PetriNetUnfolderBase]: 1651/2533 cut-off events. [2024-06-28 00:15:37,061 INFO L125 PetriNetUnfolderBase]: For 25007/25050 co-relation queries the response was YES. [2024-06-28 00:15:37,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13875 conditions, 2533 events. 1651/2533 cut-off events. For 25007/25050 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12384 event pairs, 586 based on Foata normal form. 35/2564 useless extension candidates. Maximal degree in co-relation 13827. Up to 1843 conditions per place. [2024-06-28 00:15:37,083 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 115 selfloop transitions, 67 changer transitions 0/186 dead transitions. [2024-06-28 00:15:37,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 186 transitions, 2085 flow [2024-06-28 00:15:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:15:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:15:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 00:15:37,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44634146341463415 [2024-06-28 00:15:37,086 INFO L175 Difference]: Start difference. First operand has 94 places, 116 transitions, 1215 flow. Second operand 10 states and 183 transitions. [2024-06-28 00:15:37,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 186 transitions, 2085 flow [2024-06-28 00:15:37,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 186 transitions, 1979 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 00:15:37,117 INFO L231 Difference]: Finished difference. Result has 102 places, 132 transitions, 1495 flow [2024-06-28 00:15:37,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1495, PETRI_PLACES=102, PETRI_TRANSITIONS=132} [2024-06-28 00:15:37,118 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2024-06-28 00:15:37,118 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 132 transitions, 1495 flow [2024-06-28 00:15:37,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:37,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:37,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:37,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:15:37,119 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:37,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:37,119 INFO L85 PathProgramCache]: Analyzing trace with hash -79231318, now seen corresponding path program 1 times [2024-06-28 00:15:37,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:37,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020332478] [2024-06-28 00:15:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:37,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:42,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:42,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020332478] [2024-06-28 00:15:42,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020332478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:42,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:42,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:15:42,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587157861] [2024-06-28 00:15:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:42,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:15:42,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:42,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:15:42,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:15:42,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:15:42,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 132 transitions, 1495 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:42,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:42,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:15:42,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:43,915 INFO L124 PetriNetUnfolderBase]: 1671/2558 cut-off events. [2024-06-28 00:15:43,916 INFO L125 PetriNetUnfolderBase]: For 29777/29787 co-relation queries the response was YES. [2024-06-28 00:15:43,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14989 conditions, 2558 events. 1671/2558 cut-off events. For 29777/29787 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12418 event pairs, 444 based on Foata normal form. 14/2571 useless extension candidates. Maximal degree in co-relation 14937. Up to 2363 conditions per place. [2024-06-28 00:15:43,939 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 149 selfloop transitions, 18 changer transitions 0/171 dead transitions. [2024-06-28 00:15:43,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 171 transitions, 1967 flow [2024-06-28 00:15:43,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:15:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:15:43,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 00:15:43,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529616724738676 [2024-06-28 00:15:43,942 INFO L175 Difference]: Start difference. First operand has 102 places, 132 transitions, 1495 flow. Second operand 7 states and 130 transitions. [2024-06-28 00:15:43,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 171 transitions, 1967 flow [2024-06-28 00:15:43,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 171 transitions, 1809 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-28 00:15:43,989 INFO L231 Difference]: Finished difference. Result has 104 places, 134 transitions, 1430 flow [2024-06-28 00:15:43,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1430, PETRI_PLACES=104, PETRI_TRANSITIONS=134} [2024-06-28 00:15:43,990 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2024-06-28 00:15:43,990 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 134 transitions, 1430 flow [2024-06-28 00:15:43,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:43,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:43,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:43,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:15:43,991 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:43,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:43,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1655902168, now seen corresponding path program 2 times [2024-06-28 00:15:43,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:43,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341150663] [2024-06-28 00:15:43,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:43,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:49,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:49,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341150663] [2024-06-28 00:15:49,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341150663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:49,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:49,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:15:49,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302888770] [2024-06-28 00:15:49,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:49,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:15:49,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:49,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:15:49,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:15:49,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:15:49,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 134 transitions, 1430 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:49,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:49,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:15:49,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:50,432 INFO L124 PetriNetUnfolderBase]: 1691/2582 cut-off events. [2024-06-28 00:15:50,432 INFO L125 PetriNetUnfolderBase]: For 30447/30457 co-relation queries the response was YES. [2024-06-28 00:15:50,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15123 conditions, 2582 events. 1691/2582 cut-off events. For 30447/30457 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12504 event pairs, 567 based on Foata normal form. 14/2595 useless extension candidates. Maximal degree in co-relation 15071. Up to 2430 conditions per place. [2024-06-28 00:15:50,450 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 149 selfloop transitions, 19 changer transitions 0/172 dead transitions. [2024-06-28 00:15:50,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 172 transitions, 1906 flow [2024-06-28 00:15:50,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:15:50,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:15:50,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 00:15:50,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529616724738676 [2024-06-28 00:15:50,453 INFO L175 Difference]: Start difference. First operand has 104 places, 134 transitions, 1430 flow. Second operand 7 states and 130 transitions. [2024-06-28 00:15:50,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 172 transitions, 1906 flow [2024-06-28 00:15:50,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 172 transitions, 1831 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 00:15:50,490 INFO L231 Difference]: Finished difference. Result has 106 places, 136 transitions, 1454 flow [2024-06-28 00:15:50,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1454, PETRI_PLACES=106, PETRI_TRANSITIONS=136} [2024-06-28 00:15:50,491 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 64 predicate places. [2024-06-28 00:15:50,491 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 136 transitions, 1454 flow [2024-06-28 00:15:50,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:50,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:50,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:50,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:15:50,491 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:50,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:50,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1966806958, now seen corresponding path program 3 times [2024-06-28 00:15:50,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:50,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168765231] [2024-06-28 00:15:50,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:50,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:53,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:53,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168765231] [2024-06-28 00:15:53,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168765231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:53,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:53,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:15:53,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116024330] [2024-06-28 00:15:53,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:53,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:15:53,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:53,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:15:53,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:15:53,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:15:53,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 136 transitions, 1454 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:53,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:53,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:15:53,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:55,251 INFO L124 PetriNetUnfolderBase]: 2005/3103 cut-off events. [2024-06-28 00:15:55,252 INFO L125 PetriNetUnfolderBase]: For 48545/48588 co-relation queries the response was YES. [2024-06-28 00:15:55,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17481 conditions, 3103 events. 2005/3103 cut-off events. For 48545/48588 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 16109 event pairs, 632 based on Foata normal form. 115/3214 useless extension candidates. Maximal degree in co-relation 17428. Up to 2103 conditions per place. [2024-06-28 00:15:55,272 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 127 selfloop transitions, 34 changer transitions 19/184 dead transitions. [2024-06-28 00:15:55,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 184 transitions, 2098 flow [2024-06-28 00:15:55,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:15:55,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:15:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 00:15:55,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-28 00:15:55,275 INFO L175 Difference]: Start difference. First operand has 106 places, 136 transitions, 1454 flow. Second operand 8 states and 148 transitions. [2024-06-28 00:15:55,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 184 transitions, 2098 flow [2024-06-28 00:15:55,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 184 transitions, 2015 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 00:15:55,316 INFO L231 Difference]: Finished difference. Result has 109 places, 127 transitions, 1332 flow [2024-06-28 00:15:55,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1332, PETRI_PLACES=109, PETRI_TRANSITIONS=127} [2024-06-28 00:15:55,316 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2024-06-28 00:15:55,316 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 127 transitions, 1332 flow [2024-06-28 00:15:55,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:55,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:55,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:55,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:15:55,317 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:55,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:55,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1453582682, now seen corresponding path program 1 times [2024-06-28 00:15:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:55,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041265549] [2024-06-28 00:15:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:55,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:59,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:59,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041265549] [2024-06-28 00:15:59,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041265549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:59,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:59,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:15:59,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579185112] [2024-06-28 00:15:59,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:59,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:15:59,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:59,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:15:59,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:59,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:15:59,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 127 transitions, 1332 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:59,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:59,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:15:59,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:01,377 INFO L124 PetriNetUnfolderBase]: 1700/2634 cut-off events. [2024-06-28 00:16:01,377 INFO L125 PetriNetUnfolderBase]: For 36064/36095 co-relation queries the response was YES. [2024-06-28 00:16:01,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15015 conditions, 2634 events. 1700/2634 cut-off events. For 36064/36095 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 13126 event pairs, 538 based on Foata normal form. 38/2668 useless extension candidates. Maximal degree in co-relation 14960. Up to 2230 conditions per place. [2024-06-28 00:16:01,398 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 114 selfloop transitions, 46 changer transitions 0/164 dead transitions. [2024-06-28 00:16:01,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 164 transitions, 1892 flow [2024-06-28 00:16:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:16:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:16:01,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 00:16:01,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2024-06-28 00:16:01,404 INFO L175 Difference]: Start difference. First operand has 109 places, 127 transitions, 1332 flow. Second operand 8 states and 135 transitions. [2024-06-28 00:16:01,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 164 transitions, 1892 flow [2024-06-28 00:16:01,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 164 transitions, 1792 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:16:01,454 INFO L231 Difference]: Finished difference. Result has 110 places, 137 transitions, 1502 flow [2024-06-28 00:16:01,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1502, PETRI_PLACES=110, PETRI_TRANSITIONS=137} [2024-06-28 00:16:01,455 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-06-28 00:16:01,455 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 137 transitions, 1502 flow [2024-06-28 00:16:01,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:01,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:01,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:01,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:16:01,456 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:01,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1499584432, now seen corresponding path program 2 times [2024-06-28 00:16:01,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:01,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341858194] [2024-06-28 00:16:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:01,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:08,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:08,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341858194] [2024-06-28 00:16:08,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341858194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:08,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:08,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:08,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551311337] [2024-06-28 00:16:08,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:08,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:08,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:08,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:08,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:08,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:16:08,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 137 transitions, 1502 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:08,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:08,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:16:08,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:09,816 INFO L124 PetriNetUnfolderBase]: 1790/2774 cut-off events. [2024-06-28 00:16:09,816 INFO L125 PetriNetUnfolderBase]: For 40309/40340 co-relation queries the response was YES. [2024-06-28 00:16:09,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16335 conditions, 2774 events. 1790/2774 cut-off events. For 40309/40340 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14029 event pairs, 600 based on Foata normal form. 38/2808 useless extension candidates. Maximal degree in co-relation 16280. Up to 2287 conditions per place. [2024-06-28 00:16:09,833 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 122 selfloop transitions, 57 changer transitions 0/183 dead transitions. [2024-06-28 00:16:09,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 183 transitions, 2188 flow [2024-06-28 00:16:09,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:16:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:16:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 00:16:09,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597560975609756 [2024-06-28 00:16:09,836 INFO L175 Difference]: Start difference. First operand has 110 places, 137 transitions, 1502 flow. Second operand 8 states and 143 transitions. [2024-06-28 00:16:09,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 183 transitions, 2188 flow [2024-06-28 00:16:09,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 183 transitions, 2109 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 00:16:09,881 INFO L231 Difference]: Finished difference. Result has 114 places, 149 transitions, 1684 flow [2024-06-28 00:16:09,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1684, PETRI_PLACES=114, PETRI_TRANSITIONS=149} [2024-06-28 00:16:09,883 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2024-06-28 00:16:09,883 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 149 transitions, 1684 flow [2024-06-28 00:16:09,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:09,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:09,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:09,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:16:09,884 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:09,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:09,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1734651674, now seen corresponding path program 3 times [2024-06-28 00:16:09,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:09,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445903186] [2024-06-28 00:16:09,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:09,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:16,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:16,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445903186] [2024-06-28 00:16:16,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445903186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:16,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:16,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:16,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031534626] [2024-06-28 00:16:16,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:16,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:16,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:16,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:16,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:16,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:16:16,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 149 transitions, 1684 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:16,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:16,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:16:16,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:17,801 INFO L124 PetriNetUnfolderBase]: 1918/2976 cut-off events. [2024-06-28 00:16:17,801 INFO L125 PetriNetUnfolderBase]: For 46030/46061 co-relation queries the response was YES. [2024-06-28 00:16:17,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17782 conditions, 2976 events. 1918/2976 cut-off events. For 46030/46061 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15286 event pairs, 572 based on Foata normal form. 38/3010 useless extension candidates. Maximal degree in co-relation 17726. Up to 2090 conditions per place. [2024-06-28 00:16:17,831 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 129 selfloop transitions, 61 changer transitions 0/194 dead transitions. [2024-06-28 00:16:17,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 194 transitions, 2422 flow [2024-06-28 00:16:17,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:16:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:16:17,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 00:16:17,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-28 00:16:17,833 INFO L175 Difference]: Start difference. First operand has 114 places, 149 transitions, 1684 flow. Second operand 8 states and 147 transitions. [2024-06-28 00:16:17,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 194 transitions, 2422 flow [2024-06-28 00:16:17,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 194 transitions, 2372 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-28 00:16:17,908 INFO L231 Difference]: Finished difference. Result has 121 places, 155 transitions, 1888 flow [2024-06-28 00:16:17,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1888, PETRI_PLACES=121, PETRI_TRANSITIONS=155} [2024-06-28 00:16:17,909 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2024-06-28 00:16:17,909 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 155 transitions, 1888 flow [2024-06-28 00:16:17,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:17,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:17,909 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 00:16:17,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:16:17,910 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:17,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:17,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1838798437, now seen corresponding path program 1 times [2024-06-28 00:16:17,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:17,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140047297] [2024-06-28 00:16:17,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:17,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:23,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:23,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140047297] [2024-06-28 00:16:23,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140047297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:23,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:23,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:23,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957355333] [2024-06-28 00:16:23,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:23,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:23,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:23,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:23,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:23,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:16:23,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 155 transitions, 1888 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:23,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:23,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:16:23,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:25,173 INFO L124 PetriNetUnfolderBase]: 2430/3799 cut-off events. [2024-06-28 00:16:25,173 INFO L125 PetriNetUnfolderBase]: For 72328/72338 co-relation queries the response was YES. [2024-06-28 00:16:25,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23333 conditions, 3799 events. 2430/3799 cut-off events. For 72328/72338 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 20542 event pairs, 613 based on Foata normal form. 66/3864 useless extension candidates. Maximal degree in co-relation 23274. Up to 2624 conditions per place. [2024-06-28 00:16:25,205 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 192 selfloop transitions, 30 changer transitions 0/226 dead transitions. [2024-06-28 00:16:25,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 226 transitions, 2818 flow [2024-06-28 00:16:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:16:25,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:16:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 00:16:25,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-28 00:16:25,206 INFO L175 Difference]: Start difference. First operand has 121 places, 155 transitions, 1888 flow. Second operand 10 states and 189 transitions. [2024-06-28 00:16:25,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 226 transitions, 2818 flow [2024-06-28 00:16:25,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 226 transitions, 2712 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 00:16:25,300 INFO L231 Difference]: Finished difference. Result has 129 places, 158 transitions, 1950 flow [2024-06-28 00:16:25,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1950, PETRI_PLACES=129, PETRI_TRANSITIONS=158} [2024-06-28 00:16:25,300 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 87 predicate places. [2024-06-28 00:16:25,300 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 158 transitions, 1950 flow [2024-06-28 00:16:25,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:25,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:25,301 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 00:16:25,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:16:25,301 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:25,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:25,302 INFO L85 PathProgramCache]: Analyzing trace with hash -206490475, now seen corresponding path program 2 times [2024-06-28 00:16:25,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:25,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777160172] [2024-06-28 00:16:25,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:25,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:30,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:30,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777160172] [2024-06-28 00:16:30,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777160172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:30,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:30,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:30,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059174889] [2024-06-28 00:16:30,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:30,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:30,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:30,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:30,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:30,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:16:30,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 158 transitions, 1950 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:30,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:30,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:16:30,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:32,324 INFO L124 PetriNetUnfolderBase]: 2706/4281 cut-off events. [2024-06-28 00:16:32,325 INFO L125 PetriNetUnfolderBase]: For 86664/86674 co-relation queries the response was YES. [2024-06-28 00:16:32,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25854 conditions, 4281 events. 2706/4281 cut-off events. For 86664/86674 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 24163 event pairs, 1084 based on Foata normal form. 74/4354 useless extension candidates. Maximal degree in co-relation 25792. Up to 3537 conditions per place. [2024-06-28 00:16:32,366 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 179 selfloop transitions, 34 changer transitions 0/217 dead transitions. [2024-06-28 00:16:32,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 217 transitions, 2718 flow [2024-06-28 00:16:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:16:32,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:16:32,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 00:16:32,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44878048780487806 [2024-06-28 00:16:32,395 INFO L175 Difference]: Start difference. First operand has 129 places, 158 transitions, 1950 flow. Second operand 10 states and 184 transitions. [2024-06-28 00:16:32,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 217 transitions, 2718 flow [2024-06-28 00:16:32,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 217 transitions, 2648 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 00:16:32,478 INFO L231 Difference]: Finished difference. Result has 133 places, 159 transitions, 1996 flow [2024-06-28 00:16:32,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1880, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1996, PETRI_PLACES=133, PETRI_TRANSITIONS=159} [2024-06-28 00:16:32,479 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 91 predicate places. [2024-06-28 00:16:32,479 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 159 transitions, 1996 flow [2024-06-28 00:16:32,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:32,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:32,479 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 00:16:32,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:16:32,480 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:32,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:32,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1071859553, now seen corresponding path program 3 times [2024-06-28 00:16:32,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:32,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218548246] [2024-06-28 00:16:32,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:32,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:36,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:36,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218548246] [2024-06-28 00:16:36,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218548246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:36,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:36,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:36,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905966676] [2024-06-28 00:16:36,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:36,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:36,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:36,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:36,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:36,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:16:36,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 159 transitions, 1996 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:36,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:36,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:16:36,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:38,506 INFO L124 PetriNetUnfolderBase]: 3231/5152 cut-off events. [2024-06-28 00:16:38,507 INFO L125 PetriNetUnfolderBase]: For 103916/103926 co-relation queries the response was YES. [2024-06-28 00:16:38,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30989 conditions, 5152 events. 3231/5152 cut-off events. For 103916/103926 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 30677 event pairs, 1124 based on Foata normal form. 66/5217 useless extension candidates. Maximal degree in co-relation 30926. Up to 3446 conditions per place. [2024-06-28 00:16:38,550 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 189 selfloop transitions, 33 changer transitions 0/226 dead transitions. [2024-06-28 00:16:38,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 226 transitions, 2902 flow [2024-06-28 00:16:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:16:38,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:16:38,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 00:16:38,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-28 00:16:38,552 INFO L175 Difference]: Start difference. First operand has 133 places, 159 transitions, 1996 flow. Second operand 10 states and 189 transitions. [2024-06-28 00:16:38,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 226 transitions, 2902 flow [2024-06-28 00:16:38,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 226 transitions, 2814 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:16:38,674 INFO L231 Difference]: Finished difference. Result has 136 places, 161 transitions, 2059 flow [2024-06-28 00:16:38,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2059, PETRI_PLACES=136, PETRI_TRANSITIONS=161} [2024-06-28 00:16:38,675 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 94 predicate places. [2024-06-28 00:16:38,675 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 161 transitions, 2059 flow [2024-06-28 00:16:38,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:38,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:38,675 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 00:16:38,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:16:38,676 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:38,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:38,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2120134713, now seen corresponding path program 1 times [2024-06-28 00:16:38,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:38,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364974943] [2024-06-28 00:16:38,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:38,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:43,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:43,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:43,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364974943] [2024-06-28 00:16:43,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364974943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:43,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:43,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:43,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721147198] [2024-06-28 00:16:43,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:43,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:43,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:43,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:43,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:43,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:16:43,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 161 transitions, 2059 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:43,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:43,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:16:43,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:45,868 INFO L124 PetriNetUnfolderBase]: 3387/5465 cut-off events. [2024-06-28 00:16:45,869 INFO L125 PetriNetUnfolderBase]: For 115808/115839 co-relation queries the response was YES. [2024-06-28 00:16:45,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32438 conditions, 5465 events. 3387/5465 cut-off events. For 115808/115839 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 33623 event pairs, 1541 based on Foata normal form. 70/5531 useless extension candidates. Maximal degree in co-relation 32373. Up to 4684 conditions per place. [2024-06-28 00:16:45,935 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 150 selfloop transitions, 51 changer transitions 6/211 dead transitions. [2024-06-28 00:16:45,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 211 transitions, 2734 flow [2024-06-28 00:16:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:16:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:16:45,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 00:16:45,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 00:16:45,937 INFO L175 Difference]: Start difference. First operand has 136 places, 161 transitions, 2059 flow. Second operand 10 states and 175 transitions. [2024-06-28 00:16:45,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 211 transitions, 2734 flow [2024-06-28 00:16:46,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 211 transitions, 2645 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 00:16:46,118 INFO L231 Difference]: Finished difference. Result has 139 places, 161 transitions, 2099 flow [2024-06-28 00:16:46,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1972, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2099, PETRI_PLACES=139, PETRI_TRANSITIONS=161} [2024-06-28 00:16:46,119 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 97 predicate places. [2024-06-28 00:16:46,119 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 161 transitions, 2099 flow [2024-06-28 00:16:46,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:46,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:46,120 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 00:16:46,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:16:46,120 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:46,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:46,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1794462285, now seen corresponding path program 4 times [2024-06-28 00:16:46,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:46,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775452400] [2024-06-28 00:16:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:46,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:51,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:51,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775452400] [2024-06-28 00:16:51,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775452400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:51,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:51,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:51,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555687464] [2024-06-28 00:16:51,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:51,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:51,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:51,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:51,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:51,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:16:51,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 161 transitions, 2099 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:51,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:51,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:16:51,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:54,103 INFO L124 PetriNetUnfolderBase]: 3527/5693 cut-off events. [2024-06-28 00:16:54,103 INFO L125 PetriNetUnfolderBase]: For 128538/128569 co-relation queries the response was YES. [2024-06-28 00:16:54,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33928 conditions, 5693 events. 3527/5693 cut-off events. For 128538/128569 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 35436 event pairs, 1777 based on Foata normal form. 86/5775 useless extension candidates. Maximal degree in co-relation 33861. Up to 4695 conditions per place. [2024-06-28 00:16:54,148 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 149 selfloop transitions, 68 changer transitions 0/221 dead transitions. [2024-06-28 00:16:54,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 221 transitions, 3018 flow [2024-06-28 00:16:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:16:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:16:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 00:16:54,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44124168514412415 [2024-06-28 00:16:54,150 INFO L175 Difference]: Start difference. First operand has 139 places, 161 transitions, 2099 flow. Second operand 11 states and 199 transitions. [2024-06-28 00:16:54,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 221 transitions, 3018 flow [2024-06-28 00:16:54,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 221 transitions, 2877 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 00:16:54,303 INFO L231 Difference]: Finished difference. Result has 142 places, 164 transitions, 2172 flow [2024-06-28 00:16:54,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2172, PETRI_PLACES=142, PETRI_TRANSITIONS=164} [2024-06-28 00:16:54,304 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2024-06-28 00:16:54,304 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 164 transitions, 2172 flow [2024-06-28 00:16:54,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:54,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:54,304 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 00:16:54,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:16:54,304 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:54,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:54,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2051177997, now seen corresponding path program 2 times [2024-06-28 00:16:54,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:54,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003016813] [2024-06-28 00:16:54,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:54,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:59,762 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 00:16:59,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:59,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003016813] [2024-06-28 00:16:59,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003016813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:59,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:59,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:16:59,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007265328] [2024-06-28 00:16:59,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:59,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:16:59,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:59,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:16:59,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:16:59,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:16:59,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 164 transitions, 2172 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 00:16:59,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:59,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:16:59,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:02,158 INFO L124 PetriNetUnfolderBase]: 3958/6460 cut-off events. [2024-06-28 00:17:02,163 INFO L125 PetriNetUnfolderBase]: For 153471/153502 co-relation queries the response was YES. [2024-06-28 00:17:02,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39368 conditions, 6460 events. 3958/6460 cut-off events. For 153471/153502 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 41610 event pairs, 1921 based on Foata normal form. 70/6526 useless extension candidates. Maximal degree in co-relation 39300. Up to 4567 conditions per place. [2024-06-28 00:17:02,219 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 162 selfloop transitions, 74 changer transitions 1/241 dead transitions. [2024-06-28 00:17:02,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 241 transitions, 3404 flow [2024-06-28 00:17:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:17:02,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:17:02,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-06-28 00:17:02,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532520325203252 [2024-06-28 00:17:02,221 INFO L175 Difference]: Start difference. First operand has 142 places, 164 transitions, 2172 flow. Second operand 12 states and 223 transitions. [2024-06-28 00:17:02,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 241 transitions, 3404 flow [2024-06-28 00:17:02,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 241 transitions, 3224 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 00:17:02,421 INFO L231 Difference]: Finished difference. Result has 146 places, 168 transitions, 2292 flow [2024-06-28 00:17:02,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1992, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2292, PETRI_PLACES=146, PETRI_TRANSITIONS=168} [2024-06-28 00:17:02,422 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 104 predicate places. [2024-06-28 00:17:02,422 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 168 transitions, 2292 flow [2024-06-28 00:17:02,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 00:17:02,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:02,423 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 00:17:02,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:17:02,423 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:02,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:02,423 INFO L85 PathProgramCache]: Analyzing trace with hash 2060374767, now seen corresponding path program 3 times [2024-06-28 00:17:02,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:02,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206038257] [2024-06-28 00:17:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:02,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:09,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:09,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206038257] [2024-06-28 00:17:09,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206038257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:09,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:09,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:17:09,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002077662] [2024-06-28 00:17:09,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:09,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:17:09,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:09,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:17:09,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:17:09,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:17:09,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 168 transitions, 2292 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:09,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:09,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:17:09,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:11,678 INFO L124 PetriNetUnfolderBase]: 4369/7132 cut-off events. [2024-06-28 00:17:11,678 INFO L125 PetriNetUnfolderBase]: For 179362/179390 co-relation queries the response was YES. [2024-06-28 00:17:11,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43939 conditions, 7132 events. 4369/7132 cut-off events. For 179362/179390 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 46850 event pairs, 2030 based on Foata normal form. 68/7194 useless extension candidates. Maximal degree in co-relation 43869. Up to 5234 conditions per place. [2024-06-28 00:17:11,739 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 149 selfloop transitions, 80 changer transitions 10/243 dead transitions. [2024-06-28 00:17:11,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 243 transitions, 3443 flow [2024-06-28 00:17:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:17:11,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:17:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-28 00:17:11,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458980044345898 [2024-06-28 00:17:11,741 INFO L175 Difference]: Start difference. First operand has 146 places, 168 transitions, 2292 flow. Second operand 11 states and 207 transitions. [2024-06-28 00:17:11,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 243 transitions, 3443 flow [2024-06-28 00:17:12,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 243 transitions, 3305 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 00:17:12,024 INFO L231 Difference]: Finished difference. Result has 150 places, 174 transitions, 2388 flow [2024-06-28 00:17:12,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2157, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2388, PETRI_PLACES=150, PETRI_TRANSITIONS=174} [2024-06-28 00:17:12,024 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2024-06-28 00:17:12,025 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 174 transitions, 2388 flow [2024-06-28 00:17:12,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:12,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:12,025 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 00:17:12,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:17:12,025 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:12,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:12,026 INFO L85 PathProgramCache]: Analyzing trace with hash 446465071, now seen corresponding path program 1 times [2024-06-28 00:17:12,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:12,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138959605] [2024-06-28 00:17:12,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:12,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:14,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:14,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:14,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138959605] [2024-06-28 00:17:14,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138959605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:14,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:14,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:17:14,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048398548] [2024-06-28 00:17:14,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:14,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:17:14,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:14,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:17:14,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:17:14,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:17:14,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 174 transitions, 2388 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:14,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:14,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:17:14,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:16,514 INFO L124 PetriNetUnfolderBase]: 4225/6925 cut-off events. [2024-06-28 00:17:16,514 INFO L125 PetriNetUnfolderBase]: For 175037/175089 co-relation queries the response was YES. [2024-06-28 00:17:16,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43653 conditions, 6925 events. 4225/6925 cut-off events. For 175037/175089 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 45859 event pairs, 2216 based on Foata normal form. 49/6944 useless extension candidates. Maximal degree in co-relation 43580. Up to 6338 conditions per place. [2024-06-28 00:17:16,573 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 128 selfloop transitions, 48 changer transitions 0/193 dead transitions. [2024-06-28 00:17:16,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 193 transitions, 2962 flow [2024-06-28 00:17:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:17:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:17:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 00:17:16,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-28 00:17:16,575 INFO L175 Difference]: Start difference. First operand has 150 places, 174 transitions, 2388 flow. Second operand 6 states and 111 transitions. [2024-06-28 00:17:16,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 193 transitions, 2962 flow [2024-06-28 00:17:16,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 193 transitions, 2730 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:16,838 INFO L231 Difference]: Finished difference. Result has 150 places, 177 transitions, 2313 flow [2024-06-28 00:17:16,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2313, PETRI_PLACES=150, PETRI_TRANSITIONS=177} [2024-06-28 00:17:16,838 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2024-06-28 00:17:16,839 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 177 transitions, 2313 flow [2024-06-28 00:17:16,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:16,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:16,839 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 00:17:16,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:17:16,839 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:16,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:16,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2016280523, now seen corresponding path program 1 times [2024-06-28 00:17:16,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:16,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192185553] [2024-06-28 00:17:16,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:16,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:20,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:20,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192185553] [2024-06-28 00:17:20,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192185553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:20,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:20,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:20,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629652449] [2024-06-28 00:17:20,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:20,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:20,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:20,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:20,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:20,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:17:20,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 177 transitions, 2313 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:20,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:20,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:17:20,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:21,720 INFO L124 PetriNetUnfolderBase]: 4348/7061 cut-off events. [2024-06-28 00:17:21,720 INFO L125 PetriNetUnfolderBase]: For 181478/181487 co-relation queries the response was YES. [2024-06-28 00:17:21,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44086 conditions, 7061 events. 4348/7061 cut-off events. For 181478/181487 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 45864 event pairs, 2459 based on Foata normal form. 22/7079 useless extension candidates. Maximal degree in co-relation 44012. Up to 6752 conditions per place. [2024-06-28 00:17:21,780 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 174 selfloop transitions, 23 changer transitions 0/201 dead transitions. [2024-06-28 00:17:21,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 201 transitions, 2888 flow [2024-06-28 00:17:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:17:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:17:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 00:17:21,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39372822299651566 [2024-06-28 00:17:21,782 INFO L175 Difference]: Start difference. First operand has 150 places, 177 transitions, 2313 flow. Second operand 7 states and 113 transitions. [2024-06-28 00:17:21,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 201 transitions, 2888 flow [2024-06-28 00:17:22,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 201 transitions, 2806 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 00:17:22,062 INFO L231 Difference]: Finished difference. Result has 154 places, 180 transitions, 2338 flow [2024-06-28 00:17:22,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2231, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2338, PETRI_PLACES=154, PETRI_TRANSITIONS=180} [2024-06-28 00:17:22,068 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 112 predicate places. [2024-06-28 00:17:22,068 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 180 transitions, 2338 flow [2024-06-28 00:17:22,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:22,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:22,068 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 00:17:22,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:17:22,069 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:22,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:22,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1885703232, now seen corresponding path program 1 times [2024-06-28 00:17:22,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:22,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297247814] [2024-06-28 00:17:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:22,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:24,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:24,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297247814] [2024-06-28 00:17:24,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297247814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:24,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:24,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:24,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300098854] [2024-06-28 00:17:24,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:24,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:24,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:24,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:24,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:24,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:17:24,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 180 transitions, 2338 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:24,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:24,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:17:24,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:25,838 INFO L124 PetriNetUnfolderBase]: 4364/7084 cut-off events. [2024-06-28 00:17:25,838 INFO L125 PetriNetUnfolderBase]: For 183080/183090 co-relation queries the response was YES. [2024-06-28 00:17:25,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44644 conditions, 7084 events. 4364/7084 cut-off events. For 183080/183090 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 46201 event pairs, 2225 based on Foata normal form. 9/7091 useless extension candidates. Maximal degree in co-relation 44568. Up to 6841 conditions per place. [2024-06-28 00:17:25,895 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 183 selfloop transitions, 40 changer transitions 0/227 dead transitions. [2024-06-28 00:17:25,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 227 transitions, 3173 flow [2024-06-28 00:17:25,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:25,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:17:25,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37317073170731707 [2024-06-28 00:17:25,898 INFO L175 Difference]: Start difference. First operand has 154 places, 180 transitions, 2338 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:17:25,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 227 transitions, 3173 flow [2024-06-28 00:17:26,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 227 transitions, 3121 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 00:17:26,155 INFO L231 Difference]: Finished difference. Result has 163 places, 198 transitions, 2644 flow [2024-06-28 00:17:26,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2644, PETRI_PLACES=163, PETRI_TRANSITIONS=198} [2024-06-28 00:17:26,156 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-06-28 00:17:26,156 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 198 transitions, 2644 flow [2024-06-28 00:17:26,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:26,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:26,157 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 00:17:26,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:17:26,157 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:26,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:26,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1911710877, now seen corresponding path program 1 times [2024-06-28 00:17:26,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:26,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147249550] [2024-06-28 00:17:26,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:26,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:31,022 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 00:17:31,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:31,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147249550] [2024-06-28 00:17:31,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147249550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:31,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:31,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:31,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839876306] [2024-06-28 00:17:31,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:31,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:31,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:31,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:31,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:31,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:17:31,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 198 transitions, 2644 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:31,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:31,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:17:31,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:33,452 INFO L124 PetriNetUnfolderBase]: 4373/7119 cut-off events. [2024-06-28 00:17:33,452 INFO L125 PetriNetUnfolderBase]: For 210441/210467 co-relation queries the response was YES. [2024-06-28 00:17:33,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44115 conditions, 7119 events. 4373/7119 cut-off events. For 210441/210467 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 46723 event pairs, 2195 based on Foata normal form. 90/7205 useless extension candidates. Maximal degree in co-relation 44036. Up to 5644 conditions per place. [2024-06-28 00:17:33,510 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 164 selfloop transitions, 76 changer transitions 8/252 dead transitions. [2024-06-28 00:17:33,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 252 transitions, 3572 flow [2024-06-28 00:17:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:17:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:17:33,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-28 00:17:33,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 00:17:33,519 INFO L175 Difference]: Start difference. First operand has 163 places, 198 transitions, 2644 flow. Second operand 11 states and 198 transitions. [2024-06-28 00:17:33,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 252 transitions, 3572 flow [2024-06-28 00:17:33,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 252 transitions, 3461 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 00:17:33,779 INFO L231 Difference]: Finished difference. Result has 169 places, 193 transitions, 2594 flow [2024-06-28 00:17:33,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2594, PETRI_PLACES=169, PETRI_TRANSITIONS=193} [2024-06-28 00:17:33,781 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 127 predicate places. [2024-06-28 00:17:33,781 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 193 transitions, 2594 flow [2024-06-28 00:17:33,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:33,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:33,781 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 00:17:33,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:17:33,781 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:33,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:33,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1122025214, now seen corresponding path program 2 times [2024-06-28 00:17:33,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:33,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554295835] [2024-06-28 00:17:33,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:33,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:37,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:37,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554295835] [2024-06-28 00:17:37,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554295835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:37,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:37,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:37,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558692980] [2024-06-28 00:17:37,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:37,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:37,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:37,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:37,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:37,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:17:37,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 193 transitions, 2594 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:37,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:37,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:17:37,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:39,050 INFO L124 PetriNetUnfolderBase]: 4203/6865 cut-off events. [2024-06-28 00:17:39,050 INFO L125 PetriNetUnfolderBase]: For 184993/184995 co-relation queries the response was YES. [2024-06-28 00:17:39,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43542 conditions, 6865 events. 4203/6865 cut-off events. For 184993/184995 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 44654 event pairs, 1760 based on Foata normal form. 2/6862 useless extension candidates. Maximal degree in co-relation 43461. Up to 6600 conditions per place. [2024-06-28 00:17:39,107 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 168 selfloop transitions, 42 changer transitions 0/214 dead transitions. [2024-06-28 00:17:39,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 214 transitions, 3245 flow [2024-06-28 00:17:39,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:17:39,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:17:39,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-28 00:17:39,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3867595818815331 [2024-06-28 00:17:39,109 INFO L175 Difference]: Start difference. First operand has 169 places, 193 transitions, 2594 flow. Second operand 7 states and 111 transitions. [2024-06-28 00:17:39,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 214 transitions, 3245 flow [2024-06-28 00:17:39,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 214 transitions, 3053 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 00:17:39,361 INFO L231 Difference]: Finished difference. Result has 168 places, 198 transitions, 2591 flow [2024-06-28 00:17:39,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2591, PETRI_PLACES=168, PETRI_TRANSITIONS=198} [2024-06-28 00:17:39,362 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 126 predicate places. [2024-06-28 00:17:39,362 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 198 transitions, 2591 flow [2024-06-28 00:17:39,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:39,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:39,362 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 00:17:39,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:17:39,363 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:39,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:39,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1416736179, now seen corresponding path program 1 times [2024-06-28 00:17:39,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:39,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199205146] [2024-06-28 00:17:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:39,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:42,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:42,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199205146] [2024-06-28 00:17:42,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199205146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:42,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:42,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:42,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951889459] [2024-06-28 00:17:42,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:42,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:42,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:42,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:42,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:42,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:17:42,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 198 transitions, 2591 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:42,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:42,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:17:42,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:43,880 INFO L124 PetriNetUnfolderBase]: 4200/6855 cut-off events. [2024-06-28 00:17:43,880 INFO L125 PetriNetUnfolderBase]: For 188774/188782 co-relation queries the response was YES. [2024-06-28 00:17:43,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43388 conditions, 6855 events. 4200/6855 cut-off events. For 188774/188782 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 44749 event pairs, 2154 based on Foata normal form. 7/6860 useless extension candidates. Maximal degree in co-relation 43304. Up to 6613 conditions per place. [2024-06-28 00:17:43,945 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 183 selfloop transitions, 38 changer transitions 0/225 dead transitions. [2024-06-28 00:17:43,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 225 transitions, 3127 flow [2024-06-28 00:17:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:17:43,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114 [2024-06-28 00:17:43,947 INFO L175 Difference]: Start difference. First operand has 168 places, 198 transitions, 2591 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:17:43,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 225 transitions, 3127 flow [2024-06-28 00:17:44,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 225 transitions, 3027 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-28 00:17:44,261 INFO L231 Difference]: Finished difference. Result has 175 places, 198 transitions, 2580 flow [2024-06-28 00:17:44,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2580, PETRI_PLACES=175, PETRI_TRANSITIONS=198} [2024-06-28 00:17:44,261 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 133 predicate places. [2024-06-28 00:17:44,261 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 198 transitions, 2580 flow [2024-06-28 00:17:44,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:44,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:44,262 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 00:17:44,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:17:44,262 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:44,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:44,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1863755668, now seen corresponding path program 1 times [2024-06-28 00:17:44,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:44,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379043802] [2024-06-28 00:17:44,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:44,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:47,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:47,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379043802] [2024-06-28 00:17:47,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379043802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:47,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:47,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:47,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679773607] [2024-06-28 00:17:47,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:47,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:47,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:47,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:47,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:47,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:17:47,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 198 transitions, 2580 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 00:17:47,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:47,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:17:47,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:49,992 INFO L124 PetriNetUnfolderBase]: 4312/7035 cut-off events. [2024-06-28 00:17:49,992 INFO L125 PetriNetUnfolderBase]: For 210548/210574 co-relation queries the response was YES. [2024-06-28 00:17:50,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44639 conditions, 7035 events. 4312/7035 cut-off events. For 210548/210574 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 46044 event pairs, 2125 based on Foata normal form. 34/7065 useless extension candidates. Maximal degree in co-relation 44552. Up to 6544 conditions per place. [2024-06-28 00:17:50,063 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 179 selfloop transitions, 49 changer transitions 0/232 dead transitions. [2024-06-28 00:17:50,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 232 transitions, 3337 flow [2024-06-28 00:17:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:50,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 00:17:50,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-28 00:17:50,070 INFO L175 Difference]: Start difference. First operand has 175 places, 198 transitions, 2580 flow. Second operand 8 states and 130 transitions. [2024-06-28 00:17:50,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 232 transitions, 3337 flow [2024-06-28 00:17:50,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 232 transitions, 3257 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 00:17:50,353 INFO L231 Difference]: Finished difference. Result has 176 places, 209 transitions, 2826 flow [2024-06-28 00:17:50,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2500, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2826, PETRI_PLACES=176, PETRI_TRANSITIONS=209} [2024-06-28 00:17:50,353 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-06-28 00:17:50,354 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 209 transitions, 2826 flow [2024-06-28 00:17:50,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 00:17:50,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:50,354 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 00:17:50,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:17:50,354 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:50,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:50,355 INFO L85 PathProgramCache]: Analyzing trace with hash 614932140, now seen corresponding path program 2 times [2024-06-28 00:17:50,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:50,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402940349] [2024-06-28 00:17:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:50,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:54,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:54,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402940349] [2024-06-28 00:17:54,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402940349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:54,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:54,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:54,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640103802] [2024-06-28 00:17:54,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:54,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:54,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:54,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:54,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:54,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:17:54,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 209 transitions, 2826 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 00:17:54,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:54,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:17:54,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:56,651 INFO L124 PetriNetUnfolderBase]: 4372/7136 cut-off events. [2024-06-28 00:17:56,651 INFO L125 PetriNetUnfolderBase]: For 226674/226697 co-relation queries the response was YES. [2024-06-28 00:17:56,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46724 conditions, 7136 events. 4372/7136 cut-off events. For 226674/226697 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 46908 event pairs, 2199 based on Foata normal form. 29/7158 useless extension candidates. Maximal degree in co-relation 46635. Up to 6541 conditions per place. [2024-06-28 00:17:56,712 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 171 selfloop transitions, 60 changer transitions 0/235 dead transitions. [2024-06-28 00:17:56,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 235 transitions, 3632 flow [2024-06-28 00:17:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:56,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 00:17:56,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-28 00:17:56,714 INFO L175 Difference]: Start difference. First operand has 176 places, 209 transitions, 2826 flow. Second operand 8 states and 132 transitions. [2024-06-28 00:17:56,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 235 transitions, 3632 flow [2024-06-28 00:17:57,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 235 transitions, 3546 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 00:17:57,069 INFO L231 Difference]: Finished difference. Result has 180 places, 213 transitions, 2955 flow [2024-06-28 00:17:57,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2740, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2955, PETRI_PLACES=180, PETRI_TRANSITIONS=213} [2024-06-28 00:17:57,070 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 138 predicate places. [2024-06-28 00:17:57,070 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 213 transitions, 2955 flow [2024-06-28 00:17:57,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 00:17:57,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:57,070 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 00:17:57,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:17:57,070 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:57,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:57,071 INFO L85 PathProgramCache]: Analyzing trace with hash 615377610, now seen corresponding path program 3 times [2024-06-28 00:17:57,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:57,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6930870] [2024-06-28 00:17:57,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:57,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:01,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:01,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6930870] [2024-06-28 00:18:01,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6930870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:01,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:01,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:18:01,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587917589] [2024-06-28 00:18:01,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:01,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:18:01,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:01,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:18:01,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:18:01,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:18:01,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 213 transitions, 2955 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:01,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:01,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:18:01,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:02,914 INFO L124 PetriNetUnfolderBase]: 4425/7238 cut-off events. [2024-06-28 00:18:02,914 INFO L125 PetriNetUnfolderBase]: For 251869/251920 co-relation queries the response was YES. [2024-06-28 00:18:02,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48483 conditions, 7238 events. 4425/7238 cut-off events. For 251869/251920 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 48017 event pairs, 2139 based on Foata normal form. 56/7256 useless extension candidates. Maximal degree in co-relation 48393. Up to 6186 conditions per place. [2024-06-28 00:18:02,977 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 155 selfloop transitions, 65 changer transitions 0/246 dead transitions. [2024-06-28 00:18:02,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 246 transitions, 3905 flow [2024-06-28 00:18:02,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:18:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:18:02,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 00:18:02,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-28 00:18:02,979 INFO L175 Difference]: Start difference. First operand has 180 places, 213 transitions, 2955 flow. Second operand 8 states and 139 transitions. [2024-06-28 00:18:02,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 246 transitions, 3905 flow [2024-06-28 00:18:03,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 246 transitions, 3700 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 00:18:03,343 INFO L231 Difference]: Finished difference. Result has 182 places, 218 transitions, 3024 flow [2024-06-28 00:18:03,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2750, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3024, PETRI_PLACES=182, PETRI_TRANSITIONS=218} [2024-06-28 00:18:03,344 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 140 predicate places. [2024-06-28 00:18:03,344 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 218 transitions, 3024 flow [2024-06-28 00:18:03,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:03,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:03,345 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 00:18:03,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:18:03,345 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:03,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:03,345 INFO L85 PathProgramCache]: Analyzing trace with hash 615383562, now seen corresponding path program 1 times [2024-06-28 00:18:03,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:03,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107799984] [2024-06-28 00:18:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:03,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:07,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:07,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107799984] [2024-06-28 00:18:07,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107799984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:07,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:07,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:07,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435976377] [2024-06-28 00:18:07,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:07,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:07,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:07,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:07,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:07,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:18:07,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 218 transitions, 3024 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:07,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:07,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:18:07,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:10,031 INFO L124 PetriNetUnfolderBase]: 4486/7305 cut-off events. [2024-06-28 00:18:10,032 INFO L125 PetriNetUnfolderBase]: For 250575/250584 co-relation queries the response was YES. [2024-06-28 00:18:10,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49478 conditions, 7305 events. 4486/7305 cut-off events. For 250575/250584 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 47962 event pairs, 2449 based on Foata normal form. 8/7309 useless extension candidates. Maximal degree in co-relation 49387. Up to 6930 conditions per place. [2024-06-28 00:18:10,098 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 205 selfloop transitions, 30 changer transitions 0/239 dead transitions. [2024-06-28 00:18:10,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 239 transitions, 3661 flow [2024-06-28 00:18:10,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:18:10,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:18:10,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 00:18:10,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-28 00:18:10,100 INFO L175 Difference]: Start difference. First operand has 182 places, 218 transitions, 3024 flow. Second operand 7 states and 112 transitions. [2024-06-28 00:18:10,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 239 transitions, 3661 flow [2024-06-28 00:18:10,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 239 transitions, 3517 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 00:18:10,487 INFO L231 Difference]: Finished difference. Result has 184 places, 219 transitions, 2989 flow [2024-06-28 00:18:10,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2890, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2989, PETRI_PLACES=184, PETRI_TRANSITIONS=219} [2024-06-28 00:18:10,488 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 142 predicate places. [2024-06-28 00:18:10,488 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 219 transitions, 2989 flow [2024-06-28 00:18:10,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:10,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:10,488 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 00:18:10,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:18:10,489 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:10,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:10,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1353996911, now seen corresponding path program 1 times [2024-06-28 00:18:10,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:10,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460419747] [2024-06-28 00:18:10,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:10,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:13,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:13,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460419747] [2024-06-28 00:18:13,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460419747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:13,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:13,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:18:13,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384037659] [2024-06-28 00:18:13,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:13,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:18:13,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:13,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:18:13,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:18:13,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 00:18:13,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 219 transitions, 2989 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:13,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:13,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 00:18:13,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:15,548 INFO L124 PetriNetUnfolderBase]: 3457/6166 cut-off events. [2024-06-28 00:18:15,548 INFO L125 PetriNetUnfolderBase]: For 260489/260717 co-relation queries the response was YES. [2024-06-28 00:18:15,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43981 conditions, 6166 events. 3457/6166 cut-off events. For 260489/260717 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 45092 event pairs, 1440 based on Foata normal form. 36/6001 useless extension candidates. Maximal degree in co-relation 43889. Up to 4620 conditions per place. [2024-06-28 00:18:15,618 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 154 selfloop transitions, 44 changer transitions 0/265 dead transitions. [2024-06-28 00:18:15,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 265 transitions, 3799 flow [2024-06-28 00:18:15,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:15,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 00:18:15,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292682926829268 [2024-06-28 00:18:15,620 INFO L175 Difference]: Start difference. First operand has 184 places, 219 transitions, 2989 flow. Second operand 10 states and 176 transitions. [2024-06-28 00:18:15,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 265 transitions, 3799 flow [2024-06-28 00:18:16,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 265 transitions, 3732 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:18:16,184 INFO L231 Difference]: Finished difference. Result has 192 places, 229 transitions, 3194 flow [2024-06-28 00:18:16,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2923, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3194, PETRI_PLACES=192, PETRI_TRANSITIONS=229} [2024-06-28 00:18:16,185 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 150 predicate places. [2024-06-28 00:18:16,185 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 229 transitions, 3194 flow [2024-06-28 00:18:16,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:16,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:16,186 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 00:18:16,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:18:16,186 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:16,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:16,187 INFO L85 PathProgramCache]: Analyzing trace with hash -439101837, now seen corresponding path program 1 times [2024-06-28 00:18:16,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:16,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810129608] [2024-06-28 00:18:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:16,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:18,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:18,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810129608] [2024-06-28 00:18:18,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810129608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:18,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:18,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:18:18,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427626932] [2024-06-28 00:18:18,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:18,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:18:18,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:18,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:18:18,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:18:18,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:18:18,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 229 transitions, 3194 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 00:18:18,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:18,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:18:18,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:20,179 INFO L124 PetriNetUnfolderBase]: 4641/7522 cut-off events. [2024-06-28 00:18:20,180 INFO L125 PetriNetUnfolderBase]: For 275664/275690 co-relation queries the response was YES. [2024-06-28 00:18:20,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52157 conditions, 7522 events. 4641/7522 cut-off events. For 275664/275690 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 49193 event pairs, 1777 based on Foata normal form. 24/7542 useless extension candidates. Maximal degree in co-relation 52061. Up to 6945 conditions per place. [2024-06-28 00:18:20,260 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 208 selfloop transitions, 74 changer transitions 3/289 dead transitions. [2024-06-28 00:18:20,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 289 transitions, 4217 flow [2024-06-28 00:18:20,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:18:20,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:18:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 00:18:20,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42572062084257206 [2024-06-28 00:18:20,262 INFO L175 Difference]: Start difference. First operand has 192 places, 229 transitions, 3194 flow. Second operand 11 states and 192 transitions. [2024-06-28 00:18:20,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 289 transitions, 4217 flow [2024-06-28 00:18:20,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 289 transitions, 4136 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 00:18:20,785 INFO L231 Difference]: Finished difference. Result has 202 places, 240 transitions, 3402 flow [2024-06-28 00:18:20,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3402, PETRI_PLACES=202, PETRI_TRANSITIONS=240} [2024-06-28 00:18:20,786 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 160 predicate places. [2024-06-28 00:18:20,786 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 240 transitions, 3402 flow [2024-06-28 00:18:20,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 00:18:20,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:20,788 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 00:18:20,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:18:20,788 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:20,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:20,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2017934127, now seen corresponding path program 2 times [2024-06-28 00:18:20,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:20,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191626241] [2024-06-28 00:18:20,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:20,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:25,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:25,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191626241] [2024-06-28 00:18:25,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191626241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:25,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:25,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:25,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621223623] [2024-06-28 00:18:25,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:25,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:25,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:25,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:25,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:25,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:18:25,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 240 transitions, 3402 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:25,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:25,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:18:25,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:27,642 INFO L124 PetriNetUnfolderBase]: 4615/7497 cut-off events. [2024-06-28 00:18:27,643 INFO L125 PetriNetUnfolderBase]: For 287606/287612 co-relation queries the response was YES. [2024-06-28 00:18:27,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52394 conditions, 7497 events. 4615/7497 cut-off events. For 287606/287612 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 49220 event pairs, 2137 based on Foata normal form. 12/7508 useless extension candidates. Maximal degree in co-relation 52296. Up to 7105 conditions per place. [2024-06-28 00:18:27,726 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 223 selfloop transitions, 53 changer transitions 1/281 dead transitions. [2024-06-28 00:18:27,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 281 transitions, 4276 flow [2024-06-28 00:18:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:27,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 00:18:27,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 00:18:27,728 INFO L175 Difference]: Start difference. First operand has 202 places, 240 transitions, 3402 flow. Second operand 9 states and 156 transitions. [2024-06-28 00:18:27,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 281 transitions, 4276 flow [2024-06-28 00:18:28,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 281 transitions, 4138 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:18:28,323 INFO L231 Difference]: Finished difference. Result has 205 places, 242 transitions, 3412 flow [2024-06-28 00:18:28,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3266, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3412, PETRI_PLACES=205, PETRI_TRANSITIONS=242} [2024-06-28 00:18:28,323 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-06-28 00:18:28,324 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 242 transitions, 3412 flow [2024-06-28 00:18:28,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:28,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:28,324 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 00:18:28,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:18:28,324 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:28,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:28,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1029619235, now seen corresponding path program 3 times [2024-06-28 00:18:28,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:28,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563108688] [2024-06-28 00:18:28,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:28,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:33,153 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 00:18:33,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:33,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563108688] [2024-06-28 00:18:33,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563108688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:33,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:33,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:33,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523213178] [2024-06-28 00:18:33,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:33,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:33,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:33,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:33,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:33,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:18:33,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 242 transitions, 3412 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:33,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:33,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:18:33,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:35,913 INFO L124 PetriNetUnfolderBase]: 4631/7525 cut-off events. [2024-06-28 00:18:35,914 INFO L125 PetriNetUnfolderBase]: For 299451/299457 co-relation queries the response was YES. [2024-06-28 00:18:35,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52856 conditions, 7525 events. 4631/7525 cut-off events. For 299451/299457 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 49476 event pairs, 2134 based on Foata normal form. 8/7532 useless extension candidates. Maximal degree in co-relation 52757. Up to 7117 conditions per place. [2024-06-28 00:18:36,020 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 227 selfloop transitions, 58 changer transitions 1/290 dead transitions. [2024-06-28 00:18:36,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 290 transitions, 4408 flow [2024-06-28 00:18:36,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:18:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:18:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 00:18:36,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968957871396896 [2024-06-28 00:18:36,022 INFO L175 Difference]: Start difference. First operand has 205 places, 242 transitions, 3412 flow. Second operand 11 states and 179 transitions. [2024-06-28 00:18:36,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 290 transitions, 4408 flow [2024-06-28 00:18:36,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 290 transitions, 4308 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:18:36,980 INFO L231 Difference]: Finished difference. Result has 210 places, 247 transitions, 3525 flow [2024-06-28 00:18:36,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3323, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3525, PETRI_PLACES=210, PETRI_TRANSITIONS=247} [2024-06-28 00:18:36,993 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 168 predicate places. [2024-06-28 00:18:36,993 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 247 transitions, 3525 flow [2024-06-28 00:18:36,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:36,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:36,993 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 00:18:36,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:18:36,994 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:36,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:36,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2018750165, now seen corresponding path program 1 times [2024-06-28 00:18:36,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:36,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629905190] [2024-06-28 00:18:36,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:36,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:41,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:41,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629905190] [2024-06-28 00:18:41,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629905190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:41,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:41,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:41,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104358478] [2024-06-28 00:18:41,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:41,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:41,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:41,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:41,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:18:41,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 247 transitions, 3525 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:41,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:41,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:18:41,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:44,458 INFO L124 PetriNetUnfolderBase]: 4678/7605 cut-off events. [2024-06-28 00:18:44,459 INFO L125 PetriNetUnfolderBase]: For 304830/304838 co-relation queries the response was YES. [2024-06-28 00:18:44,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53130 conditions, 7605 events. 4678/7605 cut-off events. For 304830/304838 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 49981 event pairs, 2142 based on Foata normal form. 14/7617 useless extension candidates. Maximal degree in co-relation 53030. Up to 7261 conditions per place. [2024-06-28 00:18:44,550 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 235 selfloop transitions, 45 changer transitions 0/284 dead transitions. [2024-06-28 00:18:44,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 284 transitions, 4284 flow [2024-06-28 00:18:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:18:44,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780487804878049 [2024-06-28 00:18:44,552 INFO L175 Difference]: Start difference. First operand has 210 places, 247 transitions, 3525 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:18:44,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 284 transitions, 4284 flow [2024-06-28 00:18:45,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 284 transitions, 4179 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:18:45,289 INFO L231 Difference]: Finished difference. Result has 213 places, 251 transitions, 3588 flow [2024-06-28 00:18:45,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3420, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3588, PETRI_PLACES=213, PETRI_TRANSITIONS=251} [2024-06-28 00:18:45,291 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 171 predicate places. [2024-06-28 00:18:45,291 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 251 transitions, 3588 flow [2024-06-28 00:18:45,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:45,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:45,291 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 00:18:45,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:18:45,292 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:45,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:45,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1942215363, now seen corresponding path program 4 times [2024-06-28 00:18:45,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:45,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797716872] [2024-06-28 00:18:45,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:45,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:51,286 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 00:18:51,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:51,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797716872] [2024-06-28 00:18:51,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797716872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:51,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:51,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:51,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210341204] [2024-06-28 00:18:51,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:51,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:51,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:51,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:18:51,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 251 transitions, 3588 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:51,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:51,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:18:51,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:53,669 INFO L124 PetriNetUnfolderBase]: 4675/7580 cut-off events. [2024-06-28 00:18:53,670 INFO L125 PetriNetUnfolderBase]: For 306335/306335 co-relation queries the response was YES. [2024-06-28 00:18:53,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53432 conditions, 7580 events. 4675/7580 cut-off events. For 306335/306335 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 49527 event pairs, 1757 based on Foata normal form. 2/7581 useless extension candidates. Maximal degree in co-relation 53330. Up to 7117 conditions per place. [2024-06-28 00:18:53,764 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 227 selfloop transitions, 67 changer transitions 3/301 dead transitions. [2024-06-28 00:18:53,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 301 transitions, 4678 flow [2024-06-28 00:18:53,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 00:18:53,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3829268292682927 [2024-06-28 00:18:53,766 INFO L175 Difference]: Start difference. First operand has 213 places, 251 transitions, 3588 flow. Second operand 10 states and 157 transitions. [2024-06-28 00:18:53,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 301 transitions, 4678 flow [2024-06-28 00:18:54,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 301 transitions, 4599 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:18:54,278 INFO L231 Difference]: Finished difference. Result has 219 places, 260 transitions, 3900 flow [2024-06-28 00:18:54,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3509, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3900, PETRI_PLACES=219, PETRI_TRANSITIONS=260} [2024-06-28 00:18:54,279 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 177 predicate places. [2024-06-28 00:18:54,279 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 260 transitions, 3900 flow [2024-06-28 00:18:54,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:54,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:54,279 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 00:18:54,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:18:54,280 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:54,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:54,280 INFO L85 PathProgramCache]: Analyzing trace with hash -700149363, now seen corresponding path program 2 times [2024-06-28 00:18:54,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:54,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490398384] [2024-06-28 00:18:54,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:54,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:58,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:58,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:58,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490398384] [2024-06-28 00:18:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490398384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:58,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:58,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:58,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464001391] [2024-06-28 00:18:58,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:58,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:58,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:58,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:58,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:59,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:18:59,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 260 transitions, 3900 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:59,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:59,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:18:59,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:01,347 INFO L124 PetriNetUnfolderBase]: 4561/7407 cut-off events. [2024-06-28 00:19:01,347 INFO L125 PetriNetUnfolderBase]: For 322310/322312 co-relation queries the response was YES. [2024-06-28 00:19:01,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53019 conditions, 7407 events. 4561/7407 cut-off events. For 322310/322312 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 47795 event pairs, 1711 based on Foata normal form. 6/7408 useless extension candidates. Maximal degree in co-relation 52913. Up to 6837 conditions per place. [2024-06-28 00:19:01,418 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 233 selfloop transitions, 56 changer transitions 0/293 dead transitions. [2024-06-28 00:19:01,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 293 transitions, 4776 flow [2024-06-28 00:19:01,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:19:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:19:01,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 00:19:01,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-28 00:19:01,420 INFO L175 Difference]: Start difference. First operand has 219 places, 260 transitions, 3900 flow. Second operand 8 states and 129 transitions. [2024-06-28 00:19:01,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 293 transitions, 4776 flow [2024-06-28 00:19:01,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 293 transitions, 4594 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-28 00:19:01,942 INFO L231 Difference]: Finished difference. Result has 217 places, 263 transitions, 3917 flow [2024-06-28 00:19:01,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3718, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3917, PETRI_PLACES=217, PETRI_TRANSITIONS=263} [2024-06-28 00:19:01,943 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 175 predicate places. [2024-06-28 00:19:01,943 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 263 transitions, 3917 flow [2024-06-28 00:19:01,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:01,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:01,943 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 00:19:01,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:19:01,943 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:01,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:01,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1483162367, now seen corresponding path program 2 times [2024-06-28 00:19:01,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:01,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850918209] [2024-06-28 00:19:01,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:01,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:07,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:07,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850918209] [2024-06-28 00:19:07,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850918209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:07,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:07,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:19:07,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100506012] [2024-06-28 00:19:07,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:07,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:19:07,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:07,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:19:07,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:19:07,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:19:07,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 263 transitions, 3917 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 00:19:07,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:07,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:19:07,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:09,993 INFO L124 PetriNetUnfolderBase]: 4594/7460 cut-off events. [2024-06-28 00:19:09,993 INFO L125 PetriNetUnfolderBase]: For 338620/338622 co-relation queries the response was YES. [2024-06-28 00:19:10,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53663 conditions, 7460 events. 4594/7460 cut-off events. For 338620/338622 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 48351 event pairs, 1756 based on Foata normal form. 10/7465 useless extension candidates. Maximal degree in co-relation 53558. Up to 7149 conditions per place. [2024-06-28 00:19:10,081 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 234 selfloop transitions, 61 changer transitions 0/299 dead transitions. [2024-06-28 00:19:10,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 299 transitions, 4903 flow [2024-06-28 00:19:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:10,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:10,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-28 00:19:10,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35501355013550134 [2024-06-28 00:19:10,083 INFO L175 Difference]: Start difference. First operand has 217 places, 263 transitions, 3917 flow. Second operand 9 states and 131 transitions. [2024-06-28 00:19:10,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 299 transitions, 4903 flow [2024-06-28 00:19:10,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 299 transitions, 4806 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 00:19:10,956 INFO L231 Difference]: Finished difference. Result has 223 places, 279 transitions, 4232 flow [2024-06-28 00:19:10,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3832, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4232, PETRI_PLACES=223, PETRI_TRANSITIONS=279} [2024-06-28 00:19:10,957 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 181 predicate places. [2024-06-28 00:19:10,957 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 279 transitions, 4232 flow [2024-06-28 00:19:10,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 00:19:10,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:10,957 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 00:19:10,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:19:10,958 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:10,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:10,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1121524859, now seen corresponding path program 1 times [2024-06-28 00:19:10,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:10,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072149365] [2024-06-28 00:19:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:10,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:15,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:15,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072149365] [2024-06-28 00:19:15,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072149365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:15,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:15,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:19:15,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85318181] [2024-06-28 00:19:15,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:15,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:19:15,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:15,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:19:15,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:19:15,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:19:15,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 279 transitions, 4232 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:15,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:15,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:19:15,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:18,164 INFO L124 PetriNetUnfolderBase]: 4582/7471 cut-off events. [2024-06-28 00:19:18,164 INFO L125 PetriNetUnfolderBase]: For 345978/346010 co-relation queries the response was YES. [2024-06-28 00:19:18,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53782 conditions, 7471 events. 4582/7471 cut-off events. For 345978/346010 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 48902 event pairs, 2180 based on Foata normal form. 26/7492 useless extension candidates. Maximal degree in co-relation 53674. Up to 6855 conditions per place. [2024-06-28 00:19:18,286 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 234 selfloop transitions, 66 changer transitions 0/304 dead transitions. [2024-06-28 00:19:18,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 304 transitions, 5054 flow [2024-06-28 00:19:18,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:19:18,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:19:18,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 00:19:18,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 00:19:18,289 INFO L175 Difference]: Start difference. First operand has 223 places, 279 transitions, 4232 flow. Second operand 7 states and 126 transitions. [2024-06-28 00:19:18,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 304 transitions, 5054 flow [2024-06-28 00:19:19,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 304 transitions, 4952 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 00:19:19,184 INFO L231 Difference]: Finished difference. Result has 227 places, 279 transitions, 4268 flow [2024-06-28 00:19:19,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4130, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4268, PETRI_PLACES=227, PETRI_TRANSITIONS=279} [2024-06-28 00:19:19,184 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 185 predicate places. [2024-06-28 00:19:19,185 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 279 transitions, 4268 flow [2024-06-28 00:19:19,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:19,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:19,185 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 00:19:19,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:19:19,185 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:19,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:19,186 INFO L85 PathProgramCache]: Analyzing trace with hash 509972861, now seen corresponding path program 5 times [2024-06-28 00:19:19,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:19,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851152896] [2024-06-28 00:19:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:19,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:23,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:23,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:23,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851152896] [2024-06-28 00:19:23,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851152896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:23,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:23,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:19:23,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898429302] [2024-06-28 00:19:23,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:23,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:19:23,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:23,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:19:23,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:19:23,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:19:23,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 279 transitions, 4268 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 00:19:23,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:23,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:19:23,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:26,673 INFO L124 PetriNetUnfolderBase]: 4596/7494 cut-off events. [2024-06-28 00:19:26,673 INFO L125 PetriNetUnfolderBase]: For 357931/357960 co-relation queries the response was YES. [2024-06-28 00:19:26,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54094 conditions, 7494 events. 4596/7494 cut-off events. For 357931/357960 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 48969 event pairs, 1726 based on Foata normal form. 20/7506 useless extension candidates. Maximal degree in co-relation 53985. Up to 6652 conditions per place. [2024-06-28 00:19:26,763 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 187 selfloop transitions, 122 changer transitions 1/314 dead transitions. [2024-06-28 00:19:26,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 314 transitions, 5401 flow [2024-06-28 00:19:26,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:19:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:19:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 00:19:26,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-28 00:19:26,766 INFO L175 Difference]: Start difference. First operand has 227 places, 279 transitions, 4268 flow. Second operand 11 states and 176 transitions. [2024-06-28 00:19:26,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 314 transitions, 5401 flow [2024-06-28 00:19:27,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 314 transitions, 5298 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 00:19:27,519 INFO L231 Difference]: Finished difference. Result has 234 places, 282 transitions, 4465 flow [2024-06-28 00:19:27,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4465, PETRI_PLACES=234, PETRI_TRANSITIONS=282} [2024-06-28 00:19:27,519 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2024-06-28 00:19:27,520 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 282 transitions, 4465 flow [2024-06-28 00:19:27,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 00:19:27,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:27,520 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 00:19:27,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:19:27,520 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:27,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:27,521 INFO L85 PathProgramCache]: Analyzing trace with hash 542331467, now seen corresponding path program 2 times [2024-06-28 00:19:27,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:27,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387327050] [2024-06-28 00:19:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:27,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:31,535 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 00:19:31,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:31,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387327050] [2024-06-28 00:19:31,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387327050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:31,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:31,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:19:31,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852212966] [2024-06-28 00:19:31,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:31,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:19:31,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:31,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:19:31,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:19:31,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:19:31,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 282 transitions, 4465 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:31,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:31,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:19:31,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:34,869 INFO L124 PetriNetUnfolderBase]: 4968/8089 cut-off events. [2024-06-28 00:19:34,869 INFO L125 PetriNetUnfolderBase]: For 387642/387650 co-relation queries the response was YES. [2024-06-28 00:19:34,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59804 conditions, 8089 events. 4968/8089 cut-off events. For 387642/387650 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 53391 event pairs, 2086 based on Foata normal form. 8/8095 useless extension candidates. Maximal degree in co-relation 59694. Up to 7106 conditions per place. [2024-06-28 00:19:34,977 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 266 selfloop transitions, 127 changer transitions 3/400 dead transitions. [2024-06-28 00:19:34,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 400 transitions, 7394 flow [2024-06-28 00:19:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:34,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:34,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 00:19:34,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092140921409214 [2024-06-28 00:19:34,980 INFO L175 Difference]: Start difference. First operand has 234 places, 282 transitions, 4465 flow. Second operand 9 states and 151 transitions. [2024-06-28 00:19:34,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 400 transitions, 7394 flow [2024-06-28 00:19:35,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 400 transitions, 7051 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 00:19:35,934 INFO L231 Difference]: Finished difference. Result has 240 places, 353 transitions, 5980 flow [2024-06-28 00:19:35,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4255, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5980, PETRI_PLACES=240, PETRI_TRANSITIONS=353} [2024-06-28 00:19:35,935 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 198 predicate places. [2024-06-28 00:19:35,935 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 353 transitions, 5980 flow [2024-06-28 00:19:35,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:35,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:35,935 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 00:19:35,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:19:35,936 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:35,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:35,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1059249157, now seen corresponding path program 3 times [2024-06-28 00:19:35,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:35,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793465997] [2024-06-28 00:19:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:35,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:41,358 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 00:19:41,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:41,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793465997] [2024-06-28 00:19:41,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793465997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:41,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:41,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:19:41,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601972458] [2024-06-28 00:19:41,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:41,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:19:41,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:41,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:19:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:19:41,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:19:41,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 353 transitions, 5980 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:41,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:41,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:19:41,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:44,544 INFO L124 PetriNetUnfolderBase]: 5003/8141 cut-off events. [2024-06-28 00:19:44,544 INFO L125 PetriNetUnfolderBase]: For 405140/405181 co-relation queries the response was YES. [2024-06-28 00:19:44,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61980 conditions, 8141 events. 5003/8141 cut-off events. For 405140/405181 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 53602 event pairs, 2272 based on Foata normal form. 18/8145 useless extension candidates. Maximal degree in co-relation 61866. Up to 7140 conditions per place. [2024-06-28 00:19:44,623 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 228 selfloop transitions, 158 changer transitions 3/393 dead transitions. [2024-06-28 00:19:44,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 393 transitions, 7509 flow [2024-06-28 00:19:44,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:19:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:19:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 00:19:44,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414634146341464 [2024-06-28 00:19:44,626 INFO L175 Difference]: Start difference. First operand has 240 places, 353 transitions, 5980 flow. Second operand 8 states and 126 transitions. [2024-06-28 00:19:44,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 393 transitions, 7509 flow [2024-06-28 00:19:45,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 393 transitions, 7267 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-06-28 00:19:45,577 INFO L231 Difference]: Finished difference. Result has 246 places, 374 transitions, 6559 flow [2024-06-28 00:19:45,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5758, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6559, PETRI_PLACES=246, PETRI_TRANSITIONS=374} [2024-06-28 00:19:45,579 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 204 predicate places. [2024-06-28 00:19:45,579 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 374 transitions, 6559 flow [2024-06-28 00:19:45,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:45,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:45,579 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 00:19:45,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:19:45,580 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:45,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:45,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1483165343, now seen corresponding path program 6 times [2024-06-28 00:19:45,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:45,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989450313] [2024-06-28 00:19:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:45,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:50,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:50,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989450313] [2024-06-28 00:19:50,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989450313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:50,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:50,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:19:50,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123242121] [2024-06-28 00:19:50,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:50,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:19:50,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:50,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:19:50,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:19:50,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:19:50,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 374 transitions, 6559 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:50,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:50,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:19:50,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:54,059 INFO L124 PetriNetUnfolderBase]: 4777/7716 cut-off events. [2024-06-28 00:19:54,059 INFO L125 PetriNetUnfolderBase]: For 418081/418083 co-relation queries the response was YES. [2024-06-28 00:19:54,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61104 conditions, 7716 events. 4777/7716 cut-off events. For 418081/418083 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 49533 event pairs, 1572 based on Foata normal form. 2/7713 useless extension candidates. Maximal degree in co-relation 60988. Up to 6353 conditions per place. [2024-06-28 00:19:54,183 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 193 selfloop transitions, 216 changer transitions 1/414 dead transitions. [2024-06-28 00:19:54,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 414 transitions, 7983 flow [2024-06-28 00:19:54,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:19:54,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:19:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 00:19:54,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968957871396896 [2024-06-28 00:19:54,185 INFO L175 Difference]: Start difference. First operand has 246 places, 374 transitions, 6559 flow. Second operand 11 states and 179 transitions. [2024-06-28 00:19:54,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 414 transitions, 7983 flow [2024-06-28 00:19:55,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 414 transitions, 7760 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 00:19:55,587 INFO L231 Difference]: Finished difference. Result has 254 places, 380 transitions, 6973 flow [2024-06-28 00:19:55,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6336, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6973, PETRI_PLACES=254, PETRI_TRANSITIONS=380} [2024-06-28 00:19:55,588 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 212 predicate places. [2024-06-28 00:19:55,588 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 380 transitions, 6973 flow [2024-06-28 00:19:55,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:55,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:55,589 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 00:19:55,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:19:55,589 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:55,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:55,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1883016549, now seen corresponding path program 3 times [2024-06-28 00:19:55,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:55,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343353134] [2024-06-28 00:19:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:55,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:02,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:02,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:02,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343353134] [2024-06-28 00:20:02,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343353134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:02,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:02,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:20:02,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334442972] [2024-06-28 00:20:02,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:02,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:20:02,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:02,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:20:02,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:20:02,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:20:02,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 380 transitions, 6973 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:02,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:02,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:20:02,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:05,982 INFO L124 PetriNetUnfolderBase]: 4792/7741 cut-off events. [2024-06-28 00:20:05,982 INFO L125 PetriNetUnfolderBase]: For 449917/449919 co-relation queries the response was YES. [2024-06-28 00:20:06,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62965 conditions, 7741 events. 4792/7741 cut-off events. For 449917/449919 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 49767 event pairs, 1716 based on Foata normal form. 8/7744 useless extension candidates. Maximal degree in co-relation 62848. Up to 7379 conditions per place. [2024-06-28 00:20:06,102 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 336 selfloop transitions, 60 changer transitions 0/400 dead transitions. [2024-06-28 00:20:06,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 400 transitions, 7921 flow [2024-06-28 00:20:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:20:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:20:06,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-28 00:20:06,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35501355013550134 [2024-06-28 00:20:06,104 INFO L175 Difference]: Start difference. First operand has 254 places, 380 transitions, 6973 flow. Second operand 9 states and 131 transitions. [2024-06-28 00:20:06,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 400 transitions, 7921 flow [2024-06-28 00:20:07,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 400 transitions, 7724 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 00:20:07,335 INFO L231 Difference]: Finished difference. Result has 256 places, 381 transitions, 6936 flow [2024-06-28 00:20:07,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6778, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6936, PETRI_PLACES=256, PETRI_TRANSITIONS=381} [2024-06-28 00:20:07,336 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 214 predicate places. [2024-06-28 00:20:07,336 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 381 transitions, 6936 flow [2024-06-28 00:20:07,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:07,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:07,337 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 00:20:07,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:20:07,337 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:07,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:07,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1883028639, now seen corresponding path program 4 times [2024-06-28 00:20:07,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:07,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157500774] [2024-06-28 00:20:07,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:07,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:13,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:13,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157500774] [2024-06-28 00:20:13,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157500774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:13,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:13,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:20:13,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848930820] [2024-06-28 00:20:13,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:13,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:20:13,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:13,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:20:13,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:20:13,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:20:13,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 381 transitions, 6936 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:13,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:13,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:20:13,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:16,914 INFO L124 PetriNetUnfolderBase]: 4812/7785 cut-off events. [2024-06-28 00:20:16,914 INFO L125 PetriNetUnfolderBase]: For 443075/443077 co-relation queries the response was YES. [2024-06-28 00:20:16,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62356 conditions, 7785 events. 4812/7785 cut-off events. For 443075/443077 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 50245 event pairs, 1716 based on Foata normal form. 6/7786 useless extension candidates. Maximal degree in co-relation 62239. Up to 7379 conditions per place. [2024-06-28 00:20:17,036 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 340 selfloop transitions, 61 changer transitions 0/405 dead transitions. [2024-06-28 00:20:17,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 405 transitions, 7925 flow [2024-06-28 00:20:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:20:17,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:20:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-28 00:20:17,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3604336043360434 [2024-06-28 00:20:17,038 INFO L175 Difference]: Start difference. First operand has 256 places, 381 transitions, 6936 flow. Second operand 9 states and 133 transitions. [2024-06-28 00:20:17,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 405 transitions, 7925 flow [2024-06-28 00:20:18,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 405 transitions, 7785 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:20:18,653 INFO L231 Difference]: Finished difference. Result has 259 places, 383 transitions, 6979 flow [2024-06-28 00:20:18,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6798, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6979, PETRI_PLACES=259, PETRI_TRANSITIONS=383} [2024-06-28 00:20:18,654 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 217 predicate places. [2024-06-28 00:20:18,654 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 383 transitions, 6979 flow [2024-06-28 00:20:18,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:18,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:18,654 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 00:20:18,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:20:18,655 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:18,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1896838209, now seen corresponding path program 5 times [2024-06-28 00:20:18,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:18,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891682497] [2024-06-28 00:20:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:18,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:24,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:24,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891682497] [2024-06-28 00:20:24,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891682497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:24,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:24,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:20:24,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840576194] [2024-06-28 00:20:24,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:24,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:20:24,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:24,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:20:24,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:20:24,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:20:24,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 383 transitions, 6979 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:24,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:24,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:20:24,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:27,138 INFO L124 PetriNetUnfolderBase]: 4827/7810 cut-off events. [2024-06-28 00:20:27,138 INFO L125 PetriNetUnfolderBase]: For 436724/436726 co-relation queries the response was YES. [2024-06-28 00:20:27,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62134 conditions, 7810 events. 4827/7810 cut-off events. For 436724/436726 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 50318 event pairs, 1693 based on Foata normal form. 6/7811 useless extension candidates. Maximal degree in co-relation 62015. Up to 7204 conditions per place. [2024-06-28 00:20:27,253 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 336 selfloop transitions, 70 changer transitions 0/410 dead transitions. [2024-06-28 00:20:27,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 410 transitions, 8007 flow [2024-06-28 00:20:27,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:20:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:20:27,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-28 00:20:27,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35772357723577236 [2024-06-28 00:20:27,255 INFO L175 Difference]: Start difference. First operand has 259 places, 383 transitions, 6979 flow. Second operand 9 states and 132 transitions. [2024-06-28 00:20:27,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 410 transitions, 8007 flow [2024-06-28 00:20:28,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 410 transitions, 7875 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 00:20:28,687 INFO L231 Difference]: Finished difference. Result has 264 places, 386 transitions, 7092 flow [2024-06-28 00:20:28,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6847, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7092, PETRI_PLACES=264, PETRI_TRANSITIONS=386} [2024-06-28 00:20:28,688 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 222 predicate places. [2024-06-28 00:20:28,688 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 386 transitions, 7092 flow [2024-06-28 00:20:28,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:28,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:28,689 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 00:20:28,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:20:28,689 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:28,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:28,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1177151209, now seen corresponding path program 1 times [2024-06-28 00:20:28,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:28,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722072129] [2024-06-28 00:20:28,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:28,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:34,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:34,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722072129] [2024-06-28 00:20:34,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722072129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:34,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:34,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:20:34,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241649834] [2024-06-28 00:20:34,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:34,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:20:34,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:34,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:20:34,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:20:34,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:20:34,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 386 transitions, 7092 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:34,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:34,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:20:34,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:37,300 INFO L124 PetriNetUnfolderBase]: 4875/7905 cut-off events. [2024-06-28 00:20:37,300 INFO L125 PetriNetUnfolderBase]: For 464353/464362 co-relation queries the response was YES. [2024-06-28 00:20:37,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63188 conditions, 7905 events. 4875/7905 cut-off events. For 464353/464362 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 51475 event pairs, 2204 based on Foata normal form. 14/7912 useless extension candidates. Maximal degree in co-relation 63066. Up to 7242 conditions per place. [2024-06-28 00:20:37,437 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 379 selfloop transitions, 42 changer transitions 0/425 dead transitions. [2024-06-28 00:20:37,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 425 transitions, 8351 flow [2024-06-28 00:20:37,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:20:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:20:37,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 00:20:37,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40418118466898956 [2024-06-28 00:20:37,440 INFO L175 Difference]: Start difference. First operand has 264 places, 386 transitions, 7092 flow. Second operand 7 states and 116 transitions. [2024-06-28 00:20:37,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 425 transitions, 8351 flow [2024-06-28 00:20:39,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 425 transitions, 8123 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 00:20:39,350 INFO L231 Difference]: Finished difference. Result has 262 places, 388 transitions, 6978 flow [2024-06-28 00:20:39,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6864, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6978, PETRI_PLACES=262, PETRI_TRANSITIONS=388} [2024-06-28 00:20:39,351 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 220 predicate places. [2024-06-28 00:20:39,351 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 388 transitions, 6978 flow [2024-06-28 00:20:39,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:39,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:39,351 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 00:20:39,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:20:39,352 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:39,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:39,352 INFO L85 PathProgramCache]: Analyzing trace with hash -275576777, now seen corresponding path program 1 times [2024-06-28 00:20:39,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:39,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637915571] [2024-06-28 00:20:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:39,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:45,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:45,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637915571] [2024-06-28 00:20:45,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637915571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:45,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:45,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:20:45,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74895319] [2024-06-28 00:20:45,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:45,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:20:45,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:45,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:20:45,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:20:45,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:20:45,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 388 transitions, 6978 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:45,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:45,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:20:45,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:48,165 INFO L124 PetriNetUnfolderBase]: 4857/7877 cut-off events. [2024-06-28 00:20:48,165 INFO L125 PetriNetUnfolderBase]: For 469233/469242 co-relation queries the response was YES. [2024-06-28 00:20:48,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62553 conditions, 7877 events. 4857/7877 cut-off events. For 469233/469242 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 51281 event pairs, 2194 based on Foata normal form. 14/7884 useless extension candidates. Maximal degree in co-relation 62434. Up to 7234 conditions per place. [2024-06-28 00:20:48,286 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 378 selfloop transitions, 42 changer transitions 0/424 dead transitions. [2024-06-28 00:20:48,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 424 transitions, 8105 flow [2024-06-28 00:20:48,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:20:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:20:48,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 00:20:48,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40069686411149824 [2024-06-28 00:20:48,288 INFO L175 Difference]: Start difference. First operand has 262 places, 388 transitions, 6978 flow. Second operand 7 states and 115 transitions. [2024-06-28 00:20:48,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 424 transitions, 8105 flow [2024-06-28 00:20:49,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 424 transitions, 8057 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 00:20:49,722 INFO L231 Difference]: Finished difference. Result has 266 places, 388 transitions, 7018 flow [2024-06-28 00:20:49,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6930, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7018, PETRI_PLACES=266, PETRI_TRANSITIONS=388} [2024-06-28 00:20:49,723 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 224 predicate places. [2024-06-28 00:20:49,723 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 388 transitions, 7018 flow [2024-06-28 00:20:49,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:49,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:49,724 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 00:20:49,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:20:49,724 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:49,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:49,724 INFO L85 PathProgramCache]: Analyzing trace with hash 643348377, now seen corresponding path program 2 times [2024-06-28 00:20:49,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:49,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418127901] [2024-06-28 00:20:49,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:49,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:55,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:55,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418127901] [2024-06-28 00:20:55,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418127901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:55,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:55,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:20:55,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858163837] [2024-06-28 00:20:55,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:55,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:20:55,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:55,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:20:55,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:20:55,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:20:55,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 388 transitions, 7018 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:55,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:55,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:20:55,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:58,688 INFO L124 PetriNetUnfolderBase]: 4839/7851 cut-off events. [2024-06-28 00:20:58,688 INFO L125 PetriNetUnfolderBase]: For 474754/474763 co-relation queries the response was YES. [2024-06-28 00:20:58,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62527 conditions, 7851 events. 4839/7851 cut-off events. For 474754/474763 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 51082 event pairs, 2190 based on Foata normal form. 14/7858 useless extension candidates. Maximal degree in co-relation 62406. Up to 7168 conditions per place. [2024-06-28 00:20:58,790 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 376 selfloop transitions, 44 changer transitions 0/424 dead transitions. [2024-06-28 00:20:58,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 424 transitions, 8145 flow [2024-06-28 00:20:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:20:58,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:20:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 00:20:58,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397212543554007 [2024-06-28 00:20:58,792 INFO L175 Difference]: Start difference. First operand has 266 places, 388 transitions, 7018 flow. Second operand 7 states and 114 transitions. [2024-06-28 00:20:58,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 424 transitions, 8145 flow [2024-06-28 00:21:00,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 424 transitions, 8029 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 00:21:00,253 INFO L231 Difference]: Finished difference. Result has 267 places, 388 transitions, 6996 flow [2024-06-28 00:21:00,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6902, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6996, PETRI_PLACES=267, PETRI_TRANSITIONS=388} [2024-06-28 00:21:00,254 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-28 00:21:00,254 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 388 transitions, 6996 flow [2024-06-28 00:21:00,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:00,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:00,254 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, 1] [2024-06-28 00:21:00,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:21:00,254 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:00,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:00,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2044437504, now seen corresponding path program 1 times [2024-06-28 00:21:00,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:00,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567761724] [2024-06-28 00:21:00,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:00,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:04,707 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 00:21:04,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:04,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567761724] [2024-06-28 00:21:04,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567761724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:04,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:04,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:21:04,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608595757] [2024-06-28 00:21:04,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:04,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:21:04,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:21:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:21:04,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 00:21:04,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 388 transitions, 6996 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:04,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:04,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 00:21:04,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:07,529 INFO L124 PetriNetUnfolderBase]: 3824/6720 cut-off events. [2024-06-28 00:21:07,529 INFO L125 PetriNetUnfolderBase]: For 470823/471006 co-relation queries the response was YES. [2024-06-28 00:21:07,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55320 conditions, 6720 events. 3824/6720 cut-off events. For 470823/471006 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 47942 event pairs, 1359 based on Foata normal form. 23/6585 useless extension candidates. Maximal degree in co-relation 55198. Up to 4923 conditions per place. [2024-06-28 00:21:07,624 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 214 selfloop transitions, 56 changer transitions 0/418 dead transitions. [2024-06-28 00:21:07,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 418 transitions, 7644 flow [2024-06-28 00:21:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:21:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:21:07,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 00:21:07,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-28 00:21:07,626 INFO L175 Difference]: Start difference. First operand has 267 places, 388 transitions, 6996 flow. Second operand 9 states and 161 transitions. [2024-06-28 00:21:07,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 418 transitions, 7644 flow [2024-06-28 00:21:08,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 418 transitions, 7478 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:21:08,872 INFO L231 Difference]: Finished difference. Result has 269 places, 388 transitions, 6960 flow [2024-06-28 00:21:08,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6830, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6960, PETRI_PLACES=269, PETRI_TRANSITIONS=388} [2024-06-28 00:21:08,873 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 227 predicate places. [2024-06-28 00:21:08,873 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 388 transitions, 6960 flow [2024-06-28 00:21:08,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:08,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:08,873 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, 1] [2024-06-28 00:21:08,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:21:08,874 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:08,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:08,874 INFO L85 PathProgramCache]: Analyzing trace with hash -67783061, now seen corresponding path program 1 times [2024-06-28 00:21:08,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:08,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706658461] [2024-06-28 00:21:08,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:08,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:14,802 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 00:21:14,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:14,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706658461] [2024-06-28 00:21:14,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706658461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:14,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:14,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:21:14,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411316707] [2024-06-28 00:21:14,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:14,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:21:14,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:14,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:21:14,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:21:14,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:21:14,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 388 transitions, 6960 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:21:14,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:14,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:21:14,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:18,191 INFO L124 PetriNetUnfolderBase]: 4857/7877 cut-off events. [2024-06-28 00:21:18,191 INFO L125 PetriNetUnfolderBase]: For 474220/474273 co-relation queries the response was YES. [2024-06-28 00:21:18,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62170 conditions, 7877 events. 4857/7877 cut-off events. For 474220/474273 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 51233 event pairs, 1934 based on Foata normal form. 48/7917 useless extension candidates. Maximal degree in co-relation 62049. Up to 6945 conditions per place. [2024-06-28 00:21:18,299 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 305 selfloop transitions, 106 changer transitions 0/415 dead transitions. [2024-06-28 00:21:18,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 415 transitions, 7988 flow [2024-06-28 00:21:18,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:21:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:21:18,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 00:21:18,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-28 00:21:18,301 INFO L175 Difference]: Start difference. First operand has 269 places, 388 transitions, 6960 flow. Second operand 8 states and 130 transitions. [2024-06-28 00:21:18,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 415 transitions, 7988 flow [2024-06-28 00:21:19,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 415 transitions, 7861 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:21:19,619 INFO L231 Difference]: Finished difference. Result has 268 places, 390 transitions, 7138 flow [2024-06-28 00:21:19,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6833, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7138, PETRI_PLACES=268, PETRI_TRANSITIONS=390} [2024-06-28 00:21:19,620 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 226 predicate places. [2024-06-28 00:21:19,620 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 390 transitions, 7138 flow [2024-06-28 00:21:19,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:21:19,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:19,621 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, 1] [2024-06-28 00:21:19,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:21:19,621 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:19,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:19,622 INFO L85 PathProgramCache]: Analyzing trace with hash 586429172, now seen corresponding path program 1 times [2024-06-28 00:21:19,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:19,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684542780] [2024-06-28 00:21:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:19,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:26,475 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 00:21:26,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:26,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684542780] [2024-06-28 00:21:26,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684542780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:26,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:26,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:21:26,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982774808] [2024-06-28 00:21:26,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:26,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:21:26,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:26,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:21:26,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:21:26,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:21:26,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 390 transitions, 7138 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:21:26,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:26,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:21:26,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:30,158 INFO L124 PetriNetUnfolderBase]: 4968/8072 cut-off events. [2024-06-28 00:21:30,159 INFO L125 PetriNetUnfolderBase]: For 456296/456358 co-relation queries the response was YES. [2024-06-28 00:21:30,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63784 conditions, 8072 events. 4968/8072 cut-off events. For 456296/456358 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 52984 event pairs, 2103 based on Foata normal form. 44/8106 useless extension candidates. Maximal degree in co-relation 63663. Up to 6747 conditions per place. [2024-06-28 00:21:30,266 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 255 selfloop transitions, 217 changer transitions 0/476 dead transitions. [2024-06-28 00:21:30,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 476 transitions, 9556 flow [2024-06-28 00:21:30,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:21:30,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:21:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 00:21:30,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 00:21:30,285 INFO L175 Difference]: Start difference. First operand has 268 places, 390 transitions, 7138 flow. Second operand 10 states and 180 transitions. [2024-06-28 00:21:30,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 476 transitions, 9556 flow [2024-06-28 00:21:31,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 476 transitions, 9292 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 00:21:31,445 INFO L231 Difference]: Finished difference. Result has 275 places, 427 transitions, 8038 flow [2024-06-28 00:21:31,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6896, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8038, PETRI_PLACES=275, PETRI_TRANSITIONS=427} [2024-06-28 00:21:31,445 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 233 predicate places. [2024-06-28 00:21:31,446 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 427 transitions, 8038 flow [2024-06-28 00:21:31,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:21:31,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:31,446 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, 1] [2024-06-28 00:21:31,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:21:31,446 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:31,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:31,448 INFO L85 PathProgramCache]: Analyzing trace with hash 586727702, now seen corresponding path program 2 times [2024-06-28 00:21:31,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:31,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983063613] [2024-06-28 00:21:31,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:31,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:37,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:37,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983063613] [2024-06-28 00:21:37,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983063613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:37,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:37,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:21:37,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238077758] [2024-06-28 00:21:37,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:37,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:21:37,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:37,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:21:37,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:21:37,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:21:37,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 427 transitions, 8038 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:21:37,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:37,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:21:37,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:41,202 INFO L124 PetriNetUnfolderBase]: 5040/8169 cut-off events. [2024-06-28 00:21:41,203 INFO L125 PetriNetUnfolderBase]: For 474821/474874 co-relation queries the response was YES. [2024-06-28 00:21:41,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66685 conditions, 8169 events. 5040/8169 cut-off events. For 474821/474874 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 53642 event pairs, 2023 based on Foata normal form. 42/8203 useless extension candidates. Maximal degree in co-relation 66560. Up to 6816 conditions per place. [2024-06-28 00:21:41,316 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 258 selfloop transitions, 242 changer transitions 3/507 dead transitions. [2024-06-28 00:21:41,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 507 transitions, 10411 flow [2024-06-28 00:21:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:21:41,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:21:41,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 225 transitions. [2024-06-28 00:21:41,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42213883677298314 [2024-06-28 00:21:41,319 INFO L175 Difference]: Start difference. First operand has 275 places, 427 transitions, 8038 flow. Second operand 13 states and 225 transitions. [2024-06-28 00:21:41,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 507 transitions, 10411 flow [2024-06-28 00:21:42,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 507 transitions, 10171 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-28 00:21:42,705 INFO L231 Difference]: Finished difference. Result has 289 places, 450 transitions, 8798 flow [2024-06-28 00:21:42,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7822, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8798, PETRI_PLACES=289, PETRI_TRANSITIONS=450} [2024-06-28 00:21:42,706 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 247 predicate places. [2024-06-28 00:21:42,706 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 450 transitions, 8798 flow [2024-06-28 00:21:42,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:21:42,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:42,706 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, 1] [2024-06-28 00:21:42,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:21:42,707 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:42,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:42,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1159872110, now seen corresponding path program 1 times [2024-06-28 00:21:42,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:42,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689931539] [2024-06-28 00:21:42,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:42,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:49,558 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 00:21:49,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:49,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689931539] [2024-06-28 00:21:49,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689931539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:49,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:49,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:21:49,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421218634] [2024-06-28 00:21:49,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:49,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:21:49,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:49,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:21:49,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:21:49,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:21:49,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 450 transitions, 8798 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:49,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:49,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:21:49,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:53,147 INFO L124 PetriNetUnfolderBase]: 4924/7987 cut-off events. [2024-06-28 00:21:53,147 INFO L125 PetriNetUnfolderBase]: For 498951/498989 co-relation queries the response was YES. [2024-06-28 00:21:53,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66777 conditions, 7987 events. 4924/7987 cut-off events. For 498951/498989 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 52195 event pairs, 2062 based on Foata normal form. 26/7999 useless extension candidates. Maximal degree in co-relation 66647. Up to 7014 conditions per place. [2024-06-28 00:21:53,277 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 289 selfloop transitions, 173 changer transitions 0/466 dead transitions. [2024-06-28 00:21:53,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 466 transitions, 9890 flow [2024-06-28 00:21:53,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:21:53,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:21:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 00:21:53,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414634146341464 [2024-06-28 00:21:53,279 INFO L175 Difference]: Start difference. First operand has 289 places, 450 transitions, 8798 flow. Second operand 8 states and 126 transitions. [2024-06-28 00:21:53,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 466 transitions, 9890 flow [2024-06-28 00:21:54,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 466 transitions, 9347 flow, removed 91 selfloop flow, removed 6 redundant places. [2024-06-28 00:21:54,972 INFO L231 Difference]: Finished difference. Result has 291 places, 450 transitions, 8634 flow [2024-06-28 00:21:54,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8257, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8634, PETRI_PLACES=291, PETRI_TRANSITIONS=450} [2024-06-28 00:21:54,973 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 249 predicate places. [2024-06-28 00:21:54,973 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 450 transitions, 8634 flow [2024-06-28 00:21:54,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:54,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:54,973 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, 1] [2024-06-28 00:21:54,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:21:54,974 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:54,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:54,974 INFO L85 PathProgramCache]: Analyzing trace with hash -993782206, now seen corresponding path program 3 times [2024-06-28 00:21:54,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:54,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561363157] [2024-06-28 00:21:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:54,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:00,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:00,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561363157] [2024-06-28 00:22:00,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561363157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:00,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:00,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:22:00,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042041721] [2024-06-28 00:22:00,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:00,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:22:00,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:00,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:22:00,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:22:00,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:22:00,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 450 transitions, 8634 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:22:00,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:00,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:22:00,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:04,327 INFO L124 PetriNetUnfolderBase]: 4964/8047 cut-off events. [2024-06-28 00:22:04,327 INFO L125 PetriNetUnfolderBase]: For 499844/499882 co-relation queries the response was YES. [2024-06-28 00:22:04,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67052 conditions, 8047 events. 4964/8047 cut-off events. For 499844/499882 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 52640 event pairs, 2013 based on Foata normal form. 16/8049 useless extension candidates. Maximal degree in co-relation 66921. Up to 6712 conditions per place. [2024-06-28 00:22:04,436 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 230 selfloop transitions, 266 changer transitions 0/500 dead transitions. [2024-06-28 00:22:04,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 500 transitions, 10580 flow [2024-06-28 00:22:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:22:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:22:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-28 00:22:04,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40447154471544716 [2024-06-28 00:22:04,439 INFO L175 Difference]: Start difference. First operand has 291 places, 450 transitions, 8634 flow. Second operand 12 states and 199 transitions. [2024-06-28 00:22:04,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 500 transitions, 10580 flow [2024-06-28 00:22:06,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 500 transitions, 10079 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 00:22:06,128 INFO L231 Difference]: Finished difference. Result has 297 places, 467 transitions, 9091 flow [2024-06-28 00:22:06,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8147, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9091, PETRI_PLACES=297, PETRI_TRANSITIONS=467} [2024-06-28 00:22:06,130 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 255 predicate places. [2024-06-28 00:22:06,130 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 467 transitions, 9091 flow [2024-06-28 00:22:06,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:22:06,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:06,131 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, 1] [2024-06-28 00:22:06,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:22:06,131 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:06,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:06,131 INFO L85 PathProgramCache]: Analyzing trace with hash -993776626, now seen corresponding path program 4 times [2024-06-28 00:22:06,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:06,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41093069] [2024-06-28 00:22:06,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:06,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:12,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41093069] [2024-06-28 00:22:12,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41093069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:12,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:12,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:22:12,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661143833] [2024-06-28 00:22:12,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:12,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:22:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:12,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:22:12,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:22:12,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:22:12,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 467 transitions, 9091 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:22:12,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:12,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:22:12,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:16,633 INFO L124 PetriNetUnfolderBase]: 5017/8135 cut-off events. [2024-06-28 00:22:16,633 INFO L125 PetriNetUnfolderBase]: For 516863/516901 co-relation queries the response was YES. [2024-06-28 00:22:16,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68301 conditions, 8135 events. 5017/8135 cut-off events. For 516863/516901 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 53321 event pairs, 2107 based on Foata normal form. 16/8137 useless extension candidates. Maximal degree in co-relation 68168. Up to 6765 conditions per place. [2024-06-28 00:22:16,900 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 228 selfloop transitions, 293 changer transitions 0/525 dead transitions. [2024-06-28 00:22:16,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 525 transitions, 11182 flow [2024-06-28 00:22:16,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:22:16,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:22:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-06-28 00:22:16,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3943089430894309 [2024-06-28 00:22:16,902 INFO L175 Difference]: Start difference. First operand has 297 places, 467 transitions, 9091 flow. Second operand 12 states and 194 transitions. [2024-06-28 00:22:16,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 525 transitions, 11182 flow [2024-06-28 00:22:17,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 525 transitions, 10612 flow, removed 80 selfloop flow, removed 6 redundant places. [2024-06-28 00:22:17,975 INFO L231 Difference]: Finished difference. Result has 306 places, 492 transitions, 9672 flow [2024-06-28 00:22:17,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8613, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9672, PETRI_PLACES=306, PETRI_TRANSITIONS=492} [2024-06-28 00:22:17,976 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-28 00:22:17,976 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 492 transitions, 9672 flow [2024-06-28 00:22:17,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:22:17,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:17,977 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, 1] [2024-06-28 00:22:17,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:22:17,977 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:17,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1290466763, now seen corresponding path program 2 times [2024-06-28 00:22:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:17,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962054987] [2024-06-28 00:22:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:17,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:25,699 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 00:22:25,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:25,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962054987] [2024-06-28 00:22:25,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962054987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:25,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:25,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:22:25,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626789082] [2024-06-28 00:22:25,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:25,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:22:25,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:25,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:22:25,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:22:25,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:22:25,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 492 transitions, 9672 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:22:25,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:25,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:22:25,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:29,247 INFO L124 PetriNetUnfolderBase]: 5032/8158 cut-off events. [2024-06-28 00:22:29,248 INFO L125 PetriNetUnfolderBase]: For 540022/540060 co-relation queries the response was YES. [2024-06-28 00:22:29,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68804 conditions, 8158 events. 5032/8158 cut-off events. For 540022/540060 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 53465 event pairs, 2075 based on Foata normal form. 22/8166 useless extension candidates. Maximal degree in co-relation 68667. Up to 7045 conditions per place. [2024-06-28 00:22:29,392 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 331 selfloop transitions, 178 changer transitions 0/513 dead transitions. [2024-06-28 00:22:29,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 513 transitions, 10904 flow [2024-06-28 00:22:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:22:29,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:22:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 00:22:29,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-28 00:22:29,403 INFO L175 Difference]: Start difference. First operand has 306 places, 492 transitions, 9672 flow. Second operand 8 states and 130 transitions. [2024-06-28 00:22:29,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 513 transitions, 10904 flow [2024-06-28 00:22:31,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 513 transitions, 10444 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 00:22:31,383 INFO L231 Difference]: Finished difference. Result has 308 places, 493 transitions, 9607 flow [2024-06-28 00:22:31,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9212, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9607, PETRI_PLACES=308, PETRI_TRANSITIONS=493} [2024-06-28 00:22:31,384 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 266 predicate places. [2024-06-28 00:22:31,384 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 493 transitions, 9607 flow [2024-06-28 00:22:31,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:22:31,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:31,385 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, 1] [2024-06-28 00:22:31,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:22:31,385 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:31,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:31,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1266512954, now seen corresponding path program 5 times [2024-06-28 00:22:31,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:31,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201875086] [2024-06-28 00:22:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:31,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:36,501 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 00:22:36,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:36,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201875086] [2024-06-28 00:22:36,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201875086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:36,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:36,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:22:36,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114526148] [2024-06-28 00:22:36,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:36,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:22:36,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:36,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:22:36,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:22:36,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:22:36,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 493 transitions, 9607 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:22:36,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:36,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:22:36,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:39,999 INFO L124 PetriNetUnfolderBase]: 5020/8124 cut-off events. [2024-06-28 00:22:40,000 INFO L125 PetriNetUnfolderBase]: For 538420/538422 co-relation queries the response was YES. [2024-06-28 00:22:40,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68511 conditions, 8124 events. 5020/8124 cut-off events. For 538420/538422 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 52790 event pairs, 1549 based on Foata normal form. 4/8123 useless extension candidates. Maximal degree in co-relation 68373. Up to 6599 conditions per place. [2024-06-28 00:22:40,105 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 227 selfloop transitions, 301 changer transitions 1/533 dead transitions. [2024-06-28 00:22:40,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 533 transitions, 11336 flow [2024-06-28 00:22:40,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 00:22:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 00:22:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 225 transitions. [2024-06-28 00:22:40,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-06-28 00:22:40,129 INFO L175 Difference]: Start difference. First operand has 308 places, 493 transitions, 9607 flow. Second operand 15 states and 225 transitions. [2024-06-28 00:22:40,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 533 transitions, 11336 flow [2024-06-28 00:22:41,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 533 transitions, 10971 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:22:41,966 INFO L231 Difference]: Finished difference. Result has 317 places, 493 transitions, 9850 flow [2024-06-28 00:22:41,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9242, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9850, PETRI_PLACES=317, PETRI_TRANSITIONS=493} [2024-06-28 00:22:41,966 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-06-28 00:22:41,966 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 493 transitions, 9850 flow [2024-06-28 00:22:41,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:22:41,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:41,967 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, 1, 1] [2024-06-28 00:22:41,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:22:41,967 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:41,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:41,968 INFO L85 PathProgramCache]: Analyzing trace with hash -549615410, now seen corresponding path program 1 times [2024-06-28 00:22:41,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:41,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457909791] [2024-06-28 00:22:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:41,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:47,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:47,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:47,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457909791] [2024-06-28 00:22:47,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457909791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:47,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:47,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:22:47,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481059563] [2024-06-28 00:22:47,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:47,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:22:47,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:47,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:22:47,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:22:47,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:22:47,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 493 transitions, 9850 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:22:47,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:47,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:22:47,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:50,716 INFO L124 PetriNetUnfolderBase]: 4984/8075 cut-off events. [2024-06-28 00:22:50,717 INFO L125 PetriNetUnfolderBase]: For 564198/564202 co-relation queries the response was YES. [2024-06-28 00:22:50,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67135 conditions, 8075 events. 4984/8075 cut-off events. For 564198/564202 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 52443 event pairs, 1326 based on Foata normal form. 44/8118 useless extension candidates. Maximal degree in co-relation 66996. Up to 5234 conditions per place. [2024-06-28 00:22:50,824 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 463 selfloop transitions, 76 changer transitions 20/563 dead transitions. [2024-06-28 00:22:50,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 563 transitions, 11724 flow [2024-06-28 00:22:50,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:22:50,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:22:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 211 transitions. [2024-06-28 00:22:50,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42886178861788615 [2024-06-28 00:22:50,826 INFO L175 Difference]: Start difference. First operand has 317 places, 493 transitions, 9850 flow. Second operand 12 states and 211 transitions. [2024-06-28 00:22:50,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 563 transitions, 11724 flow [2024-06-28 00:22:52,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 563 transitions, 11053 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-06-28 00:22:52,353 INFO L231 Difference]: Finished difference. Result has 317 places, 486 transitions, 9248 flow [2024-06-28 00:22:52,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9179, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9248, PETRI_PLACES=317, PETRI_TRANSITIONS=486} [2024-06-28 00:22:52,354 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-06-28 00:22:52,354 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 486 transitions, 9248 flow [2024-06-28 00:22:52,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:22:52,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:52,354 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, 1, 1] [2024-06-28 00:22:52,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:22:52,355 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:52,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:52,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1128334714, now seen corresponding path program 2 times [2024-06-28 00:22:52,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:52,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930698227] [2024-06-28 00:22:52,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:52,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:57,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:57,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930698227] [2024-06-28 00:22:57,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930698227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:57,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:57,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:22:57,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522913947] [2024-06-28 00:22:57,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:57,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:22:57,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:57,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:22:57,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:22:58,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:22:58,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 486 transitions, 9248 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:22:58,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:58,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:22:58,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:01,436 INFO L124 PetriNetUnfolderBase]: 5008/8119 cut-off events. [2024-06-28 00:23:01,436 INFO L125 PetriNetUnfolderBase]: For 606006/606010 co-relation queries the response was YES. [2024-06-28 00:23:01,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69630 conditions, 8119 events. 5008/8119 cut-off events. For 606006/606010 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 52844 event pairs, 1323 based on Foata normal form. 12/8130 useless extension candidates. Maximal degree in co-relation 69490. Up to 5234 conditions per place. [2024-06-28 00:23:01,585 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 459 selfloop transitions, 63 changer transitions 25/551 dead transitions. [2024-06-28 00:23:01,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 551 transitions, 11067 flow [2024-06-28 00:23:01,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:23:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:23:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-28 00:23:01,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43680709534368073 [2024-06-28 00:23:01,587 INFO L175 Difference]: Start difference. First operand has 317 places, 486 transitions, 9248 flow. Second operand 11 states and 197 transitions. [2024-06-28 00:23:01,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 551 transitions, 11067 flow [2024-06-28 00:23:03,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 551 transitions, 10893 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-28 00:23:03,632 INFO L231 Difference]: Finished difference. Result has 316 places, 472 transitions, 9009 flow [2024-06-28 00:23:03,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9092, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9009, PETRI_PLACES=316, PETRI_TRANSITIONS=472} [2024-06-28 00:23:03,633 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 274 predicate places. [2024-06-28 00:23:03,633 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 472 transitions, 9009 flow [2024-06-28 00:23:03,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:23:03,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:03,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:03,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:23:03,636 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:03,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:03,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1468728316, now seen corresponding path program 3 times [2024-06-28 00:23:03,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:03,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548886894] [2024-06-28 00:23:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:03,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:09,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:09,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548886894] [2024-06-28 00:23:09,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548886894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:09,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:09,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:23:09,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295222865] [2024-06-28 00:23:09,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:09,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:23:09,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:09,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:23:09,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:23:09,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:23:09,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 472 transitions, 9009 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:23:09,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:09,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:23:09,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:12,074 INFO L124 PetriNetUnfolderBase]: 4708/7625 cut-off events. [2024-06-28 00:23:12,074 INFO L125 PetriNetUnfolderBase]: For 570986/570990 co-relation queries the response was YES. [2024-06-28 00:23:12,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63783 conditions, 7625 events. 4708/7625 cut-off events. For 570986/570990 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 49307 event pairs, 1362 based on Foata normal form. 52/7676 useless extension candidates. Maximal degree in co-relation 63644. Up to 5805 conditions per place. [2024-06-28 00:23:12,185 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 444 selfloop transitions, 53 changer transitions 24/525 dead transitions. [2024-06-28 00:23:12,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 525 transitions, 10551 flow [2024-06-28 00:23:12,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:23:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:23:12,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 00:23:12,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292682926829268 [2024-06-28 00:23:12,187 INFO L175 Difference]: Start difference. First operand has 316 places, 472 transitions, 9009 flow. Second operand 10 states and 176 transitions. [2024-06-28 00:23:12,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 525 transitions, 10551 flow [2024-06-28 00:23:13,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 525 transitions, 10273 flow, removed 8 selfloop flow, removed 17 redundant places. [2024-06-28 00:23:13,607 INFO L231 Difference]: Finished difference. Result has 307 places, 461 transitions, 8684 flow [2024-06-28 00:23:13,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8735, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8684, PETRI_PLACES=307, PETRI_TRANSITIONS=461} [2024-06-28 00:23:13,608 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 265 predicate places. [2024-06-28 00:23:13,608 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 461 transitions, 8684 flow [2024-06-28 00:23:13,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:23:13,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:13,609 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, 1, 1] [2024-06-28 00:23:13,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:23:13,609 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:13,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:13,609 INFO L85 PathProgramCache]: Analyzing trace with hash 783878546, now seen corresponding path program 4 times [2024-06-28 00:23:13,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:13,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629767469] [2024-06-28 00:23:13,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:13,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:19,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:19,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629767469] [2024-06-28 00:23:19,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629767469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:19,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:19,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:23:19,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091018723] [2024-06-28 00:23:19,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:19,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:23:19,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:19,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:23:19,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:23:19,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:23:19,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 461 transitions, 8684 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:23:19,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:19,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:23:19,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:22,368 INFO L124 PetriNetUnfolderBase]: 4284/6961 cut-off events. [2024-06-28 00:23:22,369 INFO L125 PetriNetUnfolderBase]: For 490385/490389 co-relation queries the response was YES. [2024-06-28 00:23:22,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56758 conditions, 6961 events. 4284/6961 cut-off events. For 490385/490389 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 44512 event pairs, 1282 based on Foata normal form. 58/7018 useless extension candidates. Maximal degree in co-relation 56624. Up to 6212 conditions per place. [2024-06-28 00:23:22,470 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 422 selfloop transitions, 44 changer transitions 34/504 dead transitions. [2024-06-28 00:23:22,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 504 transitions, 10018 flow [2024-06-28 00:23:22,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:23:22,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:23:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 00:23:22,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-28 00:23:22,472 INFO L175 Difference]: Start difference. First operand has 307 places, 461 transitions, 8684 flow. Second operand 10 states and 165 transitions. [2024-06-28 00:23:22,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 504 transitions, 10018 flow [2024-06-28 00:23:23,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 504 transitions, 9904 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 00:23:23,659 INFO L231 Difference]: Finished difference. Result has 302 places, 444 transitions, 8404 flow [2024-06-28 00:23:23,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8574, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8404, PETRI_PLACES=302, PETRI_TRANSITIONS=444} [2024-06-28 00:23:23,659 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 260 predicate places. [2024-06-28 00:23:23,660 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 444 transitions, 8404 flow [2024-06-28 00:23:23,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:23:23,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:23,660 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, 1, 1] [2024-06-28 00:23:23,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:23:23,660 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:23,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:23,661 INFO L85 PathProgramCache]: Analyzing trace with hash -715734272, now seen corresponding path program 5 times [2024-06-28 00:23:23,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:23,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636574594] [2024-06-28 00:23:23,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:23,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:29,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:29,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636574594] [2024-06-28 00:23:29,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636574594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:29,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:29,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:23:29,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062759447] [2024-06-28 00:23:29,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:29,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:23:29,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:29,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:23:29,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:23:29,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:23:29,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 444 transitions, 8404 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:23:29,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:29,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:23:29,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:32,131 INFO L124 PetriNetUnfolderBase]: 4145/6727 cut-off events. [2024-06-28 00:23:32,132 INFO L125 PetriNetUnfolderBase]: For 403191/403194 co-relation queries the response was YES. [2024-06-28 00:23:32,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54942 conditions, 6727 events. 4145/6727 cut-off events. For 403191/403194 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 42701 event pairs, 1191 based on Foata normal form. 13/6739 useless extension candidates. Maximal degree in co-relation 54831. Up to 6106 conditions per place. [2024-06-28 00:23:32,207 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 428 selfloop transitions, 36 changer transitions 22/490 dead transitions. [2024-06-28 00:23:32,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 490 transitions, 9802 flow [2024-06-28 00:23:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:23:32,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:23:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-06-28 00:23:32,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-06-28 00:23:32,209 INFO L175 Difference]: Start difference. First operand has 302 places, 444 transitions, 8404 flow. Second operand 12 states and 180 transitions. [2024-06-28 00:23:32,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 490 transitions, 9802 flow [2024-06-28 00:23:33,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 490 transitions, 9648 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-06-28 00:23:33,204 INFO L231 Difference]: Finished difference. Result has 294 places, 431 transitions, 8116 flow [2024-06-28 00:23:33,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8274, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8116, PETRI_PLACES=294, PETRI_TRANSITIONS=431} [2024-06-28 00:23:33,205 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-28 00:23:33,205 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 431 transitions, 8116 flow [2024-06-28 00:23:33,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:23:33,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:33,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:33,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:23:33,206 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:33,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:33,206 INFO L85 PathProgramCache]: Analyzing trace with hash 927769076, now seen corresponding path program 6 times [2024-06-28 00:23:33,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:33,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209779402] [2024-06-28 00:23:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:33,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:39,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:39,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209779402] [2024-06-28 00:23:39,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209779402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:39,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:39,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:23:39,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433111282] [2024-06-28 00:23:39,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:39,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:23:39,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:39,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:23:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:23:39,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:23:39,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 431 transitions, 8116 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:23:39,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:39,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:23:39,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:42,317 INFO L124 PetriNetUnfolderBase]: 3960/6452 cut-off events. [2024-06-28 00:23:42,317 INFO L125 PetriNetUnfolderBase]: For 364212/364215 co-relation queries the response was YES. [2024-06-28 00:23:42,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52243 conditions, 6452 events. 3960/6452 cut-off events. For 364212/364215 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 40712 event pairs, 1150 based on Foata normal form. 13/6464 useless extension candidates. Maximal degree in co-relation 52135. Up to 6076 conditions per place. [2024-06-28 00:23:42,414 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 405 selfloop transitions, 22 changer transitions 36/467 dead transitions. [2024-06-28 00:23:42,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 467 transitions, 9243 flow [2024-06-28 00:23:42,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:23:42,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:23:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-28 00:23:42,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35920177383592017 [2024-06-28 00:23:42,416 INFO L175 Difference]: Start difference. First operand has 294 places, 431 transitions, 8116 flow. Second operand 11 states and 162 transitions. [2024-06-28 00:23:42,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 467 transitions, 9243 flow [2024-06-28 00:23:43,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 467 transitions, 9131 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-28 00:23:43,538 INFO L231 Difference]: Finished difference. Result has 290 places, 413 transitions, 7741 flow [2024-06-28 00:23:43,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8010, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7741, PETRI_PLACES=290, PETRI_TRANSITIONS=413} [2024-06-28 00:23:43,539 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 248 predicate places. [2024-06-28 00:23:43,539 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 413 transitions, 7741 flow [2024-06-28 00:23:43,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:23:43,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:43,539 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, 1, 1] [2024-06-28 00:23:43,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:23:43,540 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:43,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:43,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1114663562, now seen corresponding path program 7 times [2024-06-28 00:23:43,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:43,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939907741] [2024-06-28 00:23:43,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:43,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:49,796 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 00:23:49,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:49,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939907741] [2024-06-28 00:23:49,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939907741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:49,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:49,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:23:49,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405856598] [2024-06-28 00:23:49,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:49,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:23:49,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:49,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:23:49,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:23:49,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:23:49,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 413 transitions, 7741 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:23:49,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:49,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:23:49,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:52,178 INFO L124 PetriNetUnfolderBase]: 3828/6199 cut-off events. [2024-06-28 00:23:52,179 INFO L125 PetriNetUnfolderBase]: For 335715/335731 co-relation queries the response was YES. [2024-06-28 00:23:52,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49670 conditions, 6199 events. 3828/6199 cut-off events. For 335715/335731 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 38707 event pairs, 1058 based on Foata normal form. 10/6208 useless extension candidates. Maximal degree in co-relation 49563. Up to 5765 conditions per place. [2024-06-28 00:23:52,265 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 394 selfloop transitions, 42 changer transitions 14/454 dead transitions. [2024-06-28 00:23:52,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 454 transitions, 8935 flow [2024-06-28 00:23:52,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:23:52,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:23:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 00:23:52,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35698447893569846 [2024-06-28 00:23:52,266 INFO L175 Difference]: Start difference. First operand has 290 places, 413 transitions, 7741 flow. Second operand 11 states and 161 transitions. [2024-06-28 00:23:52,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 454 transitions, 8935 flow [2024-06-28 00:23:53,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 454 transitions, 8659 flow, removed 28 selfloop flow, removed 18 redundant places. [2024-06-28 00:23:53,198 INFO L231 Difference]: Finished difference. Result has 269 places, 407 transitions, 7471 flow [2024-06-28 00:23:53,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7471, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7471, PETRI_PLACES=269, PETRI_TRANSITIONS=407} [2024-06-28 00:23:53,199 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 227 predicate places. [2024-06-28 00:23:53,199 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 407 transitions, 7471 flow [2024-06-28 00:23:53,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:23:53,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:53,199 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, 1, 1] [2024-06-28 00:23:53,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:23:53,199 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:53,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:53,200 INFO L85 PathProgramCache]: Analyzing trace with hash -842994914, now seen corresponding path program 1 times [2024-06-28 00:23:53,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:53,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318947447] [2024-06-28 00:23:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:53,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:58,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:58,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318947447] [2024-06-28 00:23:58,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318947447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:58,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:58,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:23:58,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593685857] [2024-06-28 00:23:58,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:58,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:23:58,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:58,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:23:58,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:23:58,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:23:58,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 407 transitions, 7471 flow. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:58,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:58,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:23:58,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:00,668 INFO L124 PetriNetUnfolderBase]: 3782/6107 cut-off events. [2024-06-28 00:24:00,669 INFO L125 PetriNetUnfolderBase]: For 313654/313718 co-relation queries the response was YES. [2024-06-28 00:24:00,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49074 conditions, 6107 events. 3782/6107 cut-off events. For 313654/313718 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 37737 event pairs, 752 based on Foata normal form. 34/6133 useless extension candidates. Maximal degree in co-relation 48973. Up to 4810 conditions per place. [2024-06-28 00:24:00,736 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 342 selfloop transitions, 96 changer transitions 0/442 dead transitions. [2024-06-28 00:24:00,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 442 transitions, 8741 flow [2024-06-28 00:24:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:00,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:00,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 00:24:00,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-28 00:24:00,738 INFO L175 Difference]: Start difference. First operand has 269 places, 407 transitions, 7471 flow. Second operand 8 states and 129 transitions. [2024-06-28 00:24:00,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 442 transitions, 8741 flow [2024-06-28 00:24:01,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 442 transitions, 8616 flow, removed 15 selfloop flow, removed 15 redundant places. [2024-06-28 00:24:01,422 INFO L231 Difference]: Finished difference. Result has 257 places, 413 transitions, 7726 flow [2024-06-28 00:24:01,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7358, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7726, PETRI_PLACES=257, PETRI_TRANSITIONS=413} [2024-06-28 00:24:01,423 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 215 predicate places. [2024-06-28 00:24:01,423 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 413 transitions, 7726 flow [2024-06-28 00:24:01,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:01,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:01,423 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, 1, 1] [2024-06-28 00:24:01,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:24:01,423 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:01,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:01,424 INFO L85 PathProgramCache]: Analyzing trace with hash -484190214, now seen corresponding path program 1 times [2024-06-28 00:24:01,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:01,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133655360] [2024-06-28 00:24:01,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:01,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:07,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:07,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133655360] [2024-06-28 00:24:07,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133655360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:07,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:07,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:24:07,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160000737] [2024-06-28 00:24:07,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:07,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:24:07,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:07,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:24:07,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:24:07,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:24:07,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 413 transitions, 7726 flow. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:07,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:07,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:24:07,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:09,954 INFO L124 PetriNetUnfolderBase]: 3777/6100 cut-off events. [2024-06-28 00:24:09,955 INFO L125 PetriNetUnfolderBase]: For 288563/288627 co-relation queries the response was YES. [2024-06-28 00:24:10,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49096 conditions, 6100 events. 3777/6100 cut-off events. For 288563/288627 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 37692 event pairs, 797 based on Foata normal form. 34/6126 useless extension candidates. Maximal degree in co-relation 48999. Up to 4808 conditions per place. [2024-06-28 00:24:10,051 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 343 selfloop transitions, 98 changer transitions 0/445 dead transitions. [2024-06-28 00:24:10,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 445 transitions, 8962 flow [2024-06-28 00:24:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:10,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:10,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 00:24:10,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-28 00:24:10,054 INFO L175 Difference]: Start difference. First operand has 257 places, 413 transitions, 7726 flow. Second operand 8 states and 129 transitions. [2024-06-28 00:24:10,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 445 transitions, 8962 flow [2024-06-28 00:24:11,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 445 transitions, 8838 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 00:24:11,126 INFO L231 Difference]: Finished difference. Result has 261 places, 416 transitions, 7867 flow [2024-06-28 00:24:11,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7602, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7867, PETRI_PLACES=261, PETRI_TRANSITIONS=416} [2024-06-28 00:24:11,127 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-06-28 00:24:11,128 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 416 transitions, 7867 flow [2024-06-28 00:24:11,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:11,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:11,128 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, 1, 1] [2024-06-28 00:24:11,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:24:11,128 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:11,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:11,129 INFO L85 PathProgramCache]: Analyzing trace with hash -484190400, now seen corresponding path program 1 times [2024-06-28 00:24:11,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:11,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136107926] [2024-06-28 00:24:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:11,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:19,374 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 00:24:19,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:19,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136107926] [2024-06-28 00:24:19,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136107926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:19,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:19,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:24:19,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770036772] [2024-06-28 00:24:19,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:19,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:24:19,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:19,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:24:19,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:24:19,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:24:19,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 416 transitions, 7867 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:19,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:19,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:24:19,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:22,674 INFO L124 PetriNetUnfolderBase]: 3905/6336 cut-off events. [2024-06-28 00:24:22,675 INFO L125 PetriNetUnfolderBase]: For 348285/348349 co-relation queries the response was YES. [2024-06-28 00:24:22,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51158 conditions, 6336 events. 3905/6336 cut-off events. For 348285/348349 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 39633 event pairs, 806 based on Foata normal form. 74/6402 useless extension candidates. Maximal degree in co-relation 51059. Up to 5068 conditions per place. [2024-06-28 00:24:22,787 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 331 selfloop transitions, 86 changer transitions 30/451 dead transitions. [2024-06-28 00:24:22,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 451 transitions, 9065 flow [2024-06-28 00:24:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:24:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:24:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:24:22,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780487804878049 [2024-06-28 00:24:22,790 INFO L175 Difference]: Start difference. First operand has 261 places, 416 transitions, 7867 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:24:22,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 451 transitions, 9065 flow [2024-06-28 00:24:23,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 451 transitions, 8901 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 00:24:24,000 INFO L231 Difference]: Finished difference. Result has 266 places, 392 transitions, 7163 flow [2024-06-28 00:24:24,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7703, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7163, PETRI_PLACES=266, PETRI_TRANSITIONS=392} [2024-06-28 00:24:24,010 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 224 predicate places. [2024-06-28 00:24:24,010 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 392 transitions, 7163 flow [2024-06-28 00:24:24,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:24,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:24,010 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, 1, 1] [2024-06-28 00:24:24,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:24:24,011 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:24,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:24,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1228027542, now seen corresponding path program 2 times [2024-06-28 00:24:24,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:24,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622937164] [2024-06-28 00:24:24,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:24,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:30,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:30,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622937164] [2024-06-28 00:24:30,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622937164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:30,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:30,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:24:30,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429426844] [2024-06-28 00:24:30,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:30,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:24:30,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:30,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:24:30,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:24:30,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:24:30,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 392 transitions, 7163 flow. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:30,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:30,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:24:30,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:33,820 INFO L124 PetriNetUnfolderBase]: 3679/5952 cut-off events. [2024-06-28 00:24:33,821 INFO L125 PetriNetUnfolderBase]: For 315571/315603 co-relation queries the response was YES. [2024-06-28 00:24:33,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48269 conditions, 5952 events. 3679/5952 cut-off events. For 315571/315603 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 36687 event pairs, 839 based on Foata normal form. 28/5972 useless extension candidates. Maximal degree in co-relation 48169. Up to 5163 conditions per place. [2024-06-28 00:24:33,918 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 339 selfloop transitions, 78 changer transitions 0/421 dead transitions. [2024-06-28 00:24:33,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 421 transitions, 8235 flow [2024-06-28 00:24:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:33,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:33,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 00:24:33,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871951219512195 [2024-06-28 00:24:33,920 INFO L175 Difference]: Start difference. First operand has 266 places, 392 transitions, 7163 flow. Second operand 8 states and 127 transitions. [2024-06-28 00:24:33,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 421 transitions, 8235 flow [2024-06-28 00:24:35,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 421 transitions, 7999 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 00:24:35,019 INFO L231 Difference]: Finished difference. Result has 264 places, 396 transitions, 7210 flow [2024-06-28 00:24:35,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6927, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7210, PETRI_PLACES=264, PETRI_TRANSITIONS=396} [2024-06-28 00:24:35,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 222 predicate places. [2024-06-28 00:24:35,030 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 396 transitions, 7210 flow [2024-06-28 00:24:35,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:35,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:35,030 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, 1, 1] [2024-06-28 00:24:35,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:24:35,031 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:35,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:35,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1839001436, now seen corresponding path program 8 times [2024-06-28 00:24:35,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:35,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758419639] [2024-06-28 00:24:35,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:35,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:41,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:41,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758419639] [2024-06-28 00:24:41,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758419639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:41,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:41,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:24:41,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925785032] [2024-06-28 00:24:41,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:41,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:24:41,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:24:41,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:24:41,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:24:41,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 396 transitions, 7210 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:24:41,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:41,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:24:41,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:44,321 INFO L124 PetriNetUnfolderBase]: 3614/5841 cut-off events. [2024-06-28 00:24:44,321 INFO L125 PetriNetUnfolderBase]: For 299824/299840 co-relation queries the response was YES. [2024-06-28 00:24:44,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47277 conditions, 5841 events. 3614/5841 cut-off events. For 299824/299840 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 35809 event pairs, 1022 based on Foata normal form. 10/5850 useless extension candidates. Maximal degree in co-relation 47177. Up to 5401 conditions per place. [2024-06-28 00:24:44,428 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 387 selfloop transitions, 23 changer transitions 23/437 dead transitions. [2024-06-28 00:24:44,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 437 transitions, 8359 flow [2024-06-28 00:24:44,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:24:44,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:24:44,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 00:24:44,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35698447893569846 [2024-06-28 00:24:44,429 INFO L175 Difference]: Start difference. First operand has 264 places, 396 transitions, 7210 flow. Second operand 11 states and 161 transitions. [2024-06-28 00:24:44,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 437 transitions, 8359 flow [2024-06-28 00:24:45,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 437 transitions, 8178 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 00:24:45,347 INFO L231 Difference]: Finished difference. Result has 269 places, 386 transitions, 6892 flow [2024-06-28 00:24:45,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7031, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6892, PETRI_PLACES=269, PETRI_TRANSITIONS=386} [2024-06-28 00:24:45,361 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 227 predicate places. [2024-06-28 00:24:45,361 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 386 transitions, 6892 flow [2024-06-28 00:24:45,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:24:45,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:45,361 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, 1, 1] [2024-06-28 00:24:45,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:24:45,362 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:45,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:45,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1466379084, now seen corresponding path program 2 times [2024-06-28 00:24:45,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:45,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285458696] [2024-06-28 00:24:45,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:45,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:53,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:53,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285458696] [2024-06-28 00:24:53,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285458696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:53,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:53,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:24:53,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496955896] [2024-06-28 00:24:53,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:53,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:24:53,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:24:53,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:24:53,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:24:53,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 386 transitions, 6892 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:53,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:53,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:24:53,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:55,605 INFO L124 PetriNetUnfolderBase]: 3486/5641 cut-off events. [2024-06-28 00:24:55,605 INFO L125 PetriNetUnfolderBase]: For 306843/306859 co-relation queries the response was YES. [2024-06-28 00:24:55,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46110 conditions, 5641 events. 3486/5641 cut-off events. For 306843/306859 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 34397 event pairs, 936 based on Foata normal form. 6/5646 useless extension candidates. Maximal degree in co-relation 46009. Up to 5165 conditions per place. [2024-06-28 00:24:55,701 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 394 selfloop transitions, 32 changer transitions 0/430 dead transitions. [2024-06-28 00:24:55,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 430 transitions, 8156 flow [2024-06-28 00:24:55,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:24:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:24:55,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-28 00:24:55,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.352549889135255 [2024-06-28 00:24:55,716 INFO L175 Difference]: Start difference. First operand has 269 places, 386 transitions, 6892 flow. Second operand 11 states and 159 transitions. [2024-06-28 00:24:55,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 430 transitions, 8156 flow [2024-06-28 00:24:56,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 430 transitions, 8010 flow, removed 15 selfloop flow, removed 14 redundant places. [2024-06-28 00:24:56,586 INFO L231 Difference]: Finished difference. Result has 260 places, 391 transitions, 6943 flow [2024-06-28 00:24:56,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6756, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6943, PETRI_PLACES=260, PETRI_TRANSITIONS=391} [2024-06-28 00:24:56,587 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 218 predicate places. [2024-06-28 00:24:56,587 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 391 transitions, 6943 flow [2024-06-28 00:24:56,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:56,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:56,588 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, 1, 1] [2024-06-28 00:24:56,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:24:56,588 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:56,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:56,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1466499054, now seen corresponding path program 3 times [2024-06-28 00:24:56,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:56,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525305630] [2024-06-28 00:24:56,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:56,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:04,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:04,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525305630] [2024-06-28 00:25:04,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525305630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:04,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:04,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:25:04,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077119700] [2024-06-28 00:25:04,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:04,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:25:04,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:04,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:25:04,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:25:04,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:25:04,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 391 transitions, 6943 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:04,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:04,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:25:04,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:07,876 INFO L124 PetriNetUnfolderBase]: 3473/5616 cut-off events. [2024-06-28 00:25:07,876 INFO L125 PetriNetUnfolderBase]: For 279831/279863 co-relation queries the response was YES. [2024-06-28 00:25:07,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45317 conditions, 5616 events. 3473/5616 cut-off events. For 279831/279863 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 34087 event pairs, 777 based on Foata normal form. 18/5626 useless extension candidates. Maximal degree in co-relation 45217. Up to 4847 conditions per place. [2024-06-28 00:25:07,972 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 326 selfloop transitions, 87 changer transitions 0/417 dead transitions. [2024-06-28 00:25:07,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 417 transitions, 7947 flow [2024-06-28 00:25:07,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:25:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:25:07,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 00:25:07,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3685636856368564 [2024-06-28 00:25:07,974 INFO L175 Difference]: Start difference. First operand has 260 places, 391 transitions, 6943 flow. Second operand 9 states and 136 transitions. [2024-06-28 00:25:07,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 417 transitions, 7947 flow [2024-06-28 00:25:08,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 417 transitions, 7803 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 00:25:08,813 INFO L231 Difference]: Finished difference. Result has 261 places, 391 transitions, 6983 flow [2024-06-28 00:25:08,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6799, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6983, PETRI_PLACES=261, PETRI_TRANSITIONS=391} [2024-06-28 00:25:08,817 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-06-28 00:25:08,818 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 391 transitions, 6983 flow [2024-06-28 00:25:08,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:08,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:08,818 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, 1, 1] [2024-06-28 00:25:08,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:25:08,818 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:08,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:08,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2101273222, now seen corresponding path program 3 times [2024-06-28 00:25:08,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:08,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660635958] [2024-06-28 00:25:08,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:08,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:15,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:15,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660635958] [2024-06-28 00:25:15,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660635958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:15,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:15,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:25:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510888043] [2024-06-28 00:25:15,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:15,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:25:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:15,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:25:15,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:25:15,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:25:15,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 391 transitions, 6983 flow. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:15,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:15,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:25:15,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:18,702 INFO L124 PetriNetUnfolderBase]: 3514/5679 cut-off events. [2024-06-28 00:25:18,703 INFO L125 PetriNetUnfolderBase]: For 290662/290694 co-relation queries the response was YES. [2024-06-28 00:25:18,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46228 conditions, 5679 events. 3514/5679 cut-off events. For 290662/290694 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 34551 event pairs, 712 based on Foata normal form. 14/5685 useless extension candidates. Maximal degree in co-relation 46127. Up to 4448 conditions per place. [2024-06-28 00:25:18,795 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 328 selfloop transitions, 91 changer transitions 0/423 dead transitions. [2024-06-28 00:25:18,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 423 transitions, 8173 flow [2024-06-28 00:25:18,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:25:18,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:25:18,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 00:25:18,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871951219512195 [2024-06-28 00:25:18,797 INFO L175 Difference]: Start difference. First operand has 261 places, 391 transitions, 6983 flow. Second operand 8 states and 127 transitions. [2024-06-28 00:25:18,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 423 transitions, 8173 flow [2024-06-28 00:25:19,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 423 transitions, 8024 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 00:25:19,646 INFO L231 Difference]: Finished difference. Result has 262 places, 395 transitions, 7113 flow [2024-06-28 00:25:19,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6834, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7113, PETRI_PLACES=262, PETRI_TRANSITIONS=395} [2024-06-28 00:25:19,647 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 220 predicate places. [2024-06-28 00:25:19,647 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 395 transitions, 7113 flow [2024-06-28 00:25:19,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:19,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:19,648 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, 1, 1] [2024-06-28 00:25:19,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:25:19,648 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:19,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:19,648 INFO L85 PathProgramCache]: Analyzing trace with hash 999437003, now seen corresponding path program 1 times [2024-06-28 00:25:19,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:19,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472635128] [2024-06-28 00:25:19,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:19,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:28,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:28,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472635128] [2024-06-28 00:25:28,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472635128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:28,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:28,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:25:28,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342063] [2024-06-28 00:25:28,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:28,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:25:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:28,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:25:28,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:25:28,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:25:28,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 395 transitions, 7113 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:28,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:28,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:25:28,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:31,562 INFO L124 PetriNetUnfolderBase]: 3531/5699 cut-off events. [2024-06-28 00:25:31,562 INFO L125 PetriNetUnfolderBase]: For 309515/309547 co-relation queries the response was YES. [2024-06-28 00:25:31,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47047 conditions, 5699 events. 3531/5699 cut-off events. For 309515/309547 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 34688 event pairs, 879 based on Foata normal form. 17/5708 useless extension candidates. Maximal degree in co-relation 46945. Up to 4487 conditions per place. [2024-06-28 00:25:31,664 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 216 selfloop transitions, 221 changer transitions 1/442 dead transitions. [2024-06-28 00:25:31,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 442 transitions, 8754 flow [2024-06-28 00:25:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:25:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:25:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 200 transitions. [2024-06-28 00:25:31,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37523452157598497 [2024-06-28 00:25:31,689 INFO L175 Difference]: Start difference. First operand has 262 places, 395 transitions, 7113 flow. Second operand 13 states and 200 transitions. [2024-06-28 00:25:31,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 442 transitions, 8754 flow [2024-06-28 00:25:32,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 442 transitions, 8592 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 00:25:32,715 INFO L231 Difference]: Finished difference. Result has 271 places, 401 transitions, 7527 flow [2024-06-28 00:25:32,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6971, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7527, PETRI_PLACES=271, PETRI_TRANSITIONS=401} [2024-06-28 00:25:32,715 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 229 predicate places. [2024-06-28 00:25:32,716 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 401 transitions, 7527 flow [2024-06-28 00:25:32,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:32,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:32,716 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, 1, 1] [2024-06-28 00:25:32,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:25:32,716 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:32,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:32,717 INFO L85 PathProgramCache]: Analyzing trace with hash 367422294, now seen corresponding path program 2 times [2024-06-28 00:25:32,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:32,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079851586] [2024-06-28 00:25:32,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:32,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:40,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:40,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079851586] [2024-06-28 00:25:40,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079851586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:40,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:40,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:25:40,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642083223] [2024-06-28 00:25:40,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:40,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:25:40,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:40,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:25:40,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:25:40,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:25:40,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 401 transitions, 7527 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:40,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:40,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:25:40,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:42,718 INFO L124 PetriNetUnfolderBase]: 3572/5733 cut-off events. [2024-06-28 00:25:42,719 INFO L125 PetriNetUnfolderBase]: For 313245/313277 co-relation queries the response was YES. [2024-06-28 00:25:42,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48206 conditions, 5733 events. 3572/5733 cut-off events. For 313245/313277 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 34851 event pairs, 874 based on Foata normal form. 14/5728 useless extension candidates. Maximal degree in co-relation 48102. Up to 4612 conditions per place. [2024-06-28 00:25:42,804 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 294 selfloop transitions, 143 changer transitions 0/441 dead transitions. [2024-06-28 00:25:42,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 441 transitions, 8885 flow [2024-06-28 00:25:42,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:25:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:25:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 00:25:42,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878048780487805 [2024-06-28 00:25:42,807 INFO L175 Difference]: Start difference. First operand has 271 places, 401 transitions, 7527 flow. Second operand 10 states and 159 transitions. [2024-06-28 00:25:42,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 441 transitions, 8885 flow [2024-06-28 00:25:43,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 441 transitions, 8419 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-28 00:25:43,727 INFO L231 Difference]: Finished difference. Result has 270 places, 404 transitions, 7418 flow [2024-06-28 00:25:43,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7061, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7418, PETRI_PLACES=270, PETRI_TRANSITIONS=404} [2024-06-28 00:25:43,728 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 228 predicate places. [2024-06-28 00:25:43,728 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 404 transitions, 7418 flow [2024-06-28 00:25:43,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:43,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:43,729 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, 1, 1] [2024-06-28 00:25:43,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:25:43,729 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:43,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:43,730 INFO L85 PathProgramCache]: Analyzing trace with hash 367482744, now seen corresponding path program 3 times [2024-06-28 00:25:43,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:43,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259422700] [2024-06-28 00:25:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:43,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:51,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:51,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259422700] [2024-06-28 00:25:51,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259422700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:51,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:51,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:25:51,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578580262] [2024-06-28 00:25:51,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:51,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:25:51,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:25:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:25:51,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:25:51,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 404 transitions, 7418 flow. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:51,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:51,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:25:51,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:54,724 INFO L124 PetriNetUnfolderBase]: 3573/5765 cut-off events. [2024-06-28 00:25:54,724 INFO L125 PetriNetUnfolderBase]: For 320344/320376 co-relation queries the response was YES. [2024-06-28 00:25:54,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48217 conditions, 5765 events. 3573/5765 cut-off events. For 320344/320376 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 35201 event pairs, 923 based on Foata normal form. 14/5771 useless extension candidates. Maximal degree in co-relation 48112. Up to 4881 conditions per place. [2024-06-28 00:25:54,824 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 279 selfloop transitions, 154 changer transitions 0/437 dead transitions. [2024-06-28 00:25:54,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 437 transitions, 8650 flow [2024-06-28 00:25:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:25:54,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:25:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 00:25:54,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712737127371274 [2024-06-28 00:25:54,826 INFO L175 Difference]: Start difference. First operand has 270 places, 404 transitions, 7418 flow. Second operand 9 states and 137 transitions. [2024-06-28 00:25:54,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 437 transitions, 8650 flow [2024-06-28 00:25:55,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 437 transitions, 8443 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 00:25:55,808 INFO L231 Difference]: Finished difference. Result has 274 places, 417 transitions, 7802 flow [2024-06-28 00:25:55,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7219, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7802, PETRI_PLACES=274, PETRI_TRANSITIONS=417} [2024-06-28 00:25:55,808 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 232 predicate places. [2024-06-28 00:25:55,808 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 417 transitions, 7802 flow [2024-06-28 00:25:55,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:55,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:55,809 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, 1, 1] [2024-06-28 00:25:55,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:25:55,809 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:55,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:55,810 INFO L85 PathProgramCache]: Analyzing trace with hash 652522164, now seen corresponding path program 4 times [2024-06-28 00:25:55,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:55,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581431058] [2024-06-28 00:25:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:55,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:02,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:02,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:02,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581431058] [2024-06-28 00:26:02,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581431058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:02,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:02,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:26:02,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432025699] [2024-06-28 00:26:02,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:02,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:26:02,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:02,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:26:02,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:26:03,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:26:03,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 417 transitions, 7802 flow. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:03,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:03,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:26:03,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:05,199 INFO L124 PetriNetUnfolderBase]: 3614/5836 cut-off events. [2024-06-28 00:26:05,199 INFO L125 PetriNetUnfolderBase]: For 339408/339440 co-relation queries the response was YES. [2024-06-28 00:26:05,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49749 conditions, 5836 events. 3614/5836 cut-off events. For 339408/339440 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 35693 event pairs, 819 based on Foata normal form. 14/5838 useless extension candidates. Maximal degree in co-relation 49641. Up to 4699 conditions per place. [2024-06-28 00:26:05,278 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 291 selfloop transitions, 159 changer transitions 0/454 dead transitions. [2024-06-28 00:26:05,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 454 transitions, 9179 flow [2024-06-28 00:26:05,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:26:05,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:26:05,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 00:26:05,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010840108401084 [2024-06-28 00:26:05,279 INFO L175 Difference]: Start difference. First operand has 274 places, 417 transitions, 7802 flow. Second operand 9 states and 148 transitions. [2024-06-28 00:26:05,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 454 transitions, 9179 flow [2024-06-28 00:26:06,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 454 transitions, 8958 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 00:26:06,066 INFO L231 Difference]: Finished difference. Result has 280 places, 421 transitions, 8022 flow [2024-06-28 00:26:06,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7581, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8022, PETRI_PLACES=280, PETRI_TRANSITIONS=421} [2024-06-28 00:26:06,067 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-28 00:26:06,067 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 421 transitions, 8022 flow [2024-06-28 00:26:06,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:06,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:06,067 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, 1, 1] [2024-06-28 00:26:06,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:26:06,068 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:06,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash 663950004, now seen corresponding path program 5 times [2024-06-28 00:26:06,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:06,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716268949] [2024-06-28 00:26:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:06,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:11,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:11,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716268949] [2024-06-28 00:26:11,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716268949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:11,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:11,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:26:11,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549023544] [2024-06-28 00:26:11,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:11,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:26:11,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:11,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:26:11,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:26:11,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:26:11,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 421 transitions, 8022 flow. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:11,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:11,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:26:11,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:13,907 INFO L124 PetriNetUnfolderBase]: 3663/5917 cut-off events. [2024-06-28 00:26:13,907 INFO L125 PetriNetUnfolderBase]: For 362243/362269 co-relation queries the response was YES. [2024-06-28 00:26:13,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51168 conditions, 5917 events. 3663/5917 cut-off events. For 362243/362269 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 36350 event pairs, 721 based on Foata normal form. 6/5909 useless extension candidates. Maximal degree in co-relation 51058. Up to 3512 conditions per place. [2024-06-28 00:26:13,978 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 279 selfloop transitions, 166 changer transitions 0/449 dead transitions. [2024-06-28 00:26:13,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 449 transitions, 9304 flow [2024-06-28 00:26:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:26:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:26:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 00:26:13,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780487804878049 [2024-06-28 00:26:13,979 INFO L175 Difference]: Start difference. First operand has 280 places, 421 transitions, 8022 flow. Second operand 8 states and 124 transitions. [2024-06-28 00:26:13,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 449 transitions, 9304 flow [2024-06-28 00:26:14,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 449 transitions, 9079 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 00:26:14,670 INFO L231 Difference]: Finished difference. Result has 285 places, 426 transitions, 8376 flow [2024-06-28 00:26:14,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7797, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8376, PETRI_PLACES=285, PETRI_TRANSITIONS=426} [2024-06-28 00:26:14,670 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 243 predicate places. [2024-06-28 00:26:14,670 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 426 transitions, 8376 flow [2024-06-28 00:26:14,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:14,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:14,671 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, 1, 1] [2024-06-28 00:26:14,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:26:14,671 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:14,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:14,672 INFO L85 PathProgramCache]: Analyzing trace with hash -199887072, now seen corresponding path program 4 times [2024-06-28 00:26:14,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:14,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366162027] [2024-06-28 00:26:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:14,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:21,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:21,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366162027] [2024-06-28 00:26:21,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366162027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:21,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:21,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:26:21,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265289057] [2024-06-28 00:26:21,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:21,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:26:21,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:21,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:26:21,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:26:21,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:26:21,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 426 transitions, 8376 flow. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:21,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:21,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:26:21,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:24,926 INFO L124 PetriNetUnfolderBase]: 3640/5874 cut-off events. [2024-06-28 00:26:24,926 INFO L125 PetriNetUnfolderBase]: For 375672/375704 co-relation queries the response was YES. [2024-06-28 00:26:25,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51784 conditions, 5874 events. 3640/5874 cut-off events. For 375672/375704 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 36070 event pairs, 914 based on Foata normal form. 22/5888 useless extension candidates. Maximal degree in co-relation 51671. Up to 4926 conditions per place. [2024-06-28 00:26:25,041 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 302 selfloop transitions, 146 changer transitions 0/452 dead transitions. [2024-06-28 00:26:25,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 452 transitions, 9526 flow [2024-06-28 00:26:25,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:26:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:26:25,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:26:25,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38482384823848237 [2024-06-28 00:26:25,043 INFO L175 Difference]: Start difference. First operand has 285 places, 426 transitions, 8376 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:26:25,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 452 transitions, 9526 flow [2024-06-28 00:26:26,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 452 transitions, 9328 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 00:26:26,311 INFO L231 Difference]: Finished difference. Result has 290 places, 426 transitions, 8488 flow [2024-06-28 00:26:26,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8178, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8488, PETRI_PLACES=290, PETRI_TRANSITIONS=426} [2024-06-28 00:26:26,312 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 248 predicate places. [2024-06-28 00:26:26,312 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 426 transitions, 8488 flow [2024-06-28 00:26:26,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:26,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:26,313 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, 1, 1] [2024-06-28 00:26:26,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:26:26,314 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:26,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:26,314 INFO L85 PathProgramCache]: Analyzing trace with hash -419756493, now seen corresponding path program 2 times [2024-06-28 00:26:26,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:26,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848450568] [2024-06-28 00:26:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:26,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:37,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:37,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848450568] [2024-06-28 00:26:37,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848450568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:37,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:37,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:26:37,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902420428] [2024-06-28 00:26:37,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:37,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:26:37,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:37,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:26:37,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:26:37,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:26:37,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 426 transitions, 8488 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:37,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:37,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:26:37,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:42,251 INFO L124 PetriNetUnfolderBase]: 3628/5858 cut-off events. [2024-06-28 00:26:42,251 INFO L125 PetriNetUnfolderBase]: For 372066/372098 co-relation queries the response was YES. [2024-06-28 00:26:42,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52007 conditions, 5858 events. 3628/5858 cut-off events. For 372066/372098 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 35985 event pairs, 908 based on Foata normal form. 16/5866 useless extension candidates. Maximal degree in co-relation 51892. Up to 4646 conditions per place. [2024-06-28 00:26:42,357 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 229 selfloop transitions, 229 changer transitions 1/463 dead transitions. [2024-06-28 00:26:42,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 463 transitions, 9936 flow [2024-06-28 00:26:42,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:26:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:26:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 199 transitions. [2024-06-28 00:26:42,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37335834896810505 [2024-06-28 00:26:42,359 INFO L175 Difference]: Start difference. First operand has 290 places, 426 transitions, 8488 flow. Second operand 13 states and 199 transitions. [2024-06-28 00:26:42,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 463 transitions, 9936 flow [2024-06-28 00:26:43,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 463 transitions, 9567 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 00:26:43,534 INFO L231 Difference]: Finished difference. Result has 295 places, 426 transitions, 8605 flow [2024-06-28 00:26:43,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8119, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8605, PETRI_PLACES=295, PETRI_TRANSITIONS=426} [2024-06-28 00:26:43,535 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 253 predicate places. [2024-06-28 00:26:43,535 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 426 transitions, 8605 flow [2024-06-28 00:26:43,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:43,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:43,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:43,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:26:43,536 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:43,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:43,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1272912788, now seen corresponding path program 5 times [2024-06-28 00:26:43,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:43,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122531041] [2024-06-28 00:26:43,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:43,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:51,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:51,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122531041] [2024-06-28 00:26:51,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122531041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:51,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:51,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:26:51,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480403260] [2024-06-28 00:26:51,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:51,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:26:51,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:51,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:26:51,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:26:51,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:26:51,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 426 transitions, 8605 flow. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:51,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:51,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:26:51,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:54,183 INFO L124 PetriNetUnfolderBase]: 3644/5856 cut-off events. [2024-06-28 00:26:54,183 INFO L125 PetriNetUnfolderBase]: For 392685/392717 co-relation queries the response was YES. [2024-06-28 00:26:54,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52235 conditions, 5856 events. 3644/5856 cut-off events. For 392685/392717 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 35907 event pairs, 912 based on Foata normal form. 28/5866 useless extension candidates. Maximal degree in co-relation 52119. Up to 4874 conditions per place. [2024-06-28 00:26:54,293 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 302 selfloop transitions, 140 changer transitions 10/456 dead transitions. [2024-06-28 00:26:54,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 456 transitions, 9784 flow [2024-06-28 00:26:54,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:26:54,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:26:54,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 00:26:54,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40853658536585363 [2024-06-28 00:26:54,295 INFO L175 Difference]: Start difference. First operand has 295 places, 426 transitions, 8605 flow. Second operand 8 states and 134 transitions. [2024-06-28 00:26:54,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 456 transitions, 9784 flow [2024-06-28 00:26:55,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 456 transitions, 9326 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-28 00:26:55,558 INFO L231 Difference]: Finished difference. Result has 291 places, 420 transitions, 8304 flow [2024-06-28 00:26:55,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8147, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8304, PETRI_PLACES=291, PETRI_TRANSITIONS=420} [2024-06-28 00:26:55,558 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 249 predicate places. [2024-06-28 00:26:55,559 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 420 transitions, 8304 flow [2024-06-28 00:26:55,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:55,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:55,559 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, 1, 1] [2024-06-28 00:26:55,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:26:55,559 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:55,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:55,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1040659458, now seen corresponding path program 9 times [2024-06-28 00:26:55,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:55,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778437748] [2024-06-28 00:26:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:55,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:02,981 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 00:27:02,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:02,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778437748] [2024-06-28 00:27:02,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778437748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:02,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:02,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:27:02,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767085678] [2024-06-28 00:27:02,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:02,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:27:02,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:02,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:27:02,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:27:03,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:27:03,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 420 transitions, 8304 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:27:03,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:03,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:27:03,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:06,516 INFO L124 PetriNetUnfolderBase]: 3760/6088 cut-off events. [2024-06-28 00:27:06,517 INFO L125 PetriNetUnfolderBase]: For 470902/470928 co-relation queries the response was YES. [2024-06-28 00:27:06,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53464 conditions, 6088 events. 3760/6088 cut-off events. For 470902/470928 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 37906 event pairs, 1034 based on Foata normal form. 58/6132 useless extension candidates. Maximal degree in co-relation 53347. Up to 4520 conditions per place. [2024-06-28 00:27:06,613 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 213 selfloop transitions, 232 changer transitions 6/455 dead transitions. [2024-06-28 00:27:06,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 455 transitions, 9794 flow [2024-06-28 00:27:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:27:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:27:06,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 00:27:06,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835920177383592 [2024-06-28 00:27:06,615 INFO L175 Difference]: Start difference. First operand has 291 places, 420 transitions, 8304 flow. Second operand 11 states and 173 transitions. [2024-06-28 00:27:06,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 455 transitions, 9794 flow [2024-06-28 00:27:07,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 455 transitions, 9472 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 00:27:07,676 INFO L231 Difference]: Finished difference. Result has 296 places, 421 transitions, 8543 flow [2024-06-28 00:27:07,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7982, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8543, PETRI_PLACES=296, PETRI_TRANSITIONS=421} [2024-06-28 00:27:07,676 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-06-28 00:27:07,677 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 421 transitions, 8543 flow [2024-06-28 00:27:07,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 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 00:27:07,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:07,677 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, 1, 1] [2024-06-28 00:27:07,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:27:07,677 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:07,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:07,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2083457236, now seen corresponding path program 6 times [2024-06-28 00:27:07,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:07,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580212061] [2024-06-28 00:27:07,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:07,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:15,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:15,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580212061] [2024-06-28 00:27:15,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580212061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:15,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:15,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:27:15,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354046962] [2024-06-28 00:27:15,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:15,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:27:15,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:15,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:27:15,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:27:15,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:27:15,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 421 transitions, 8543 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:15,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:15,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:27:15,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:18,149 INFO L124 PetriNetUnfolderBase]: 3789/6143 cut-off events. [2024-06-28 00:27:18,150 INFO L125 PetriNetUnfolderBase]: For 429269/429295 co-relation queries the response was YES. [2024-06-28 00:27:18,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54045 conditions, 6143 events. 3789/6143 cut-off events. For 429269/429295 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 38327 event pairs, 1036 based on Foata normal form. 32/6161 useless extension candidates. Maximal degree in co-relation 53927. Up to 5141 conditions per place. [2024-06-28 00:27:18,265 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 290 selfloop transitions, 149 changer transitions 0/443 dead transitions. [2024-06-28 00:27:18,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 443 transitions, 9751 flow [2024-06-28 00:27:18,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:27:18,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:27:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 00:27:18,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-28 00:27:18,267 INFO L175 Difference]: Start difference. First operand has 296 places, 421 transitions, 8543 flow. Second operand 8 states and 129 transitions. [2024-06-28 00:27:18,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 443 transitions, 9751 flow [2024-06-28 00:27:19,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 443 transitions, 9225 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 00:27:19,561 INFO L231 Difference]: Finished difference. Result has 295 places, 425 transitions, 8453 flow [2024-06-28 00:27:19,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8017, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8453, PETRI_PLACES=295, PETRI_TRANSITIONS=425} [2024-06-28 00:27:19,561 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 253 predicate places. [2024-06-28 00:27:19,562 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 425 transitions, 8453 flow [2024-06-28 00:27:19,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:19,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:19,562 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, 1, 1] [2024-06-28 00:27:19,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:27:19,562 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:19,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash 960667350, now seen corresponding path program 7 times [2024-06-28 00:27:19,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:19,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992391006] [2024-06-28 00:27:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:19,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:26,478 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 00:27:26,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:26,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992391006] [2024-06-28 00:27:26,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992391006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:26,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:26,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:27:26,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568851607] [2024-06-28 00:27:26,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:26,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:27:26,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:27:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:27:26,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:27:26,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 425 transitions, 8453 flow. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:26,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:26,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:27:26,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:29,308 INFO L124 PetriNetUnfolderBase]: 3845/6227 cut-off events. [2024-06-28 00:27:29,309 INFO L125 PetriNetUnfolderBase]: For 414341/414367 co-relation queries the response was YES. [2024-06-28 00:27:29,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54032 conditions, 6227 events. 3845/6227 cut-off events. For 414341/414367 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 38882 event pairs, 1036 based on Foata normal form. 20/6233 useless extension candidates. Maximal degree in co-relation 53913. Up to 4967 conditions per place. [2024-06-28 00:27:29,425 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 290 selfloop transitions, 158 changer transitions 0/452 dead transitions. [2024-06-28 00:27:29,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 452 transitions, 9842 flow [2024-06-28 00:27:29,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:27:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:27:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 00:27:29,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37073170731707317 [2024-06-28 00:27:29,427 INFO L175 Difference]: Start difference. First operand has 295 places, 425 transitions, 8453 flow. Second operand 10 states and 152 transitions. [2024-06-28 00:27:29,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 452 transitions, 9842 flow [2024-06-28 00:27:30,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 452 transitions, 9500 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 00:27:30,732 INFO L231 Difference]: Finished difference. Result has 299 places, 427 transitions, 8488 flow [2024-06-28 00:27:30,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8111, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8488, PETRI_PLACES=299, PETRI_TRANSITIONS=427} [2024-06-28 00:27:30,733 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 257 predicate places. [2024-06-28 00:27:30,733 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 427 transitions, 8488 flow [2024-06-28 00:27:30,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:30,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:30,733 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, 1, 1] [2024-06-28 00:27:30,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:27:30,734 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:30,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:30,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1996101824, now seen corresponding path program 4 times [2024-06-28 00:27:30,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:30,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025242667] [2024-06-28 00:27:30,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:30,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:38,530 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 00:27:38,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:38,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025242667] [2024-06-28 00:27:38,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025242667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:38,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:38,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:27:38,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185279988] [2024-06-28 00:27:38,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:38,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:27:38,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:38,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:27:38,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:27:38,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:27:38,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 427 transitions, 8488 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:38,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:38,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:27:38,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:41,940 INFO L124 PetriNetUnfolderBase]: 4153/6759 cut-off events. [2024-06-28 00:27:41,941 INFO L125 PetriNetUnfolderBase]: For 544812/544838 co-relation queries the response was YES. [2024-06-28 00:27:42,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59134 conditions, 6759 events. 4153/6759 cut-off events. For 544812/544838 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 43172 event pairs, 1137 based on Foata normal form. 46/6791 useless extension candidates. Maximal degree in co-relation 59014. Up to 4537 conditions per place. [2024-06-28 00:27:42,071 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 218 selfloop transitions, 238 changer transitions 12/472 dead transitions. [2024-06-28 00:27:42,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 472 transitions, 10310 flow [2024-06-28 00:27:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:27:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:27:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-28 00:27:42,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39227642276422764 [2024-06-28 00:27:42,074 INFO L175 Difference]: Start difference. First operand has 299 places, 427 transitions, 8488 flow. Second operand 12 states and 193 transitions. [2024-06-28 00:27:42,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 472 transitions, 10310 flow [2024-06-28 00:27:43,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 472 transitions, 10003 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:27:43,356 INFO L231 Difference]: Finished difference. Result has 305 places, 427 transitions, 8745 flow [2024-06-28 00:27:43,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8181, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8745, PETRI_PLACES=305, PETRI_TRANSITIONS=427} [2024-06-28 00:27:43,357 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 263 predicate places. [2024-06-28 00:27:43,357 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 427 transitions, 8745 flow [2024-06-28 00:27:43,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:43,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:43,357 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, 1, 1] [2024-06-28 00:27:43,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:27:43,358 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:43,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:43,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1996465671, now seen corresponding path program 3 times [2024-06-28 00:27:43,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:43,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466249202] [2024-06-28 00:27:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:43,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:50,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:50,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466249202] [2024-06-28 00:27:50,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466249202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:50,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:50,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:27:50,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857765163] [2024-06-28 00:27:50,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:50,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:27:50,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:50,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:27:50,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:27:50,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:27:50,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 427 transitions, 8745 flow. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:50,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:50,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:27:50,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:53,527 INFO L124 PetriNetUnfolderBase]: 4106/6682 cut-off events. [2024-06-28 00:27:53,527 INFO L125 PetriNetUnfolderBase]: For 498770/498796 co-relation queries the response was YES. [2024-06-28 00:27:53,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59495 conditions, 6682 events. 4106/6682 cut-off events. For 498770/498796 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 42502 event pairs, 1217 based on Foata normal form. 9/6677 useless extension candidates. Maximal degree in co-relation 59373. Up to 5443 conditions per place. [2024-06-28 00:27:53,654 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 227 selfloop transitions, 232 changer transitions 3/466 dead transitions. [2024-06-28 00:27:53,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 466 transitions, 10425 flow [2024-06-28 00:27:53,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:27:53,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:27:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 192 transitions. [2024-06-28 00:27:53,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602251407129456 [2024-06-28 00:27:53,656 INFO L175 Difference]: Start difference. First operand has 305 places, 427 transitions, 8745 flow. Second operand 13 states and 192 transitions. [2024-06-28 00:27:53,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 466 transitions, 10425 flow [2024-06-28 00:27:55,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 466 transitions, 9955 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-28 00:27:55,208 INFO L231 Difference]: Finished difference. Result has 308 places, 436 transitions, 8915 flow [2024-06-28 00:27:55,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8286, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8915, PETRI_PLACES=308, PETRI_TRANSITIONS=436} [2024-06-28 00:27:55,209 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 266 predicate places. [2024-06-28 00:27:55,209 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 436 transitions, 8915 flow [2024-06-28 00:27:55,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:55,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:55,209 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, 1, 1] [2024-06-28 00:27:55,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:27:55,210 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:55,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:55,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1996281531, now seen corresponding path program 4 times [2024-06-28 00:27:55,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:55,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300613488] [2024-06-28 00:27:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:55,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:03,019 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 00:28:03,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:03,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300613488] [2024-06-28 00:28:03,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300613488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:03,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:03,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:28:03,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870089084] [2024-06-28 00:28:03,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:03,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:28:03,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:03,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:28:03,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:28:03,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:28:03,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 436 transitions, 8915 flow. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:03,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:03,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:28:03,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:07,273 INFO L124 PetriNetUnfolderBase]: 4073/6638 cut-off events. [2024-06-28 00:28:07,274 INFO L125 PetriNetUnfolderBase]: For 482404/482430 co-relation queries the response was YES. [2024-06-28 00:28:07,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58274 conditions, 6638 events. 4073/6638 cut-off events. For 482404/482430 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 42265 event pairs, 1215 based on Foata normal form. 15/6639 useless extension candidates. Maximal degree in co-relation 58152. Up to 5415 conditions per place. [2024-06-28 00:28:07,401 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 226 selfloop transitions, 232 changer transitions 3/465 dead transitions. [2024-06-28 00:28:07,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 465 transitions, 10315 flow [2024-06-28 00:28:07,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:28:07,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:28:07,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 191 transitions. [2024-06-28 00:28:07,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35834896810506567 [2024-06-28 00:28:07,403 INFO L175 Difference]: Start difference. First operand has 308 places, 436 transitions, 8915 flow. Second operand 13 states and 191 transitions. [2024-06-28 00:28:07,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 465 transitions, 10315 flow [2024-06-28 00:28:08,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 465 transitions, 9705 flow, removed 73 selfloop flow, removed 11 redundant places. [2024-06-28 00:28:08,800 INFO L231 Difference]: Finished difference. Result has 310 places, 436 transitions, 8821 flow [2024-06-28 00:28:08,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8323, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8821, PETRI_PLACES=310, PETRI_TRANSITIONS=436} [2024-06-28 00:28:08,801 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 268 predicate places. [2024-06-28 00:28:08,801 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 436 transitions, 8821 flow [2024-06-28 00:28:08,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:08,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:08,802 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, 1, 1] [2024-06-28 00:28:08,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:28:08,802 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:08,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:08,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1582794944, now seen corresponding path program 5 times [2024-06-28 00:28:08,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:08,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622865767] [2024-06-28 00:28:08,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:08,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:16,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:16,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622865767] [2024-06-28 00:28:16,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622865767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:16,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:16,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:28:16,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869129738] [2024-06-28 00:28:16,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:16,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:28:16,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:16,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:28:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:28:16,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:28:16,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 436 transitions, 8821 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:16,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:16,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:28:16,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:20,246 INFO L124 PetriNetUnfolderBase]: 4433/7234 cut-off events. [2024-06-28 00:28:20,246 INFO L125 PetriNetUnfolderBase]: For 636969/636995 co-relation queries the response was YES. [2024-06-28 00:28:20,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64753 conditions, 7234 events. 4433/7234 cut-off events. For 636969/636995 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 46848 event pairs, 1221 based on Foata normal form. 46/7266 useless extension candidates. Maximal degree in co-relation 64630. Up to 3909 conditions per place. [2024-06-28 00:28:20,347 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 212 selfloop transitions, 243 changer transitions 22/481 dead transitions. [2024-06-28 00:28:20,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 481 transitions, 10534 flow [2024-06-28 00:28:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:28:20,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:28:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 00:28:20,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.401330376940133 [2024-06-28 00:28:20,349 INFO L175 Difference]: Start difference. First operand has 310 places, 436 transitions, 8821 flow. Second operand 11 states and 181 transitions. [2024-06-28 00:28:20,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 481 transitions, 10534 flow [2024-06-28 00:28:21,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 481 transitions, 10060 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 00:28:21,524 INFO L231 Difference]: Finished difference. Result has 310 places, 427 transitions, 8543 flow [2024-06-28 00:28:21,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8349, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8543, PETRI_PLACES=310, PETRI_TRANSITIONS=427} [2024-06-28 00:28:21,525 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 268 predicate places. [2024-06-28 00:28:21,525 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 427 transitions, 8543 flow [2024-06-28 00:28:21,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:21,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:21,525 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, 1, 1] [2024-06-28 00:28:21,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:28:21,526 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:21,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:21,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1582794758, now seen corresponding path program 8 times [2024-06-28 00:28:21,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:21,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522637238] [2024-06-28 00:28:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:21,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Killed by 15