./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe012_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe012_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe012_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:46:27,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:46:27,695 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:46:27,701 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:46:27,701 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:46:27,736 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:46:27,736 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:46:27,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:46:27,737 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:46:27,742 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:46:27,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:46:27,743 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:46:27,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:46:27,745 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:46:27,745 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:46:27,745 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:46:27,745 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:46:27,745 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:46:27,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:46:27,746 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:46:27,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:46:27,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:46:27,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:46:27,748 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:46:27,748 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:46:27,748 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:46:27,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:46:27,749 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:46:27,749 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:46:27,749 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:46:27,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:46:27,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:46:27,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:46:27,751 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:46:27,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:46:27,751 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:46:27,751 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:46:27,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:46:27,757 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:46:27,758 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:46:27,758 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:46:27,758 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:46:27,758 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:46:27,758 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:46:27,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:46:28,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:46:28,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:46:28,024 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:46:28,025 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:46:28,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe012_rmo.oepc.yml/witness.yml [2024-06-27 22:46:28,098 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:46:28,098 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:46:28,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_rmo.oepc.i [2024-06-27 22:46:29,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:46:29,420 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:46:29,421 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_rmo.oepc.i [2024-06-27 22:46:29,444 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26ded036/859146911fa54ab098f54f8623df3a3d/FLAGb17c632fe [2024-06-27 22:46:29,457 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26ded036/859146911fa54ab098f54f8623df3a3d [2024-06-27 22:46:29,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:46:29,460 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:46:29,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:46:29,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:46:29,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:46:29,466 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:46:28" (1/2) ... [2024-06-27 22:46:29,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f21fce and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:46:29, skipping insertion in model container [2024-06-27 22:46:29,467 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:46:28" (1/2) ... [2024-06-27 22:46:29,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b8f8a53 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:46:29, skipping insertion in model container [2024-06-27 22:46:29,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:46:29" (2/2) ... [2024-06-27 22:46:29,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f21fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29, skipping insertion in model container [2024-06-27 22:46:29,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:46:29" (2/2) ... [2024-06-27 22:46:29,472 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:46:29,491 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:46:29,492 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )y) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )z$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )z$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$read_delayed >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) [2024-06-27 22:46:29,492 INFO L97 edCorrectnessWitness]: Location invariant before [L842-L842] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )y) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )z$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )z$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$read_delayed >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) [2024-06-27 22:46:29,492 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )y) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )z$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )z$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$read_delayed >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) [2024-06-27 22:46:29,492 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:46:29,493 INFO L106 edCorrectnessWitness]: ghost_update [L837-L837] multithreaded = 1; [2024-06-27 22:46:29,541 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:46:29,662 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_rmo.oepc.i[993,1006] [2024-06-27 22:46:29,814 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:46:29,825 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:46:29,857 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_rmo.oepc.i[993,1006] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:46:29,953 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:46:29,991 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:46:29,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29 WrapperNode [2024-06-27 22:46:29,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:46:29,992 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:46:29,992 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:46:29,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:46:29,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29" (1/1) ... [2024-06-27 22:46:30,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29" (1/1) ... [2024-06-27 22:46:30,063 INFO L138 Inliner]: procedures = 175, calls = 58, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 144 [2024-06-27 22:46:30,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:46:30,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:46:30,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:46:30,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:46:30,074 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29" (1/1) ... [2024-06-27 22:46:30,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29" (1/1) ... [2024-06-27 22:46:30,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29" (1/1) ... [2024-06-27 22:46:30,123 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-27 22:46:30,123 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29" (1/1) ... [2024-06-27 22:46:30,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29" (1/1) ... [2024-06-27 22:46:30,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29" (1/1) ... [2024-06-27 22:46:30,150 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29" (1/1) ... [2024-06-27 22:46:30,153 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29" (1/1) ... [2024-06-27 22:46:30,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29" (1/1) ... [2024-06-27 22:46:30,160 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:46:30,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:46:30,177 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:46:30,177 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:46:30,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29" (1/1) ... [2024-06-27 22:46:30,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:46:30,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:46:30,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:46:30,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:46:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:46:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:46:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:46:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:46:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:46:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:46:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:46:30,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:46:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:46:30,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:46:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:46:30,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:46:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:46:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:46:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:46:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:46:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:46:30,281 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:46:30,430 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:46:30,432 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:46:30,971 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:46:30,971 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:46:31,325 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:46:31,325 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:46:31,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:46:31 BoogieIcfgContainer [2024-06-27 22:46:31,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:46:31,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:46:31,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:46:31,332 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:46:31,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:46:28" (1/4) ... [2024-06-27 22:46:31,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c61bd30 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:46:31, skipping insertion in model container [2024-06-27 22:46:31,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:46:29" (2/4) ... [2024-06-27 22:46:31,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c61bd30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:46:31, skipping insertion in model container [2024-06-27 22:46:31,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:46:29" (3/4) ... [2024-06-27 22:46:31,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c61bd30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:46:31, skipping insertion in model container [2024-06-27 22:46:31,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:46:31" (4/4) ... [2024-06-27 22:46:31,339 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_rmo.oepc.i [2024-06-27 22:46:31,354 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:46:31,355 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:46:31,355 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:46:31,434 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:46:31,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:46:31,500 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 22:46:31,500 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:46:31,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 22:46:31,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:46:31,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 41 transitions, 91 flow [2024-06-27 22:46:31,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:46:31,527 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;@7d0a4de0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:46:31,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:46:31,532 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:46:31,532 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:46:31,532 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:46:31,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:31,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:46:31,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:31,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:31,538 INFO L85 PathProgramCache]: Analyzing trace with hash 508586535, now seen corresponding path program 1 times [2024-06-27 22:46:31,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:31,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940554454] [2024-06-27 22:46:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:31,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:33,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:33,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940554454] [2024-06-27 22:46:33,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940554454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:33,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:33,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:46:33,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740578076] [2024-06-27 22:46:33,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:33,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:46:33,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:33,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:46:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:46:33,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:46:33,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:33,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:33,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:46:33,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:34,051 INFO L124 PetriNetUnfolderBase]: 2180/3287 cut-off events. [2024-06-27 22:46:34,052 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-27 22:46:34,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6540 conditions, 3287 events. 2180/3287 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 17667 event pairs, 1127 based on Foata normal form. 0/3156 useless extension candidates. Maximal degree in co-relation 6528. Up to 3182 conditions per place. [2024-06-27 22:46:34,068 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 45 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-06-27 22:46:34,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 231 flow [2024-06-27 22:46:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:46:34,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:46:34,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-27 22:46:34,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 22:46:34,078 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 91 flow. Second operand 3 states and 94 transitions. [2024-06-27 22:46:34,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 231 flow [2024-06-27 22:46:34,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:34,083 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 118 flow [2024-06-27 22:46:34,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-27 22:46:34,086 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-27 22:46:34,086 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 118 flow [2024-06-27 22:46:34,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:34,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:34,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:34,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:46:34,087 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:34,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:34,088 INFO L85 PathProgramCache]: Analyzing trace with hash -873952262, now seen corresponding path program 1 times [2024-06-27 22:46:34,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:34,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599467695] [2024-06-27 22:46:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:34,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:36,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:36,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599467695] [2024-06-27 22:46:36,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599467695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:36,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:36,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:46:36,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504232595] [2024-06-27 22:46:36,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:36,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:46:36,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:36,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:46:36,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:46:36,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:46:36,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:36,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:36,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:46:36,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:37,113 INFO L124 PetriNetUnfolderBase]: 2174/3279 cut-off events. [2024-06-27 22:46:37,114 INFO L125 PetriNetUnfolderBase]: For 547/555 co-relation queries the response was YES. [2024-06-27 22:46:37,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7303 conditions, 3279 events. 2174/3279 cut-off events. For 547/555 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 17718 event pairs, 849 based on Foata normal form. 6/3281 useless extension candidates. Maximal degree in co-relation 7291. Up to 3142 conditions per place. [2024-06-27 22:46:37,130 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 60 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2024-06-27 22:46:37,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 77 transitions, 330 flow [2024-06-27 22:46:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:46:37,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:46:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-27 22:46:37,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2024-06-27 22:46:37,132 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 118 flow. Second operand 4 states and 126 transitions. [2024-06-27 22:46:37,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 77 transitions, 330 flow [2024-06-27 22:46:37,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:46:37,134 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 154 flow [2024-06-27 22:46:37,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 22:46:37,136 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2024-06-27 22:46:37,136 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 154 flow [2024-06-27 22:46:37,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:37,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:37,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:37,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:46:37,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:37,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:37,142 INFO L85 PathProgramCache]: Analyzing trace with hash 180751218, now seen corresponding path program 1 times [2024-06-27 22:46:37,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:37,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285682985] [2024-06-27 22:46:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:37,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:40,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:40,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:40,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285682985] [2024-06-27 22:46:40,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285682985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:40,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:40,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:46:40,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690538696] [2024-06-27 22:46:40,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:40,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:46:40,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:40,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:46:40,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:46:40,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:46:40,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:40,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:40,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:46:40,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:42,089 INFO L124 PetriNetUnfolderBase]: 2769/4114 cut-off events. [2024-06-27 22:46:42,089 INFO L125 PetriNetUnfolderBase]: For 1777/1793 co-relation queries the response was YES. [2024-06-27 22:46:42,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9989 conditions, 4114 events. 2769/4114 cut-off events. For 1777/1793 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 21884 event pairs, 665 based on Foata normal form. 12/4119 useless extension candidates. Maximal degree in co-relation 9975. Up to 3890 conditions per place. [2024-06-27 22:46:42,112 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 87 selfloop transitions, 12 changer transitions 0/108 dead transitions. [2024-06-27 22:46:42,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 108 transitions, 502 flow [2024-06-27 22:46:42,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:42,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:42,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 22:46:42,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-27 22:46:42,118 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 154 flow. Second operand 6 states and 180 transitions. [2024-06-27 22:46:42,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 108 transitions, 502 flow [2024-06-27 22:46:42,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 108 transitions, 482 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:42,123 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 197 flow [2024-06-27 22:46:42,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-27 22:46:42,124 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2024-06-27 22:46:42,124 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 197 flow [2024-06-27 22:46:42,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:42,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:42,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:42,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:46:42,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:42,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:42,126 INFO L85 PathProgramCache]: Analyzing trace with hash 404779068, now seen corresponding path program 1 times [2024-06-27 22:46:42,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:42,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097864012] [2024-06-27 22:46:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:42,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:44,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:44,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097864012] [2024-06-27 22:46:44,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097864012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:44,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:44,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:46:44,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278519861] [2024-06-27 22:46:44,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:44,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:46:44,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:44,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:46:44,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:46:44,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:46:44,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:44,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:44,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:46:44,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:45,200 INFO L124 PetriNetUnfolderBase]: 2759/4107 cut-off events. [2024-06-27 22:46:45,201 INFO L125 PetriNetUnfolderBase]: For 3425/3445 co-relation queries the response was YES. [2024-06-27 22:46:45,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10793 conditions, 4107 events. 2759/4107 cut-off events. For 3425/3445 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 21929 event pairs, 824 based on Foata normal form. 14/4116 useless extension candidates. Maximal degree in co-relation 10776. Up to 3911 conditions per place. [2024-06-27 22:46:45,224 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 63 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-06-27 22:46:45,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 437 flow [2024-06-27 22:46:45,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:46:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:46:45,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-27 22:46:45,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-27 22:46:45,225 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 197 flow. Second operand 5 states and 130 transitions. [2024-06-27 22:46:45,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 437 flow [2024-06-27 22:46:45,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 408 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:45,233 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 237 flow [2024-06-27 22:46:45,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-06-27 22:46:45,234 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2024-06-27 22:46:45,234 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 237 flow [2024-06-27 22:46:45,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:45,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:45,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:45,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:46:45,236 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:45,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:45,236 INFO L85 PathProgramCache]: Analyzing trace with hash -336749149, now seen corresponding path program 1 times [2024-06-27 22:46:45,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:45,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470869103] [2024-06-27 22:46:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:45,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:47,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:47,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:47,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470869103] [2024-06-27 22:46:47,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470869103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:47,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:47,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:46:47,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772775630] [2024-06-27 22:46:47,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:47,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:46:47,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:47,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:46:47,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:46:47,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:46:47,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:47,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:47,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:46:47,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:48,979 INFO L124 PetriNetUnfolderBase]: 3289/4846 cut-off events. [2024-06-27 22:46:48,980 INFO L125 PetriNetUnfolderBase]: For 4904/4907 co-relation queries the response was YES. [2024-06-27 22:46:48,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13373 conditions, 4846 events. 3289/4846 cut-off events. For 4904/4907 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 25855 event pairs, 939 based on Foata normal form. 6/4850 useless extension candidates. Maximal degree in co-relation 13352. Up to 4597 conditions per place. [2024-06-27 22:46:49,011 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 85 selfloop transitions, 14 changer transitions 0/106 dead transitions. [2024-06-27 22:46:49,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 106 transitions, 585 flow [2024-06-27 22:46:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:49,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:49,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 22:46:49,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-27 22:46:49,015 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 237 flow. Second operand 6 states and 152 transitions. [2024-06-27 22:46:49,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 106 transitions, 585 flow [2024-06-27 22:46:49,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 106 transitions, 566 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 22:46:49,022 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 330 flow [2024-06-27 22:46:49,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-06-27 22:46:49,024 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2024-06-27 22:46:49,024 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 330 flow [2024-06-27 22:46:49,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:49,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:49,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:49,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:46:49,026 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:49,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:49,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1993886778, now seen corresponding path program 1 times [2024-06-27 22:46:49,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:49,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495907464] [2024-06-27 22:46:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:49,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:51,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:51,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495907464] [2024-06-27 22:46:51,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495907464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:51,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:51,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:51,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908991723] [2024-06-27 22:46:51,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:51,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:51,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:51,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:51,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:51,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:46:51,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 330 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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) [2024-06-27 22:46:51,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:51,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:46:51,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:53,475 INFO L124 PetriNetUnfolderBase]: 3281/4924 cut-off events. [2024-06-27 22:46:53,475 INFO L125 PetriNetUnfolderBase]: For 8239/8349 co-relation queries the response was YES. [2024-06-27 22:46:53,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14824 conditions, 4924 events. 3281/4924 cut-off events. For 8239/8349 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 27374 event pairs, 733 based on Foata normal form. 58/4954 useless extension candidates. Maximal degree in co-relation 14797. Up to 4400 conditions per place. [2024-06-27 22:46:53,495 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 99 selfloop transitions, 30 changer transitions 0/140 dead transitions. [2024-06-27 22:46:53,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 140 transitions, 811 flow [2024-06-27 22:46:53,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:46:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:46:53,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 22:46:53,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 22:46:53,497 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 330 flow. Second operand 9 states and 223 transitions. [2024-06-27 22:46:53,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 140 transitions, 811 flow [2024-06-27 22:46:53,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 140 transitions, 806 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 22:46:53,504 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 501 flow [2024-06-27 22:46:53,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=501, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-06-27 22:46:53,504 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2024-06-27 22:46:53,505 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 501 flow [2024-06-27 22:46:53,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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) [2024-06-27 22:46:53,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:53,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:53,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:46:53,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:53,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:53,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1993766808, now seen corresponding path program 2 times [2024-06-27 22:46:53,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:53,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957493977] [2024-06-27 22:46:53,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:53,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:55,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:55,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957493977] [2024-06-27 22:46:55,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957493977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:55,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:55,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:55,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005901911] [2024-06-27 22:46:55,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:55,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:55,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:55,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:56,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:46:56,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 501 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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) [2024-06-27 22:46:56,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:56,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:46:56,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:58,009 INFO L124 PetriNetUnfolderBase]: 3577/5336 cut-off events. [2024-06-27 22:46:58,010 INFO L125 PetriNetUnfolderBase]: For 13590/13638 co-relation queries the response was YES. [2024-06-27 22:46:58,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18508 conditions, 5336 events. 3577/5336 cut-off events. For 13590/13638 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 29590 event pairs, 780 based on Foata normal form. 14/5322 useless extension candidates. Maximal degree in co-relation 18475. Up to 4440 conditions per place. [2024-06-27 22:46:58,046 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 105 selfloop transitions, 48 changer transitions 0/164 dead transitions. [2024-06-27 22:46:58,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 164 transitions, 1116 flow [2024-06-27 22:46:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:46:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:46:58,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 22:46:58,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2024-06-27 22:46:58,049 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 501 flow. Second operand 9 states and 237 transitions. [2024-06-27 22:46:58,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 164 transitions, 1116 flow [2024-06-27 22:46:58,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 164 transitions, 1102 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 22:46:58,064 INFO L231 Difference]: Finished difference. Result has 89 places, 98 transitions, 731 flow [2024-06-27 22:46:58,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=731, PETRI_PLACES=89, PETRI_TRANSITIONS=98} [2024-06-27 22:46:58,065 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2024-06-27 22:46:58,065 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 731 flow [2024-06-27 22:46:58,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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) [2024-06-27 22:46:58,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:58,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:58,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:46:58,066 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:58,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:58,066 INFO L85 PathProgramCache]: Analyzing trace with hash 50738600, now seen corresponding path program 3 times [2024-06-27 22:46:58,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:58,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914386654] [2024-06-27 22:46:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:59,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:59,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914386654] [2024-06-27 22:46:59,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914386654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:59,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:59,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:59,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417985322] [2024-06-27 22:46:59,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:59,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:59,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:59,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:59,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:00,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:47:00,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 731 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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) [2024-06-27 22:47:00,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:00,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:47:00,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:01,622 INFO L124 PetriNetUnfolderBase]: 3627/5394 cut-off events. [2024-06-27 22:47:01,622 INFO L125 PetriNetUnfolderBase]: For 21741/21831 co-relation queries the response was YES. [2024-06-27 22:47:01,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21243 conditions, 5394 events. 3627/5394 cut-off events. For 21741/21831 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 29721 event pairs, 780 based on Foata normal form. 35/5401 useless extension candidates. Maximal degree in co-relation 21204. Up to 4627 conditions per place. [2024-06-27 22:47:01,654 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 90 selfloop transitions, 41 changer transitions 0/142 dead transitions. [2024-06-27 22:47:01,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 142 transitions, 1158 flow [2024-06-27 22:47:01,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:01,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 22:47:01,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-27 22:47:01,656 INFO L175 Difference]: Start difference. First operand has 89 places, 98 transitions, 731 flow. Second operand 7 states and 173 transitions. [2024-06-27 22:47:01,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 142 transitions, 1158 flow [2024-06-27 22:47:01,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 142 transitions, 1079 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 22:47:01,695 INFO L231 Difference]: Finished difference. Result has 94 places, 106 transitions, 867 flow [2024-06-27 22:47:01,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=867, PETRI_PLACES=94, PETRI_TRANSITIONS=106} [2024-06-27 22:47:01,697 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 43 predicate places. [2024-06-27 22:47:01,697 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 106 transitions, 867 flow [2024-06-27 22:47:01,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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) [2024-06-27 22:47:01,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:01,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:01,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:47:01,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:01,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:01,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1493331774, now seen corresponding path program 1 times [2024-06-27 22:47:01,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:01,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425795520] [2024-06-27 22:47:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:01,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:04,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:04,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425795520] [2024-06-27 22:47:04,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425795520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:04,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:04,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:04,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401100771] [2024-06-27 22:47:04,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:04,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:04,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:04,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:04,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:04,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:47:04,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 106 transitions, 867 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:04,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:04,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:47:04,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:06,500 INFO L124 PetriNetUnfolderBase]: 3907/5748 cut-off events. [2024-06-27 22:47:06,502 INFO L125 PetriNetUnfolderBase]: For 24333/24344 co-relation queries the response was YES. [2024-06-27 22:47:06,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23280 conditions, 5748 events. 3907/5748 cut-off events. For 24333/24344 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 31008 event pairs, 891 based on Foata normal form. 16/5762 useless extension candidates. Maximal degree in co-relation 23237. Up to 5327 conditions per place. [2024-06-27 22:47:06,583 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 135 selfloop transitions, 19 changer transitions 0/161 dead transitions. [2024-06-27 22:47:06,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 161 transitions, 1342 flow [2024-06-27 22:47:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:47:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:47:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 22:47:06,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 22:47:06,585 INFO L175 Difference]: Start difference. First operand has 94 places, 106 transitions, 867 flow. Second operand 8 states and 189 transitions. [2024-06-27 22:47:06,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 161 transitions, 1342 flow [2024-06-27 22:47:06,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 161 transitions, 1267 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 22:47:06,643 INFO L231 Difference]: Finished difference. Result has 96 places, 109 transitions, 873 flow [2024-06-27 22:47:06,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=873, PETRI_PLACES=96, PETRI_TRANSITIONS=109} [2024-06-27 22:47:06,644 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 45 predicate places. [2024-06-27 22:47:06,644 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 109 transitions, 873 flow [2024-06-27 22:47:06,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:06,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:06,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:06,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:47:06,646 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:06,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:06,647 INFO L85 PathProgramCache]: Analyzing trace with hash -541440593, now seen corresponding path program 1 times [2024-06-27 22:47:06,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:06,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058264478] [2024-06-27 22:47:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:06,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:09,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:09,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058264478] [2024-06-27 22:47:09,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058264478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:09,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:09,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:09,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828897795] [2024-06-27 22:47:09,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:09,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:09,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:09,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:09,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:09,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:47:09,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 109 transitions, 873 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:09,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:09,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:47:09,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:11,100 INFO L124 PetriNetUnfolderBase]: 3938/5788 cut-off events. [2024-06-27 22:47:11,101 INFO L125 PetriNetUnfolderBase]: For 25002/25013 co-relation queries the response was YES. [2024-06-27 22:47:11,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23798 conditions, 5788 events. 3938/5788 cut-off events. For 25002/25013 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 31240 event pairs, 898 based on Foata normal form. 10/5795 useless extension candidates. Maximal degree in co-relation 23755. Up to 5511 conditions per place. [2024-06-27 22:47:11,170 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 144 selfloop transitions, 21 changer transitions 0/172 dead transitions. [2024-06-27 22:47:11,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 172 transitions, 1420 flow [2024-06-27 22:47:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:47:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:47:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 22:47:11,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 22:47:11,172 INFO L175 Difference]: Start difference. First operand has 96 places, 109 transitions, 873 flow. Second operand 8 states and 190 transitions. [2024-06-27 22:47:11,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 172 transitions, 1420 flow [2024-06-27 22:47:11,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 172 transitions, 1362 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 22:47:11,366 INFO L231 Difference]: Finished difference. Result has 101 places, 121 transitions, 993 flow [2024-06-27 22:47:11,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=993, PETRI_PLACES=101, PETRI_TRANSITIONS=121} [2024-06-27 22:47:11,367 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 50 predicate places. [2024-06-27 22:47:11,368 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 121 transitions, 993 flow [2024-06-27 22:47:11,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:11,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:11,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:11,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:47:11,369 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:11,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:11,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1677221693, now seen corresponding path program 2 times [2024-06-27 22:47:11,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:11,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504190117] [2024-06-27 22:47:11,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:11,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:14,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:14,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504190117] [2024-06-27 22:47:14,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504190117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:14,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:14,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441750366] [2024-06-27 22:47:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:14,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:14,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:14,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:14,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:47:14,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 121 transitions, 993 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:14,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:14,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:47:14,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:15,854 INFO L124 PetriNetUnfolderBase]: 3969/5835 cut-off events. [2024-06-27 22:47:15,854 INFO L125 PetriNetUnfolderBase]: For 28163/28178 co-relation queries the response was YES. [2024-06-27 22:47:15,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24710 conditions, 5835 events. 3969/5835 cut-off events. For 28163/28178 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 31458 event pairs, 876 based on Foata normal form. 6/5838 useless extension candidates. Maximal degree in co-relation 24664. Up to 5297 conditions per place. [2024-06-27 22:47:15,886 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 141 selfloop transitions, 37 changer transitions 0/185 dead transitions. [2024-06-27 22:47:15,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 185 transitions, 1623 flow [2024-06-27 22:47:15,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:15,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 22:47:15,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5562310030395137 [2024-06-27 22:47:15,888 INFO L175 Difference]: Start difference. First operand has 101 places, 121 transitions, 993 flow. Second operand 7 states and 183 transitions. [2024-06-27 22:47:15,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 185 transitions, 1623 flow [2024-06-27 22:47:15,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 185 transitions, 1593 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 22:47:15,924 INFO L231 Difference]: Finished difference. Result has 107 places, 132 transitions, 1164 flow [2024-06-27 22:47:15,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1164, PETRI_PLACES=107, PETRI_TRANSITIONS=132} [2024-06-27 22:47:15,925 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 56 predicate places. [2024-06-27 22:47:15,925 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 132 transitions, 1164 flow [2024-06-27 22:47:15,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:15,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:15,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:15,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:47:15,926 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:15,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:15,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1677227273, now seen corresponding path program 3 times [2024-06-27 22:47:15,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:15,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745867194] [2024-06-27 22:47:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:15,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:18,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:18,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745867194] [2024-06-27 22:47:18,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745867194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:18,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:18,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:18,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765236093] [2024-06-27 22:47:18,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:18,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:18,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:18,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:18,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:18,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:47:18,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 132 transitions, 1164 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:18,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:18,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:47:18,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:20,493 INFO L124 PetriNetUnfolderBase]: 4000/5890 cut-off events. [2024-06-27 22:47:20,493 INFO L125 PetriNetUnfolderBase]: For 33009/33024 co-relation queries the response was YES. [2024-06-27 22:47:20,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26221 conditions, 5890 events. 4000/5890 cut-off events. For 33009/33024 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 31846 event pairs, 876 based on Foata normal form. 6/5893 useless extension candidates. Maximal degree in co-relation 26171. Up to 5329 conditions per place. [2024-06-27 22:47:20,533 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 143 selfloop transitions, 39 changer transitions 0/189 dead transitions. [2024-06-27 22:47:20,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 189 transitions, 1759 flow [2024-06-27 22:47:20,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:20,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 22:47:20,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5562310030395137 [2024-06-27 22:47:20,538 INFO L175 Difference]: Start difference. First operand has 107 places, 132 transitions, 1164 flow. Second operand 7 states and 183 transitions. [2024-06-27 22:47:20,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 189 transitions, 1759 flow [2024-06-27 22:47:20,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 189 transitions, 1720 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 22:47:20,587 INFO L231 Difference]: Finished difference. Result has 112 places, 136 transitions, 1254 flow [2024-06-27 22:47:20,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1254, PETRI_PLACES=112, PETRI_TRANSITIONS=136} [2024-06-27 22:47:20,588 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 61 predicate places. [2024-06-27 22:47:20,588 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 136 transitions, 1254 flow [2024-06-27 22:47:20,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:20,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:20,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:20,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:47:20,588 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:20,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:20,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1572898231, now seen corresponding path program 4 times [2024-06-27 22:47:20,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:20,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446322102] [2024-06-27 22:47:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:20,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:22,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:22,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446322102] [2024-06-27 22:47:22,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446322102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:22,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:22,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:22,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903860933] [2024-06-27 22:47:22,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:22,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:22,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:22,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:22,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:22,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:47:22,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 136 transitions, 1254 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:22,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:22,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:47:22,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:24,602 INFO L124 PetriNetUnfolderBase]: 4026/5926 cut-off events. [2024-06-27 22:47:24,602 INFO L125 PetriNetUnfolderBase]: For 34450/34465 co-relation queries the response was YES. [2024-06-27 22:47:24,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26620 conditions, 5926 events. 4026/5926 cut-off events. For 34450/34465 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 31998 event pairs, 876 based on Foata normal form. 6/5929 useless extension candidates. Maximal degree in co-relation 26566. Up to 5495 conditions per place. [2024-06-27 22:47:24,642 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 139 selfloop transitions, 34 changer transitions 0/180 dead transitions. [2024-06-27 22:47:24,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 180 transitions, 1754 flow [2024-06-27 22:47:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:24,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 22:47:24,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 22:47:24,644 INFO L175 Difference]: Start difference. First operand has 112 places, 136 transitions, 1254 flow. Second operand 7 states and 167 transitions. [2024-06-27 22:47:24,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 180 transitions, 1754 flow [2024-06-27 22:47:24,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 180 transitions, 1682 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 22:47:24,694 INFO L231 Difference]: Finished difference. Result has 117 places, 142 transitions, 1353 flow [2024-06-27 22:47:24,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1353, PETRI_PLACES=117, PETRI_TRANSITIONS=142} [2024-06-27 22:47:24,695 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 66 predicate places. [2024-06-27 22:47:24,695 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 142 transitions, 1353 flow [2024-06-27 22:47:24,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:24,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:24,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:24,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:47:24,696 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:24,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:24,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1140997199, now seen corresponding path program 1 times [2024-06-27 22:47:24,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:24,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157806534] [2024-06-27 22:47:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:24,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:27,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:27,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157806534] [2024-06-27 22:47:27,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157806534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:27,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:27,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:27,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280455976] [2024-06-27 22:47:27,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:27,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:27,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:27,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:27,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:27,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:47:27,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 142 transitions, 1353 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:27,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:27,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:47:27,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:29,980 INFO L124 PetriNetUnfolderBase]: 4548/6803 cut-off events. [2024-06-27 22:47:29,980 INFO L125 PetriNetUnfolderBase]: For 48879/48921 co-relation queries the response was YES. [2024-06-27 22:47:30,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30898 conditions, 6803 events. 4548/6803 cut-off events. For 48879/48921 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 39722 event pairs, 741 based on Foata normal form. 43/6693 useless extension candidates. Maximal degree in co-relation 30841. Up to 5150 conditions per place. [2024-06-27 22:47:30,030 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 177 selfloop transitions, 42 changer transitions 0/242 dead transitions. [2024-06-27 22:47:30,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 242 transitions, 2147 flow [2024-06-27 22:47:30,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:47:30,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:47:30,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 286 transitions. [2024-06-27 22:47:30,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-27 22:47:30,033 INFO L175 Difference]: Start difference. First operand has 117 places, 142 transitions, 1353 flow. Second operand 11 states and 286 transitions. [2024-06-27 22:47:30,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 242 transitions, 2147 flow [2024-06-27 22:47:30,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 242 transitions, 2066 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 22:47:30,129 INFO L231 Difference]: Finished difference. Result has 124 places, 146 transitions, 1410 flow [2024-06-27 22:47:30,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1410, PETRI_PLACES=124, PETRI_TRANSITIONS=146} [2024-06-27 22:47:30,130 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 73 predicate places. [2024-06-27 22:47:30,130 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 146 transitions, 1410 flow [2024-06-27 22:47:30,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:30,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:30,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:30,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:47:30,131 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:30,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:30,131 INFO L85 PathProgramCache]: Analyzing trace with hash 395207503, now seen corresponding path program 2 times [2024-06-27 22:47:30,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:30,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550371733] [2024-06-27 22:47:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:30,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:33,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:33,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550371733] [2024-06-27 22:47:33,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550371733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:33,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:33,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:33,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171402397] [2024-06-27 22:47:33,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:33,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:33,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:33,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:33,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:33,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:47:33,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 146 transitions, 1410 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:33,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:33,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:47:33,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:35,807 INFO L124 PetriNetUnfolderBase]: 4498/6749 cut-off events. [2024-06-27 22:47:35,808 INFO L125 PetriNetUnfolderBase]: For 52683/52726 co-relation queries the response was YES. [2024-06-27 22:47:35,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31653 conditions, 6749 events. 4498/6749 cut-off events. For 52683/52726 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 39424 event pairs, 853 based on Foata normal form. 27/6645 useless extension candidates. Maximal degree in co-relation 31594. Up to 5762 conditions per place. [2024-06-27 22:47:35,856 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 158 selfloop transitions, 39 changer transitions 0/220 dead transitions. [2024-06-27 22:47:35,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 220 transitions, 2000 flow [2024-06-27 22:47:35,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:47:35,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:47:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 22:47:35,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340425531914894 [2024-06-27 22:47:35,858 INFO L175 Difference]: Start difference. First operand has 124 places, 146 transitions, 1410 flow. Second operand 10 states and 251 transitions. [2024-06-27 22:47:35,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 220 transitions, 2000 flow [2024-06-27 22:47:35,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 220 transitions, 1947 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 22:47:35,955 INFO L231 Difference]: Finished difference. Result has 127 places, 146 transitions, 1444 flow [2024-06-27 22:47:35,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1357, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1444, PETRI_PLACES=127, PETRI_TRANSITIONS=146} [2024-06-27 22:47:35,956 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 76 predicate places. [2024-06-27 22:47:35,956 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 146 transitions, 1444 flow [2024-06-27 22:47:35,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:35,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:35,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:35,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:47:35,957 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:35,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:35,957 INFO L85 PathProgramCache]: Analyzing trace with hash -454441209, now seen corresponding path program 3 times [2024-06-27 22:47:35,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:35,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738643048] [2024-06-27 22:47:35,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:35,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:38,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:38,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738643048] [2024-06-27 22:47:38,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738643048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:38,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:38,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:38,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520046899] [2024-06-27 22:47:38,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:38,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:38,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:38,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:38,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:38,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:47:38,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 146 transitions, 1444 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:38,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:38,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:47:38,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:41,575 INFO L124 PetriNetUnfolderBase]: 4793/7169 cut-off events. [2024-06-27 22:47:41,576 INFO L125 PetriNetUnfolderBase]: For 58746/58814 co-relation queries the response was YES. [2024-06-27 22:47:41,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34001 conditions, 7169 events. 4793/7169 cut-off events. For 58746/58814 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 42165 event pairs, 918 based on Foata normal form. 20/7055 useless extension candidates. Maximal degree in co-relation 33940. Up to 5747 conditions per place. [2024-06-27 22:47:41,629 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 137 selfloop transitions, 66 changer transitions 0/226 dead transitions. [2024-06-27 22:47:41,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 226 transitions, 2091 flow [2024-06-27 22:47:41,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:47:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:47:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-06-27 22:47:41,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:47:41,631 INFO L175 Difference]: Start difference. First operand has 127 places, 146 transitions, 1444 flow. Second operand 11 states and 275 transitions. [2024-06-27 22:47:41,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 226 transitions, 2091 flow [2024-06-27 22:47:41,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 226 transitions, 2016 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:47:41,718 INFO L231 Difference]: Finished difference. Result has 130 places, 147 transitions, 1522 flow [2024-06-27 22:47:41,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1522, PETRI_PLACES=130, PETRI_TRANSITIONS=147} [2024-06-27 22:47:41,718 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 79 predicate places. [2024-06-27 22:47:41,719 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 147 transitions, 1522 flow [2024-06-27 22:47:41,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:41,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:41,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:41,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:47:41,719 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:41,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:41,720 INFO L85 PathProgramCache]: Analyzing trace with hash 376413817, now seen corresponding path program 4 times [2024-06-27 22:47:41,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:41,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917537832] [2024-06-27 22:47:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:41,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:43,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:43,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917537832] [2024-06-27 22:47:43,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917537832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:43,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:43,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:43,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634772288] [2024-06-27 22:47:43,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:43,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:43,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:43,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:43,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:44,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:47:44,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 147 transitions, 1522 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:44,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:44,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:47:44,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:46,326 INFO L124 PetriNetUnfolderBase]: 5684/8502 cut-off events. [2024-06-27 22:47:46,326 INFO L125 PetriNetUnfolderBase]: For 76022/76092 co-relation queries the response was YES. [2024-06-27 22:47:46,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40922 conditions, 8502 events. 5684/8502 cut-off events. For 76022/76092 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 51343 event pairs, 923 based on Foata normal form. 58/8393 useless extension candidates. Maximal degree in co-relation 40860. Up to 5425 conditions per place. [2024-06-27 22:47:46,390 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 145 selfloop transitions, 62 changer transitions 0/230 dead transitions. [2024-06-27 22:47:46,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 230 transitions, 2328 flow [2024-06-27 22:47:46,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:47:46,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:47:46,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-27 22:47:46,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5697399527186762 [2024-06-27 22:47:46,394 INFO L175 Difference]: Start difference. First operand has 130 places, 147 transitions, 1522 flow. Second operand 9 states and 241 transitions. [2024-06-27 22:47:46,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 230 transitions, 2328 flow [2024-06-27 22:47:46,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 230 transitions, 2185 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 22:47:46,511 INFO L231 Difference]: Finished difference. Result has 131 places, 155 transitions, 1649 flow [2024-06-27 22:47:46,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1649, PETRI_PLACES=131, PETRI_TRANSITIONS=155} [2024-06-27 22:47:46,511 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 80 predicate places. [2024-06-27 22:47:46,511 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 155 transitions, 1649 flow [2024-06-27 22:47:46,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:46,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:46,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:46,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:47:46,512 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:46,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:46,512 INFO L85 PathProgramCache]: Analyzing trace with hash 379270777, now seen corresponding path program 5 times [2024-06-27 22:47:46,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:46,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900551612] [2024-06-27 22:47:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:46,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:48,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:48,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900551612] [2024-06-27 22:47:48,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900551612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:48,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:48,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:48,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858029566] [2024-06-27 22:47:48,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:48,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:48,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:48,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:47:48,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 155 transitions, 1649 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:48,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:48,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:47:48,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:50,967 INFO L124 PetriNetUnfolderBase]: 5624/8440 cut-off events. [2024-06-27 22:47:50,968 INFO L125 PetriNetUnfolderBase]: For 83781/83852 co-relation queries the response was YES. [2024-06-27 22:47:51,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42334 conditions, 8440 events. 5624/8440 cut-off events. For 83781/83852 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 51131 event pairs, 1162 based on Foata normal form. 25/8320 useless extension candidates. Maximal degree in co-relation 42271. Up to 6834 conditions per place. [2024-06-27 22:47:51,037 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 133 selfloop transitions, 54 changer transitions 0/210 dead transitions. [2024-06-27 22:47:51,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 210 transitions, 2207 flow [2024-06-27 22:47:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:47:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:47:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 22:47:51,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 22:47:51,040 INFO L175 Difference]: Start difference. First operand has 131 places, 155 transitions, 1649 flow. Second operand 8 states and 204 transitions. [2024-06-27 22:47:51,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 210 transitions, 2207 flow [2024-06-27 22:47:51,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 210 transitions, 2065 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 22:47:51,258 INFO L231 Difference]: Finished difference. Result has 131 places, 157 transitions, 1670 flow [2024-06-27 22:47:51,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1670, PETRI_PLACES=131, PETRI_TRANSITIONS=157} [2024-06-27 22:47:51,258 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 80 predicate places. [2024-06-27 22:47:51,259 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 157 transitions, 1670 flow [2024-06-27 22:47:51,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:51,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:51,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:51,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:47:51,259 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:51,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1274471589, now seen corresponding path program 6 times [2024-06-27 22:47:51,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:51,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513107805] [2024-06-27 22:47:51,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:51,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:52,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:52,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513107805] [2024-06-27 22:47:52,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513107805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:52,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:52,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:52,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089099116] [2024-06-27 22:47:52,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:52,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:52,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:52,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:52,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:53,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 22:47:53,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 157 transitions, 1670 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:53,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:53,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 22:47:53,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:54,733 INFO L124 PetriNetUnfolderBase]: 4874/7753 cut-off events. [2024-06-27 22:47:54,733 INFO L125 PetriNetUnfolderBase]: For 71395/71680 co-relation queries the response was YES. [2024-06-27 22:47:54,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36888 conditions, 7753 events. 4874/7753 cut-off events. For 71395/71680 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 50406 event pairs, 486 based on Foata normal form. 213/7735 useless extension candidates. Maximal degree in co-relation 36826. Up to 3898 conditions per place. [2024-06-27 22:47:54,794 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 90 selfloop transitions, 51 changer transitions 0/199 dead transitions. [2024-06-27 22:47:54,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 199 transitions, 2081 flow [2024-06-27 22:47:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 22:47:54,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683890577507599 [2024-06-27 22:47:54,814 INFO L175 Difference]: Start difference. First operand has 131 places, 157 transitions, 1670 flow. Second operand 7 states and 187 transitions. [2024-06-27 22:47:54,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 199 transitions, 2081 flow [2024-06-27 22:47:54,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 199 transitions, 1960 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 22:47:54,960 INFO L231 Difference]: Finished difference. Result has 132 places, 159 transitions, 1736 flow [2024-06-27 22:47:54,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1736, PETRI_PLACES=132, PETRI_TRANSITIONS=159} [2024-06-27 22:47:54,961 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 81 predicate places. [2024-06-27 22:47:54,961 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 159 transitions, 1736 flow [2024-06-27 22:47:54,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:54,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:54,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:54,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:47:54,963 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:54,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:54,963 INFO L85 PathProgramCache]: Analyzing trace with hash -572713663, now seen corresponding path program 1 times [2024-06-27 22:47:54,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:54,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947722342] [2024-06-27 22:47:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:54,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:58,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:58,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947722342] [2024-06-27 22:47:58,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947722342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:58,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:58,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:58,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017620891] [2024-06-27 22:47:58,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:58,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:58,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:58,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:58,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:58,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:47:58,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 159 transitions, 1736 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:58,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:58,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:47:58,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:01,259 INFO L124 PetriNetUnfolderBase]: 6398/9602 cut-off events. [2024-06-27 22:48:01,259 INFO L125 PetriNetUnfolderBase]: For 76055/76074 co-relation queries the response was YES. [2024-06-27 22:48:01,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46504 conditions, 9602 events. 6398/9602 cut-off events. For 76055/76074 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 58528 event pairs, 1780 based on Foata normal form. 18/9618 useless extension candidates. Maximal degree in co-relation 46441. Up to 8872 conditions per place. [2024-06-27 22:48:01,335 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 195 selfloop transitions, 29 changer transitions 0/231 dead transitions. [2024-06-27 22:48:01,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 231 transitions, 2382 flow [2024-06-27 22:48:01,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:48:01,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:48:01,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-06-27 22:48:01,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 22:48:01,337 INFO L175 Difference]: Start difference. First operand has 132 places, 159 transitions, 1736 flow. Second operand 10 states and 230 transitions. [2024-06-27 22:48:01,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 231 transitions, 2382 flow [2024-06-27 22:48:01,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 231 transitions, 2309 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:01,498 INFO L231 Difference]: Finished difference. Result has 138 places, 168 transitions, 1801 flow [2024-06-27 22:48:01,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1801, PETRI_PLACES=138, PETRI_TRANSITIONS=168} [2024-06-27 22:48:01,498 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 87 predicate places. [2024-06-27 22:48:01,498 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 168 transitions, 1801 flow [2024-06-27 22:48:01,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:01,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:01,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:01,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:48:01,499 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:01,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:01,499 INFO L85 PathProgramCache]: Analyzing trace with hash -570398694, now seen corresponding path program 1 times [2024-06-27 22:48:01,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:01,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936435223] [2024-06-27 22:48:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:01,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:04,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936435223] [2024-06-27 22:48:04,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936435223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:04,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:04,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:04,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862549996] [2024-06-27 22:48:04,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:04,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:04,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:04,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:04,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:05,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:05,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 168 transitions, 1801 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:05,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:05,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:05,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:07,725 INFO L124 PetriNetUnfolderBase]: 6728/10038 cut-off events. [2024-06-27 22:48:07,726 INFO L125 PetriNetUnfolderBase]: For 74289/74308 co-relation queries the response was YES. [2024-06-27 22:48:07,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47782 conditions, 10038 events. 6728/10038 cut-off events. For 74289/74308 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 61286 event pairs, 1361 based on Foata normal form. 26/10061 useless extension candidates. Maximal degree in co-relation 47719. Up to 8987 conditions per place. [2024-06-27 22:48:07,805 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 227 selfloop transitions, 25 changer transitions 0/259 dead transitions. [2024-06-27 22:48:07,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 259 transitions, 2685 flow [2024-06-27 22:48:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:48:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:48:07,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-27 22:48:07,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:48:07,807 INFO L175 Difference]: Start difference. First operand has 138 places, 168 transitions, 1801 flow. Second operand 10 states and 250 transitions. [2024-06-27 22:48:07,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 259 transitions, 2685 flow [2024-06-27 22:48:07,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 259 transitions, 2631 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:07,948 INFO L231 Difference]: Finished difference. Result has 145 places, 173 transitions, 1867 flow [2024-06-27 22:48:07,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1747, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1867, PETRI_PLACES=145, PETRI_TRANSITIONS=173} [2024-06-27 22:48:07,948 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 94 predicate places. [2024-06-27 22:48:07,948 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 173 transitions, 1867 flow [2024-06-27 22:48:07,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:07,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:07,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:07,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:48:07,949 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:07,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:07,950 INFO L85 PathProgramCache]: Analyzing trace with hash -481685064, now seen corresponding path program 2 times [2024-06-27 22:48:07,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:07,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393746434] [2024-06-27 22:48:07,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:07,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:11,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:11,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393746434] [2024-06-27 22:48:11,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393746434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:11,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:11,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213453682] [2024-06-27 22:48:11,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:11,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:11,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:11,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:11,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:11,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:11,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 173 transitions, 1867 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:11,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:11,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:11,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:13,750 INFO L124 PetriNetUnfolderBase]: 6846/10248 cut-off events. [2024-06-27 22:48:13,750 INFO L125 PetriNetUnfolderBase]: For 78712/78731 co-relation queries the response was YES. [2024-06-27 22:48:13,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49194 conditions, 10248 events. 6846/10248 cut-off events. For 78712/78731 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 62772 event pairs, 1507 based on Foata normal form. 30/10275 useless extension candidates. Maximal degree in co-relation 49127. Up to 9565 conditions per place. [2024-06-27 22:48:13,939 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 211 selfloop transitions, 22 changer transitions 0/240 dead transitions. [2024-06-27 22:48:13,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 240 transitions, 2534 flow [2024-06-27 22:48:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:48:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:48:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 22:48:13,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-27 22:48:13,941 INFO L175 Difference]: Start difference. First operand has 145 places, 173 transitions, 1867 flow. Second operand 9 states and 217 transitions. [2024-06-27 22:48:13,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 240 transitions, 2534 flow [2024-06-27 22:48:14,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 240 transitions, 2491 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:14,091 INFO L231 Difference]: Finished difference. Result has 149 places, 174 transitions, 1888 flow [2024-06-27 22:48:14,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1888, PETRI_PLACES=149, PETRI_TRANSITIONS=174} [2024-06-27 22:48:14,092 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 98 predicate places. [2024-06-27 22:48:14,092 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 174 transitions, 1888 flow [2024-06-27 22:48:14,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:14,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:14,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:14,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:48:14,093 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:14,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:14,093 INFO L85 PathProgramCache]: Analyzing trace with hash -633467664, now seen corresponding path program 3 times [2024-06-27 22:48:14,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:14,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297077659] [2024-06-27 22:48:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:14,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:17,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:17,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297077659] [2024-06-27 22:48:17,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297077659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:17,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:17,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:17,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974115078] [2024-06-27 22:48:17,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:17,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:17,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:17,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:17,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:17,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:17,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 174 transitions, 1888 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:17,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:17,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:17,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:19,823 INFO L124 PetriNetUnfolderBase]: 6826/10216 cut-off events. [2024-06-27 22:48:19,823 INFO L125 PetriNetUnfolderBase]: For 78325/78344 co-relation queries the response was YES. [2024-06-27 22:48:19,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49021 conditions, 10216 events. 6826/10216 cut-off events. For 78325/78344 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 62542 event pairs, 1449 based on Foata normal form. 26/10239 useless extension candidates. Maximal degree in co-relation 48952. Up to 9313 conditions per place. [2024-06-27 22:48:19,904 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 215 selfloop transitions, 24 changer transitions 0/246 dead transitions. [2024-06-27 22:48:19,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 246 transitions, 2607 flow [2024-06-27 22:48:19,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:48:19,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:48:19,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 22:48:19,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-27 22:48:19,906 INFO L175 Difference]: Start difference. First operand has 149 places, 174 transitions, 1888 flow. Second operand 9 states and 220 transitions. [2024-06-27 22:48:19,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 246 transitions, 2607 flow [2024-06-27 22:48:20,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 246 transitions, 2558 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 22:48:20,071 INFO L231 Difference]: Finished difference. Result has 152 places, 177 transitions, 1942 flow [2024-06-27 22:48:20,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1942, PETRI_PLACES=152, PETRI_TRANSITIONS=177} [2024-06-27 22:48:20,072 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 101 predicate places. [2024-06-27 22:48:20,072 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 177 transitions, 1942 flow [2024-06-27 22:48:20,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:20,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:20,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:20,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:48:20,073 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:20,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:20,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1197263710, now seen corresponding path program 4 times [2024-06-27 22:48:20,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:20,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730016388] [2024-06-27 22:48:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:20,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:23,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:23,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:23,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730016388] [2024-06-27 22:48:23,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730016388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:23,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:23,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:23,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837504865] [2024-06-27 22:48:23,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:23,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:23,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:23,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:23,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:23,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:23,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 177 transitions, 1942 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:23,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:23,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:23,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:26,347 INFO L124 PetriNetUnfolderBase]: 7002/10480 cut-off events. [2024-06-27 22:48:26,348 INFO L125 PetriNetUnfolderBase]: For 84427/84442 co-relation queries the response was YES. [2024-06-27 22:48:26,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50384 conditions, 10480 events. 7002/10480 cut-off events. For 84427/84442 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 64352 event pairs, 1538 based on Foata normal form. 20/10497 useless extension candidates. Maximal degree in co-relation 50313. Up to 9516 conditions per place. [2024-06-27 22:48:26,441 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 189 selfloop transitions, 46 changer transitions 0/242 dead transitions. [2024-06-27 22:48:26,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 242 transitions, 2606 flow [2024-06-27 22:48:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:48:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:48:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 22:48:26,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-27 22:48:26,443 INFO L175 Difference]: Start difference. First operand has 152 places, 177 transitions, 1942 flow. Second operand 9 states and 219 transitions. [2024-06-27 22:48:26,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 242 transitions, 2606 flow [2024-06-27 22:48:26,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 242 transitions, 2577 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:26,630 INFO L231 Difference]: Finished difference. Result has 156 places, 178 transitions, 2024 flow [2024-06-27 22:48:26,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2024, PETRI_PLACES=156, PETRI_TRANSITIONS=178} [2024-06-27 22:48:26,631 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 105 predicate places. [2024-06-27 22:48:26,631 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 178 transitions, 2024 flow [2024-06-27 22:48:26,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:26,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:26,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:26,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:48:26,632 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:26,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:26,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1202626090, now seen corresponding path program 5 times [2024-06-27 22:48:26,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:26,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590533483] [2024-06-27 22:48:26,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:26,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:29,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:29,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:29,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590533483] [2024-06-27 22:48:29,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590533483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:29,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:29,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:29,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005618771] [2024-06-27 22:48:29,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:29,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:29,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:29,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:29,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:30,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:30,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 178 transitions, 2024 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:30,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:30,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:30,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:32,957 INFO L124 PetriNetUnfolderBase]: 7178/10776 cut-off events. [2024-06-27 22:48:32,958 INFO L125 PetriNetUnfolderBase]: For 89776/89791 co-relation queries the response was YES. [2024-06-27 22:48:32,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52305 conditions, 10776 events. 7178/10776 cut-off events. For 89776/89791 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 66752 event pairs, 1574 based on Foata normal form. 20/10793 useless extension candidates. Maximal degree in co-relation 52232. Up to 9788 conditions per place. [2024-06-27 22:48:33,034 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 192 selfloop transitions, 44 changer transitions 0/243 dead transitions. [2024-06-27 22:48:33,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 243 transitions, 2692 flow [2024-06-27 22:48:33,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:48:33,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:48:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 22:48:33,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-27 22:48:33,036 INFO L175 Difference]: Start difference. First operand has 156 places, 178 transitions, 2024 flow. Second operand 9 states and 219 transitions. [2024-06-27 22:48:33,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 243 transitions, 2692 flow [2024-06-27 22:48:33,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 243 transitions, 2593 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 22:48:33,214 INFO L231 Difference]: Finished difference. Result has 158 places, 179 transitions, 2034 flow [2024-06-27 22:48:33,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2034, PETRI_PLACES=158, PETRI_TRANSITIONS=179} [2024-06-27 22:48:33,215 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 107 predicate places. [2024-06-27 22:48:33,215 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 179 transitions, 2034 flow [2024-06-27 22:48:33,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:33,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:33,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:33,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:48:33,216 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:33,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:33,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1202773960, now seen corresponding path program 6 times [2024-06-27 22:48:33,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:33,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465190630] [2024-06-27 22:48:33,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:33,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:36,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:36,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465190630] [2024-06-27 22:48:36,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465190630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:36,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:36,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:36,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080673933] [2024-06-27 22:48:36,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:36,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:36,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:36,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:36,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:36,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:36,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 179 transitions, 2034 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:36,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:36,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:36,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:39,413 INFO L124 PetriNetUnfolderBase]: 7304/10998 cut-off events. [2024-06-27 22:48:39,413 INFO L125 PetriNetUnfolderBase]: For 93641/93656 co-relation queries the response was YES. [2024-06-27 22:48:39,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53256 conditions, 10998 events. 7304/10998 cut-off events. For 93641/93656 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 68425 event pairs, 1566 based on Foata normal form. 16/11011 useless extension candidates. Maximal degree in co-relation 53183. Up to 9534 conditions per place. [2024-06-27 22:48:39,508 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 195 selfloop transitions, 47 changer transitions 0/249 dead transitions. [2024-06-27 22:48:39,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 249 transitions, 2750 flow [2024-06-27 22:48:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:48:39,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:48:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 22:48:39,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-27 22:48:39,518 INFO L175 Difference]: Start difference. First operand has 158 places, 179 transitions, 2034 flow. Second operand 9 states and 221 transitions. [2024-06-27 22:48:39,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 249 transitions, 2750 flow [2024-06-27 22:48:39,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 249 transitions, 2629 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 22:48:39,758 INFO L231 Difference]: Finished difference. Result has 160 places, 182 transitions, 2062 flow [2024-06-27 22:48:39,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2062, PETRI_PLACES=160, PETRI_TRANSITIONS=182} [2024-06-27 22:48:39,759 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 109 predicate places. [2024-06-27 22:48:39,759 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 182 transitions, 2062 flow [2024-06-27 22:48:39,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:39,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:39,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:39,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:48:39,760 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:39,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:39,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1197048508, now seen corresponding path program 1 times [2024-06-27 22:48:39,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:39,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318631382] [2024-06-27 22:48:39,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:39,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:43,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:43,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318631382] [2024-06-27 22:48:43,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318631382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:43,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:43,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:43,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163661890] [2024-06-27 22:48:43,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:43,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:43,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:43,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:43,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:43,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:43,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 182 transitions, 2062 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:43,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:43,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:43,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:46,120 INFO L124 PetriNetUnfolderBase]: 7634/11540 cut-off events. [2024-06-27 22:48:46,121 INFO L125 PetriNetUnfolderBase]: For 105504/105519 co-relation queries the response was YES. [2024-06-27 22:48:46,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56350 conditions, 11540 events. 7634/11540 cut-off events. For 105504/105519 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 72703 event pairs, 1479 based on Foata normal form. 16/11553 useless extension candidates. Maximal degree in co-relation 56276. Up to 9470 conditions per place. [2024-06-27 22:48:46,237 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 192 selfloop transitions, 54 changer transitions 0/253 dead transitions. [2024-06-27 22:48:46,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 253 transitions, 2886 flow [2024-06-27 22:48:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:48:46,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:48:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 22:48:46,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-27 22:48:46,241 INFO L175 Difference]: Start difference. First operand has 160 places, 182 transitions, 2062 flow. Second operand 9 states and 224 transitions. [2024-06-27 22:48:46,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 253 transitions, 2886 flow [2024-06-27 22:48:46,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 253 transitions, 2815 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:46,494 INFO L231 Difference]: Finished difference. Result has 164 places, 184 transitions, 2140 flow [2024-06-27 22:48:46,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2140, PETRI_PLACES=164, PETRI_TRANSITIONS=184} [2024-06-27 22:48:46,494 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 113 predicate places. [2024-06-27 22:48:46,494 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 184 transitions, 2140 flow [2024-06-27 22:48:46,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:46,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:46,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:46,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:48:46,495 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:46,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:46,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1216071930, now seen corresponding path program 7 times [2024-06-27 22:48:46,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:46,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331589147] [2024-06-27 22:48:46,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:46,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:49,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:49,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331589147] [2024-06-27 22:48:49,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331589147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:49,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:49,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:49,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526213592] [2024-06-27 22:48:49,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:49,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:49,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:49,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:49,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:49,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:49,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 184 transitions, 2140 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:49,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:49,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:49,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:52,194 INFO L124 PetriNetUnfolderBase]: 7969/12101 cut-off events. [2024-06-27 22:48:52,194 INFO L125 PetriNetUnfolderBase]: For 118266/118281 co-relation queries the response was YES. [2024-06-27 22:48:52,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59767 conditions, 12101 events. 7969/12101 cut-off events. For 118266/118281 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 77665 event pairs, 1434 based on Foata normal form. 16/12114 useless extension candidates. Maximal degree in co-relation 59691. Up to 9760 conditions per place. [2024-06-27 22:48:52,368 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 209 selfloop transitions, 51 changer transitions 0/267 dead transitions. [2024-06-27 22:48:52,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 267 transitions, 3102 flow [2024-06-27 22:48:52,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:48:52,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:48:52,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-27 22:48:52,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2024-06-27 22:48:52,370 INFO L175 Difference]: Start difference. First operand has 164 places, 184 transitions, 2140 flow. Second operand 9 states and 227 transitions. [2024-06-27 22:48:52,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 267 transitions, 3102 flow [2024-06-27 22:48:52,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 267 transitions, 3035 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:52,824 INFO L231 Difference]: Finished difference. Result has 170 places, 193 transitions, 2340 flow [2024-06-27 22:48:52,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2073, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2340, PETRI_PLACES=170, PETRI_TRANSITIONS=193} [2024-06-27 22:48:52,825 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 119 predicate places. [2024-06-27 22:48:52,825 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 193 transitions, 2340 flow [2024-06-27 22:48:52,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:52,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:52,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:52,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:48:52,826 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:52,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:52,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1127358300, now seen corresponding path program 8 times [2024-06-27 22:48:52,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:52,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108735856] [2024-06-27 22:48:52,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:52,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:55,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:55,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108735856] [2024-06-27 22:48:55,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108735856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:55,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:55,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:55,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872848730] [2024-06-27 22:48:55,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:55,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:55,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:55,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:55,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:55,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:55,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 193 transitions, 2340 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:55,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:55,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:55,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:58,401 INFO L124 PetriNetUnfolderBase]: 7941/12057 cut-off events. [2024-06-27 22:48:58,401 INFO L125 PetriNetUnfolderBase]: For 121279/121294 co-relation queries the response was YES. [2024-06-27 22:48:58,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60784 conditions, 12057 events. 7941/12057 cut-off events. For 121279/121294 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 77061 event pairs, 1602 based on Foata normal form. 20/12074 useless extension candidates. Maximal degree in co-relation 60704. Up to 10790 conditions per place. [2024-06-27 22:48:58,502 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 198 selfloop transitions, 42 changer transitions 0/247 dead transitions. [2024-06-27 22:48:58,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 247 transitions, 2981 flow [2024-06-27 22:48:58,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:48:58,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:48:58,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 22:48:58,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 22:48:58,503 INFO L175 Difference]: Start difference. First operand has 170 places, 193 transitions, 2340 flow. Second operand 8 states and 196 transitions. [2024-06-27 22:48:58,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 247 transitions, 2981 flow [2024-06-27 22:48:58,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 247 transitions, 2901 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:58,800 INFO L231 Difference]: Finished difference. Result has 173 places, 193 transitions, 2361 flow [2024-06-27 22:48:58,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2361, PETRI_PLACES=173, PETRI_TRANSITIONS=193} [2024-06-27 22:48:58,801 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 122 predicate places. [2024-06-27 22:48:58,801 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 193 transitions, 2361 flow [2024-06-27 22:48:58,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:58,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:58,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:58,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:48:58,802 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:58,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:58,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1127506170, now seen corresponding path program 9 times [2024-06-27 22:48:58,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:58,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965033143] [2024-06-27 22:48:58,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:58,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:01,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:01,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965033143] [2024-06-27 22:49:01,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965033143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:01,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:01,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:49:01,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239659229] [2024-06-27 22:49:01,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:01,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:49:01,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:01,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:49:01,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:49:01,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:01,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 193 transitions, 2361 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:01,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:01,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:01,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:04,758 INFO L124 PetriNetUnfolderBase]: 7921/12025 cut-off events. [2024-06-27 22:49:04,759 INFO L125 PetriNetUnfolderBase]: For 113165/113180 co-relation queries the response was YES. [2024-06-27 22:49:04,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60369 conditions, 12025 events. 7921/12025 cut-off events. For 113165/113180 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 76729 event pairs, 1500 based on Foata normal form. 16/12038 useless extension candidates. Maximal degree in co-relation 60288. Up to 10318 conditions per place. [2024-06-27 22:49:04,860 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 201 selfloop transitions, 45 changer transitions 0/253 dead transitions. [2024-06-27 22:49:04,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 253 transitions, 3079 flow [2024-06-27 22:49:04,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:49:04,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:49:04,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 22:49:04,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 22:49:04,862 INFO L175 Difference]: Start difference. First operand has 173 places, 193 transitions, 2361 flow. Second operand 8 states and 197 transitions. [2024-06-27 22:49:04,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 253 transitions, 3079 flow [2024-06-27 22:49:05,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 253 transitions, 2964 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 22:49:05,146 INFO L231 Difference]: Finished difference. Result has 175 places, 196 transitions, 2420 flow [2024-06-27 22:49:05,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2254, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2420, PETRI_PLACES=175, PETRI_TRANSITIONS=196} [2024-06-27 22:49:05,147 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 124 predicate places. [2024-06-27 22:49:05,147 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 196 transitions, 2420 flow [2024-06-27 22:49:05,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:05,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:05,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:05,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:49:05,148 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:05,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:05,148 INFO L85 PathProgramCache]: Analyzing trace with hash -853911964, now seen corresponding path program 10 times [2024-06-27 22:49:05,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:05,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190005402] [2024-06-27 22:49:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:05,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:07,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:07,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190005402] [2024-06-27 22:49:07,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190005402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:07,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:07,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:07,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702567299] [2024-06-27 22:49:07,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:07,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:07,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:07,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:07,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:07,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:49:07,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 196 transitions, 2420 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:07,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:07,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:49:07,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:09,862 INFO L124 PetriNetUnfolderBase]: 6442/10483 cut-off events. [2024-06-27 22:49:09,863 INFO L125 PetriNetUnfolderBase]: For 106025/106199 co-relation queries the response was YES. [2024-06-27 22:49:09,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53480 conditions, 10483 events. 6442/10483 cut-off events. For 106025/106199 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 72673 event pairs, 474 based on Foata normal form. 123/10448 useless extension candidates. Maximal degree in co-relation 53397. Up to 7374 conditions per place. [2024-06-27 22:49:09,970 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 146 selfloop transitions, 54 changer transitions 0/242 dead transitions. [2024-06-27 22:49:09,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 242 transitions, 3006 flow [2024-06-27 22:49:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:49:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:49:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 22:49:09,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5501519756838906 [2024-06-27 22:49:09,972 INFO L175 Difference]: Start difference. First operand has 175 places, 196 transitions, 2420 flow. Second operand 7 states and 181 transitions. [2024-06-27 22:49:09,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 242 transitions, 3006 flow [2024-06-27 22:49:10,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 242 transitions, 2954 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 22:49:10,240 INFO L231 Difference]: Finished difference. Result has 179 places, 201 transitions, 2628 flow [2024-06-27 22:49:10,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2628, PETRI_PLACES=179, PETRI_TRANSITIONS=201} [2024-06-27 22:49:10,240 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 128 predicate places. [2024-06-27 22:49:10,240 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 201 transitions, 2628 flow [2024-06-27 22:49:10,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:10,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:10,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:10,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:49:10,241 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:10,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:10,241 INFO L85 PathProgramCache]: Analyzing trace with hash -832540894, now seen corresponding path program 2 times [2024-06-27 22:49:10,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:10,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475121649] [2024-06-27 22:49:10,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:10,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:14,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:14,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:14,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475121649] [2024-06-27 22:49:14,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475121649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:14,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:14,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:49:14,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935198769] [2024-06-27 22:49:14,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:14,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:49:14,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:14,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:49:14,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:49:14,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:14,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 201 transitions, 2628 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:14,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:14,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:14,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:17,205 INFO L124 PetriNetUnfolderBase]: 8219/12565 cut-off events. [2024-06-27 22:49:17,205 INFO L125 PetriNetUnfolderBase]: For 119657/119672 co-relation queries the response was YES. [2024-06-27 22:49:17,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64845 conditions, 12565 events. 8219/12565 cut-off events. For 119657/119672 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 81317 event pairs, 1629 based on Foata normal form. 16/12578 useless extension candidates. Maximal degree in co-relation 64759. Up to 10174 conditions per place. [2024-06-27 22:49:17,332 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 219 selfloop transitions, 58 changer transitions 0/284 dead transitions. [2024-06-27 22:49:17,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 284 transitions, 3445 flow [2024-06-27 22:49:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:49:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:49:17,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-27 22:49:17,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-27 22:49:17,334 INFO L175 Difference]: Start difference. First operand has 179 places, 201 transitions, 2628 flow. Second operand 10 states and 246 transitions. [2024-06-27 22:49:17,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 284 transitions, 3445 flow [2024-06-27 22:49:17,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 284 transitions, 3382 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 22:49:17,678 INFO L231 Difference]: Finished difference. Result has 184 places, 207 transitions, 2765 flow [2024-06-27 22:49:17,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2765, PETRI_PLACES=184, PETRI_TRANSITIONS=207} [2024-06-27 22:49:17,679 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 133 predicate places. [2024-06-27 22:49:17,679 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 207 transitions, 2765 flow [2024-06-27 22:49:17,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:17,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:17,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:17,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:49:17,680 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:17,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:17,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2127733184, now seen corresponding path program 1 times [2024-06-27 22:49:17,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:17,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586507692] [2024-06-27 22:49:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:17,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:20,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:20,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:20,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586507692] [2024-06-27 22:49:20,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586507692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:20,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:20,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:20,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193244109] [2024-06-27 22:49:20,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:20,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:20,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:20,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:20,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:20,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:49:20,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 207 transitions, 2765 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:20,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:20,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:49:20,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:23,552 INFO L124 PetriNetUnfolderBase]: 7864/12170 cut-off events. [2024-06-27 22:49:23,552 INFO L125 PetriNetUnfolderBase]: For 111176/111238 co-relation queries the response was YES. [2024-06-27 22:49:23,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63460 conditions, 12170 events. 7864/12170 cut-off events. For 111176/111238 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 80204 event pairs, 1777 based on Foata normal form. 6/12101 useless extension candidates. Maximal degree in co-relation 63374. Up to 11068 conditions per place. [2024-06-27 22:49:23,676 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 220 selfloop transitions, 48 changer transitions 0/297 dead transitions. [2024-06-27 22:49:23,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 297 transitions, 3679 flow [2024-06-27 22:49:23,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:49:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:49:23,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 22:49:23,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404255319148936 [2024-06-27 22:49:23,680 INFO L175 Difference]: Start difference. First operand has 184 places, 207 transitions, 2765 flow. Second operand 10 states and 254 transitions. [2024-06-27 22:49:23,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 297 transitions, 3679 flow [2024-06-27 22:49:23,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 297 transitions, 3552 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:49:23,964 INFO L231 Difference]: Finished difference. Result has 188 places, 225 transitions, 2949 flow [2024-06-27 22:49:23,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2642, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2949, PETRI_PLACES=188, PETRI_TRANSITIONS=225} [2024-06-27 22:49:23,965 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 137 predicate places. [2024-06-27 22:49:23,965 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 225 transitions, 2949 flow [2024-06-27 22:49:23,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:23,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:23,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:23,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:49:23,965 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:23,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:23,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1989751238, now seen corresponding path program 1 times [2024-06-27 22:49:23,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:23,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298796108] [2024-06-27 22:49:23,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:23,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:26,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:26,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298796108] [2024-06-27 22:49:26,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298796108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:26,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:26,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:49:26,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225601447] [2024-06-27 22:49:26,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:26,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:49:26,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:26,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:49:26,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:49:26,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:26,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 225 transitions, 2949 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:26,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:26,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:26,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:29,572 INFO L124 PetriNetUnfolderBase]: 8339/12935 cut-off events. [2024-06-27 22:49:29,573 INFO L125 PetriNetUnfolderBase]: For 125363/125373 co-relation queries the response was YES. [2024-06-27 22:49:29,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68657 conditions, 12935 events. 8339/12935 cut-off events. For 125363/125373 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 85907 event pairs, 2535 based on Foata normal form. 10/12943 useless extension candidates. Maximal degree in co-relation 68569. Up to 11829 conditions per place. [2024-06-27 22:49:29,699 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 238 selfloop transitions, 33 changer transitions 0/278 dead transitions. [2024-06-27 22:49:29,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 278 transitions, 3785 flow [2024-06-27 22:49:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:49:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:49:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 22:49:29,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-27 22:49:29,701 INFO L175 Difference]: Start difference. First operand has 188 places, 225 transitions, 2949 flow. Second operand 7 states and 176 transitions. [2024-06-27 22:49:29,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 278 transitions, 3785 flow [2024-06-27 22:49:29,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 278 transitions, 3690 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-27 22:49:29,992 INFO L231 Difference]: Finished difference. Result has 192 places, 231 transitions, 3004 flow [2024-06-27 22:49:29,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2855, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3004, PETRI_PLACES=192, PETRI_TRANSITIONS=231} [2024-06-27 22:49:29,993 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 141 predicate places. [2024-06-27 22:49:29,993 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 231 transitions, 3004 flow [2024-06-27 22:49:29,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:29,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:29,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:29,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:49:29,994 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:29,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:29,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1879633946, now seen corresponding path program 2 times [2024-06-27 22:49:29,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:29,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740212252] [2024-06-27 22:49:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:29,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:32,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740212252] [2024-06-27 22:49:32,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740212252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:32,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:32,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:49:32,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460105936] [2024-06-27 22:49:32,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:32,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:49:32,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:32,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:49:32,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:49:32,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:32,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 231 transitions, 3004 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:32,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:32,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:32,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:35,909 INFO L124 PetriNetUnfolderBase]: 8454/13113 cut-off events. [2024-06-27 22:49:35,909 INFO L125 PetriNetUnfolderBase]: For 132396/132406 co-relation queries the response was YES. [2024-06-27 22:49:36,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70384 conditions, 13113 events. 8454/13113 cut-off events. For 132396/132406 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 87358 event pairs, 2535 based on Foata normal form. 10/13121 useless extension candidates. Maximal degree in co-relation 70294. Up to 12085 conditions per place. [2024-06-27 22:49:36,056 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 243 selfloop transitions, 31 changer transitions 0/281 dead transitions. [2024-06-27 22:49:36,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 281 transitions, 3817 flow [2024-06-27 22:49:36,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:49:36,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:49:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 22:49:36,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48138297872340424 [2024-06-27 22:49:36,061 INFO L175 Difference]: Start difference. First operand has 192 places, 231 transitions, 3004 flow. Second operand 8 states and 181 transitions. [2024-06-27 22:49:36,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 281 transitions, 3817 flow [2024-06-27 22:49:36,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 281 transitions, 3775 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 22:49:36,377 INFO L231 Difference]: Finished difference. Result has 197 places, 239 transitions, 3144 flow [2024-06-27 22:49:36,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2969, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3144, PETRI_PLACES=197, PETRI_TRANSITIONS=239} [2024-06-27 22:49:36,378 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 146 predicate places. [2024-06-27 22:49:36,378 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 239 transitions, 3144 flow [2024-06-27 22:49:36,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:36,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:36,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:36,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:49:36,379 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:36,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:36,379 INFO L85 PathProgramCache]: Analyzing trace with hash -524011258, now seen corresponding path program 3 times [2024-06-27 22:49:36,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:36,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528781588] [2024-06-27 22:49:36,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:36,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:39,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:39,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528781588] [2024-06-27 22:49:39,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528781588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:39,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:39,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:49:39,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313972567] [2024-06-27 22:49:39,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:39,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:49:39,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:39,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:49:39,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:49:39,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:39,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 239 transitions, 3144 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:39,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:39,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:39,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:42,334 INFO L124 PetriNetUnfolderBase]: 8448/13098 cut-off events. [2024-06-27 22:49:42,334 INFO L125 PetriNetUnfolderBase]: For 136806/136841 co-relation queries the response was YES. [2024-06-27 22:49:42,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70669 conditions, 13098 events. 8448/13098 cut-off events. For 136806/136841 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 87133 event pairs, 2554 based on Foata normal form. 27/13123 useless extension candidates. Maximal degree in co-relation 70577. Up to 12031 conditions per place. [2024-06-27 22:49:42,443 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 244 selfloop transitions, 34 changer transitions 0/285 dead transitions. [2024-06-27 22:49:42,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 285 transitions, 3886 flow [2024-06-27 22:49:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:49:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:49:42,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-27 22:49:42,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47044917257683216 [2024-06-27 22:49:42,445 INFO L175 Difference]: Start difference. First operand has 197 places, 239 transitions, 3144 flow. Second operand 9 states and 199 transitions. [2024-06-27 22:49:42,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 285 transitions, 3886 flow [2024-06-27 22:49:42,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 285 transitions, 3797 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 22:49:42,745 INFO L231 Difference]: Finished difference. Result has 201 places, 239 transitions, 3130 flow [2024-06-27 22:49:42,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3130, PETRI_PLACES=201, PETRI_TRANSITIONS=239} [2024-06-27 22:49:42,746 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 150 predicate places. [2024-06-27 22:49:42,746 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 239 transitions, 3130 flow [2024-06-27 22:49:42,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:42,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:42,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:42,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:49:42,746 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:42,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:42,747 INFO L85 PathProgramCache]: Analyzing trace with hash 457053897, now seen corresponding path program 1 times [2024-06-27 22:49:42,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:42,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446221007] [2024-06-27 22:49:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:42,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:46,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:46,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446221007] [2024-06-27 22:49:46,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446221007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:46,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:46,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:46,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245838174] [2024-06-27 22:49:46,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:46,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:46,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:46,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:46,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:46,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:46,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 239 transitions, 3130 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:46,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:46,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:46,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:49,398 INFO L124 PetriNetUnfolderBase]: 8505/13365 cut-off events. [2024-06-27 22:49:49,399 INFO L125 PetriNetUnfolderBase]: For 148370/148370 co-relation queries the response was YES. [2024-06-27 22:49:49,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71294 conditions, 13365 events. 8505/13365 cut-off events. For 148370/148370 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 91418 event pairs, 4155 based on Foata normal form. 1/13365 useless extension candidates. Maximal degree in co-relation 71201. Up to 12123 conditions per place. [2024-06-27 22:49:49,564 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 279 selfloop transitions, 36 changer transitions 0/322 dead transitions. [2024-06-27 22:49:49,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 322 transitions, 4420 flow [2024-06-27 22:49:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:49:49,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:49:49,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 22:49:49,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-27 22:49:49,566 INFO L175 Difference]: Start difference. First operand has 201 places, 239 transitions, 3130 flow. Second operand 8 states and 201 transitions. [2024-06-27 22:49:49,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 322 transitions, 4420 flow [2024-06-27 22:49:50,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 322 transitions, 4265 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 22:49:50,065 INFO L231 Difference]: Finished difference. Result has 204 places, 262 transitions, 3436 flow [2024-06-27 22:49:50,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3015, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3436, PETRI_PLACES=204, PETRI_TRANSITIONS=262} [2024-06-27 22:49:50,066 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 153 predicate places. [2024-06-27 22:49:50,066 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 262 transitions, 3436 flow [2024-06-27 22:49:50,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:50,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:50,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:50,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:49:50,067 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:50,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1556472401, now seen corresponding path program 2 times [2024-06-27 22:49:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:50,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229441467] [2024-06-27 22:49:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:50,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:53,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:53,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:53,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229441467] [2024-06-27 22:49:53,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229441467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:53,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:53,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:53,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526274302] [2024-06-27 22:49:53,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:53,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:53,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:53,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:53,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:53,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:53,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 262 transitions, 3436 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:53,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:53,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:53,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:56,630 INFO L124 PetriNetUnfolderBase]: 8642/13550 cut-off events. [2024-06-27 22:49:56,630 INFO L125 PetriNetUnfolderBase]: For 158956/158956 co-relation queries the response was YES. [2024-06-27 22:49:56,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74529 conditions, 13550 events. 8642/13550 cut-off events. For 158956/158956 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 92292 event pairs, 4184 based on Foata normal form. 1/13550 useless extension candidates. Maximal degree in co-relation 74432. Up to 12355 conditions per place. [2024-06-27 22:49:56,783 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 299 selfloop transitions, 42 changer transitions 0/348 dead transitions. [2024-06-27 22:49:56,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 348 transitions, 4758 flow [2024-06-27 22:49:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:49:56,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:49:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 249 transitions. [2024-06-27 22:49:56,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816247582205029 [2024-06-27 22:49:56,785 INFO L175 Difference]: Start difference. First operand has 204 places, 262 transitions, 3436 flow. Second operand 11 states and 249 transitions. [2024-06-27 22:49:56,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 348 transitions, 4758 flow [2024-06-27 22:49:57,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 348 transitions, 4680 flow, removed 39 selfloop flow, removed 0 redundant places. [2024-06-27 22:49:57,397 INFO L231 Difference]: Finished difference. Result has 220 places, 284 transitions, 3816 flow [2024-06-27 22:49:57,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3382, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3816, PETRI_PLACES=220, PETRI_TRANSITIONS=284} [2024-06-27 22:49:57,397 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 169 predicate places. [2024-06-27 22:49:57,398 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 284 transitions, 3816 flow [2024-06-27 22:49:57,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:57,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:57,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:57,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:49:57,398 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:57,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:57,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1860891335, now seen corresponding path program 3 times [2024-06-27 22:49:57,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:57,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451246933] [2024-06-27 22:49:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:57,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:00,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:00,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451246933] [2024-06-27 22:50:00,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451246933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:00,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:00,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:00,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820851311] [2024-06-27 22:50:00,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:00,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:00,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:00,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:00,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:00,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:00,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 284 transitions, 3816 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:00,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:00,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:00,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:03,977 INFO L124 PetriNetUnfolderBase]: 8639/13558 cut-off events. [2024-06-27 22:50:03,977 INFO L125 PetriNetUnfolderBase]: For 174091/174091 co-relation queries the response was YES. [2024-06-27 22:50:04,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77200 conditions, 13558 events. 8639/13558 cut-off events. For 174091/174091 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 92481 event pairs, 4156 based on Foata normal form. 1/13558 useless extension candidates. Maximal degree in co-relation 77094. Up to 12353 conditions per place. [2024-06-27 22:50:04,149 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 291 selfloop transitions, 37 changer transitions 0/335 dead transitions. [2024-06-27 22:50:04,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 335 transitions, 4772 flow [2024-06-27 22:50:04,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:50:04,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:50:04,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-27 22:50:04,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48699763593380613 [2024-06-27 22:50:04,151 INFO L175 Difference]: Start difference. First operand has 220 places, 284 transitions, 3816 flow. Second operand 9 states and 206 transitions. [2024-06-27 22:50:04,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 335 transitions, 4772 flow [2024-06-27 22:50:04,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 335 transitions, 4632 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-06-27 22:50:04,523 INFO L231 Difference]: Finished difference. Result has 225 places, 284 transitions, 3757 flow [2024-06-27 22:50:04,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3676, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3757, PETRI_PLACES=225, PETRI_TRANSITIONS=284} [2024-06-27 22:50:04,524 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 174 predicate places. [2024-06-27 22:50:04,524 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 284 transitions, 3757 flow [2024-06-27 22:50:04,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:04,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:04,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:04,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:50:04,525 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:04,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash 942878933, now seen corresponding path program 4 times [2024-06-27 22:50:04,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:04,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019632652] [2024-06-27 22:50:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:04,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:08,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:08,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019632652] [2024-06-27 22:50:08,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019632652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:08,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:08,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:08,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497253011] [2024-06-27 22:50:08,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:08,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:08,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:08,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:08,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:08,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:08,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 284 transitions, 3757 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:08,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:08,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:08,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:11,658 INFO L124 PetriNetUnfolderBase]: 8709/13648 cut-off events. [2024-06-27 22:50:11,659 INFO L125 PetriNetUnfolderBase]: For 179364/179374 co-relation queries the response was YES. [2024-06-27 22:50:11,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78110 conditions, 13648 events. 8709/13648 cut-off events. For 179364/179374 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 92964 event pairs, 4146 based on Foata normal form. 11/13658 useless extension candidates. Maximal degree in co-relation 78002. Up to 12325 conditions per place. [2024-06-27 22:50:11,799 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 288 selfloop transitions, 65 changer transitions 0/360 dead transitions. [2024-06-27 22:50:11,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 360 transitions, 5118 flow [2024-06-27 22:50:11,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:50:11,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:50:11,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 242 transitions. [2024-06-27 22:50:11,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-27 22:50:11,801 INFO L175 Difference]: Start difference. First operand has 225 places, 284 transitions, 3757 flow. Second operand 11 states and 242 transitions. [2024-06-27 22:50:11,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 360 transitions, 5118 flow [2024-06-27 22:50:12,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 360 transitions, 5030 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:50:12,177 INFO L231 Difference]: Finished difference. Result has 233 places, 306 transitions, 4263 flow [2024-06-27 22:50:12,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3681, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4263, PETRI_PLACES=233, PETRI_TRANSITIONS=306} [2024-06-27 22:50:12,178 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 182 predicate places. [2024-06-27 22:50:12,178 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 306 transitions, 4263 flow [2024-06-27 22:50:12,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:12,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:12,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:12,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:50:12,178 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:12,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:12,179 INFO L85 PathProgramCache]: Analyzing trace with hash -779254127, now seen corresponding path program 5 times [2024-06-27 22:50:12,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:12,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648410820] [2024-06-27 22:50:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:12,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:15,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:15,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648410820] [2024-06-27 22:50:15,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648410820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:15,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:15,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:15,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524324532] [2024-06-27 22:50:15,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:15,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:15,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:15,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:15,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:15,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:15,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 306 transitions, 4263 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:15,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:15,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:15,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:18,892 INFO L124 PetriNetUnfolderBase]: 8732/13679 cut-off events. [2024-06-27 22:50:18,892 INFO L125 PetriNetUnfolderBase]: For 199924/199934 co-relation queries the response was YES. [2024-06-27 22:50:19,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80882 conditions, 13679 events. 8732/13679 cut-off events. For 199924/199934 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 93145 event pairs, 4174 based on Foata normal form. 11/13689 useless extension candidates. Maximal degree in co-relation 80768. Up to 12341 conditions per place. [2024-06-27 22:50:19,073 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 304 selfloop transitions, 53 changer transitions 0/364 dead transitions. [2024-06-27 22:50:19,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 364 transitions, 5499 flow [2024-06-27 22:50:19,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:50:19,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:50:19,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 224 transitions. [2024-06-27 22:50:19,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2024-06-27 22:50:19,077 INFO L175 Difference]: Start difference. First operand has 233 places, 306 transitions, 4263 flow. Second operand 10 states and 224 transitions. [2024-06-27 22:50:19,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 364 transitions, 5499 flow [2024-06-27 22:50:19,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 364 transitions, 5318 flow, removed 88 selfloop flow, removed 2 redundant places. [2024-06-27 22:50:19,660 INFO L231 Difference]: Finished difference. Result has 241 places, 310 transitions, 4303 flow [2024-06-27 22:50:19,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4124, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4303, PETRI_PLACES=241, PETRI_TRANSITIONS=310} [2024-06-27 22:50:19,661 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 190 predicate places. [2024-06-27 22:50:19,661 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 310 transitions, 4303 flow [2024-06-27 22:50:19,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:19,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:19,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:19,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:50:19,661 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:19,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:19,662 INFO L85 PathProgramCache]: Analyzing trace with hash -779248547, now seen corresponding path program 6 times [2024-06-27 22:50:19,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:19,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975744021] [2024-06-27 22:50:19,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:19,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:22,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:22,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:22,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975744021] [2024-06-27 22:50:22,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975744021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:22,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:22,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:22,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204264615] [2024-06-27 22:50:22,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:22,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:22,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:22,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:22,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:22,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:22,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 310 transitions, 4303 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:22,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:22,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:22,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:26,465 INFO L124 PetriNetUnfolderBase]: 8729/13675 cut-off events. [2024-06-27 22:50:26,465 INFO L125 PetriNetUnfolderBase]: For 203220/203230 co-relation queries the response was YES. [2024-06-27 22:50:26,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80994 conditions, 13675 events. 8729/13675 cut-off events. For 203220/203230 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 93136 event pairs, 4146 based on Foata normal form. 11/13685 useless extension candidates. Maximal degree in co-relation 80878. Up to 12339 conditions per place. [2024-06-27 22:50:26,623 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 311 selfloop transitions, 58 changer transitions 0/376 dead transitions. [2024-06-27 22:50:26,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 376 transitions, 5487 flow [2024-06-27 22:50:26,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:50:26,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:50:26,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 266 transitions. [2024-06-27 22:50:26,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716312056737589 [2024-06-27 22:50:26,628 INFO L175 Difference]: Start difference. First operand has 241 places, 310 transitions, 4303 flow. Second operand 12 states and 266 transitions. [2024-06-27 22:50:26,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 376 transitions, 5487 flow [2024-06-27 22:50:27,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 376 transitions, 5333 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 22:50:27,229 INFO L231 Difference]: Finished difference. Result has 248 places, 312 transitions, 4297 flow [2024-06-27 22:50:27,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4149, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4297, PETRI_PLACES=248, PETRI_TRANSITIONS=312} [2024-06-27 22:50:27,230 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 197 predicate places. [2024-06-27 22:50:27,230 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 312 transitions, 4297 flow [2024-06-27 22:50:27,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:27,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:27,230 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] [2024-06-27 22:50:27,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:50:27,230 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:27,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:27,231 INFO L85 PathProgramCache]: Analyzing trace with hash -461408941, now seen corresponding path program 1 times [2024-06-27 22:50:27,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:27,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108094267] [2024-06-27 22:50:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:27,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:31,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:31,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108094267] [2024-06-27 22:50:31,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108094267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:31,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:31,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:50:31,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305951602] [2024-06-27 22:50:31,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:31,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:50:31,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:31,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:50:31,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:50:31,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:31,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 312 transitions, 4297 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:31,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:31,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:31,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:35,068 INFO L124 PetriNetUnfolderBase]: 8798/13690 cut-off events. [2024-06-27 22:50:35,068 INFO L125 PetriNetUnfolderBase]: For 197674/197684 co-relation queries the response was YES. [2024-06-27 22:50:35,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81276 conditions, 13690 events. 8798/13690 cut-off events. For 197674/197684 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 91404 event pairs, 2799 based on Foata normal form. 10/13698 useless extension candidates. Maximal degree in co-relation 81159. Up to 12518 conditions per place. [2024-06-27 22:50:35,241 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 326 selfloop transitions, 47 changer transitions 0/380 dead transitions. [2024-06-27 22:50:35,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 380 transitions, 5515 flow [2024-06-27 22:50:35,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:50:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:50:35,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 229 transitions. [2024-06-27 22:50:35,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48723404255319147 [2024-06-27 22:50:35,243 INFO L175 Difference]: Start difference. First operand has 248 places, 312 transitions, 4297 flow. Second operand 10 states and 229 transitions. [2024-06-27 22:50:35,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 380 transitions, 5515 flow [2024-06-27 22:50:35,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 380 transitions, 5367 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 22:50:35,877 INFO L231 Difference]: Finished difference. Result has 248 places, 320 transitions, 4337 flow [2024-06-27 22:50:35,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4149, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4337, PETRI_PLACES=248, PETRI_TRANSITIONS=320} [2024-06-27 22:50:35,877 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 197 predicate places. [2024-06-27 22:50:35,877 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 320 transitions, 4337 flow [2024-06-27 22:50:35,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:35,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:35,878 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] [2024-06-27 22:50:35,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:50:35,878 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:35,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:35,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1005581891, now seen corresponding path program 2 times [2024-06-27 22:50:35,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:35,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798946900] [2024-06-27 22:50:35,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:35,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:40,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:40,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798946900] [2024-06-27 22:50:40,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798946900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:40,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:40,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:50:40,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641265174] [2024-06-27 22:50:40,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:40,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:50:40,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:40,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:50:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:50:40,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:40,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 320 transitions, 4337 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:40,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:40,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:40,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:43,723 INFO L124 PetriNetUnfolderBase]: 8844/13713 cut-off events. [2024-06-27 22:50:43,723 INFO L125 PetriNetUnfolderBase]: For 201944/201954 co-relation queries the response was YES. [2024-06-27 22:50:43,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81686 conditions, 13713 events. 8844/13713 cut-off events. For 201944/201954 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 91100 event pairs, 2800 based on Foata normal form. 10/13721 useless extension candidates. Maximal degree in co-relation 81568. Up to 12621 conditions per place. [2024-06-27 22:50:43,891 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 319 selfloop transitions, 44 changer transitions 0/370 dead transitions. [2024-06-27 22:50:43,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 370 transitions, 5345 flow [2024-06-27 22:50:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:50:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:50:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 22:50:43,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-27 22:50:43,893 INFO L175 Difference]: Start difference. First operand has 248 places, 320 transitions, 4337 flow. Second operand 8 states and 191 transitions. [2024-06-27 22:50:43,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 370 transitions, 5345 flow [2024-06-27 22:50:44,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 370 transitions, 5223 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 22:50:44,514 INFO L231 Difference]: Finished difference. Result has 251 places, 323 transitions, 4353 flow [2024-06-27 22:50:44,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4220, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4353, PETRI_PLACES=251, PETRI_TRANSITIONS=323} [2024-06-27 22:50:44,515 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 200 predicate places. [2024-06-27 22:50:44,515 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 323 transitions, 4353 flow [2024-06-27 22:50:44,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:44,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:44,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:44,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:50:44,519 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:44,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:44,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1005997601, now seen corresponding path program 3 times [2024-06-27 22:50:44,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:44,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137638474] [2024-06-27 22:50:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:44,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:48,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:48,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137638474] [2024-06-27 22:50:48,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137638474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:48,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:48,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:50:48,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030436740] [2024-06-27 22:50:48,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:48,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:50:48,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:48,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:50:48,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:50:48,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:48,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 323 transitions, 4353 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:48,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:48,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:48,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:51,742 INFO L124 PetriNetUnfolderBase]: 8936/13862 cut-off events. [2024-06-27 22:50:51,742 INFO L125 PetriNetUnfolderBase]: For 207515/207523 co-relation queries the response was YES. [2024-06-27 22:50:51,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82434 conditions, 13862 events. 8936/13862 cut-off events. For 207515/207523 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 92732 event pairs, 2764 based on Foata normal form. 10/13871 useless extension candidates. Maximal degree in co-relation 82316. Up to 12256 conditions per place. [2024-06-27 22:50:51,934 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 345 selfloop transitions, 86 changer transitions 0/438 dead transitions. [2024-06-27 22:50:51,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 438 transitions, 6059 flow [2024-06-27 22:50:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:50:51,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:50:51,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 295 transitions. [2024-06-27 22:50:51,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230496453900709 [2024-06-27 22:50:51,936 INFO L175 Difference]: Start difference. First operand has 251 places, 323 transitions, 4353 flow. Second operand 12 states and 295 transitions. [2024-06-27 22:50:51,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 438 transitions, 6059 flow [2024-06-27 22:50:52,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 438 transitions, 5963 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 22:50:52,600 INFO L231 Difference]: Finished difference. Result has 259 places, 342 transitions, 4711 flow [2024-06-27 22:50:52,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4257, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4711, PETRI_PLACES=259, PETRI_TRANSITIONS=342} [2024-06-27 22:50:52,602 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 208 predicate places. [2024-06-27 22:50:52,602 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 342 transitions, 4711 flow [2024-06-27 22:50:52,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:52,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:52,603 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] [2024-06-27 22:50:52,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:50:52,603 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:52,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:52,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1066226167, now seen corresponding path program 4 times [2024-06-27 22:50:52,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:52,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4525944] [2024-06-27 22:50:52,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:52,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:57,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:57,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4525944] [2024-06-27 22:50:57,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4525944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:57,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:57,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:50:57,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851341301] [2024-06-27 22:50:57,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:57,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:50:57,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:57,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:50:57,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:50:57,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:57,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 342 transitions, 4711 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:57,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:57,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:57,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:00,895 INFO L124 PetriNetUnfolderBase]: 8913/13827 cut-off events. [2024-06-27 22:51:00,895 INFO L125 PetriNetUnfolderBase]: For 216631/216662 co-relation queries the response was YES. [2024-06-27 22:51:01,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83593 conditions, 13827 events. 8913/13827 cut-off events. For 216631/216662 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 92013 event pairs, 2765 based on Foata normal form. 25/13850 useless extension candidates. Maximal degree in co-relation 83473. Up to 12708 conditions per place. [2024-06-27 22:51:01,075 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 334 selfloop transitions, 44 changer transitions 0/385 dead transitions. [2024-06-27 22:51:01,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 385 transitions, 5701 flow [2024-06-27 22:51:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:51:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:51:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 22:51:01,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-27 22:51:01,076 INFO L175 Difference]: Start difference. First operand has 259 places, 342 transitions, 4711 flow. Second operand 8 states and 187 transitions. [2024-06-27 22:51:01,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 385 transitions, 5701 flow [2024-06-27 22:51:01,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 385 transitions, 5519 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-27 22:51:01,990 INFO L231 Difference]: Finished difference. Result has 261 places, 342 transitions, 4623 flow [2024-06-27 22:51:01,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4529, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4623, PETRI_PLACES=261, PETRI_TRANSITIONS=342} [2024-06-27 22:51:01,990 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 210 predicate places. [2024-06-27 22:51:01,991 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 342 transitions, 4623 flow [2024-06-27 22:51:01,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:01,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:01,991 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] [2024-06-27 22:51:01,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:51:01,991 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:01,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash -341402369, now seen corresponding path program 5 times [2024-06-27 22:51:01,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:01,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342714229] [2024-06-27 22:51:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:01,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:05,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:05,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:05,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342714229] [2024-06-27 22:51:05,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342714229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:05,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:05,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:51:05,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457960724] [2024-06-27 22:51:05,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:05,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:51:05,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:05,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:51:05,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:51:05,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:05,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 342 transitions, 4623 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:05,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:05,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:05,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:09,013 INFO L124 PetriNetUnfolderBase]: 9201/14232 cut-off events. [2024-06-27 22:51:09,013 INFO L125 PetriNetUnfolderBase]: For 225010/225039 co-relation queries the response was YES. [2024-06-27 22:51:09,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85903 conditions, 14232 events. 9201/14232 cut-off events. For 225010/225039 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 95125 event pairs, 2742 based on Foata normal form. 26/14257 useless extension candidates. Maximal degree in co-relation 85784. Up to 12465 conditions per place. [2024-06-27 22:51:09,163 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 335 selfloop transitions, 129 changer transitions 0/471 dead transitions. [2024-06-27 22:51:09,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 471 transitions, 6745 flow [2024-06-27 22:51:09,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:51:09,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:51:09,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 299 transitions. [2024-06-27 22:51:09,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301418439716312 [2024-06-27 22:51:09,165 INFO L175 Difference]: Start difference. First operand has 261 places, 342 transitions, 4623 flow. Second operand 12 states and 299 transitions. [2024-06-27 22:51:09,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 471 transitions, 6745 flow [2024-06-27 22:51:09,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 471 transitions, 6631 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 22:51:09,800 INFO L231 Difference]: Finished difference. Result has 271 places, 384 transitions, 5405 flow [2024-06-27 22:51:09,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4533, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5405, PETRI_PLACES=271, PETRI_TRANSITIONS=384} [2024-06-27 22:51:09,800 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 220 predicate places. [2024-06-27 22:51:09,800 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 384 transitions, 5405 flow [2024-06-27 22:51:09,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:09,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:09,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:09,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:51:09,801 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:09,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:09,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1613092245, now seen corresponding path program 6 times [2024-06-27 22:51:09,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:09,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778774738] [2024-06-27 22:51:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:09,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:13,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:13,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778774738] [2024-06-27 22:51:13,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778774738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:13,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:13,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:51:13,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753643520] [2024-06-27 22:51:13,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:13,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:51:13,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:13,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:51:13,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:51:13,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:13,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 384 transitions, 5405 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:13,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:13,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:13,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:17,443 INFO L124 PetriNetUnfolderBase]: 9257/14310 cut-off events. [2024-06-27 22:51:17,443 INFO L125 PetriNetUnfolderBase]: For 250524/250553 co-relation queries the response was YES. [2024-06-27 22:51:17,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89858 conditions, 14310 events. 9257/14310 cut-off events. For 250524/250553 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 95455 event pairs, 2743 based on Foata normal form. 26/14335 useless extension candidates. Maximal degree in co-relation 89734. Up to 12520 conditions per place. [2024-06-27 22:51:17,632 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 348 selfloop transitions, 123 changer transitions 0/478 dead transitions. [2024-06-27 22:51:17,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 478 transitions, 7191 flow [2024-06-27 22:51:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:51:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:51:17,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 287 transitions. [2024-06-27 22:51:17,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088652482269503 [2024-06-27 22:51:17,634 INFO L175 Difference]: Start difference. First operand has 271 places, 384 transitions, 5405 flow. Second operand 12 states and 287 transitions. [2024-06-27 22:51:17,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 478 transitions, 7191 flow [2024-06-27 22:51:18,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 478 transitions, 6809 flow, removed 127 selfloop flow, removed 3 redundant places. [2024-06-27 22:51:18,453 INFO L231 Difference]: Finished difference. Result has 280 places, 390 transitions, 5433 flow [2024-06-27 22:51:18,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5097, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5433, PETRI_PLACES=280, PETRI_TRANSITIONS=390} [2024-06-27 22:51:18,453 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 229 predicate places. [2024-06-27 22:51:18,453 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 390 transitions, 5433 flow [2024-06-27 22:51:18,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:18,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:18,454 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] [2024-06-27 22:51:18,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:51:18,454 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:18,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:18,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1835279475, now seen corresponding path program 7 times [2024-06-27 22:51:18,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:18,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120896812] [2024-06-27 22:51:18,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:18,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:22,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:22,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120896812] [2024-06-27 22:51:22,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120896812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:22,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:22,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:51:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773867752] [2024-06-27 22:51:22,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:22,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:51:22,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:22,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:51:22,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:51:22,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:22,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 390 transitions, 5433 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:22,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:22,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:22,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:25,802 INFO L124 PetriNetUnfolderBase]: 9248/14292 cut-off events. [2024-06-27 22:51:25,802 INFO L125 PetriNetUnfolderBase]: For 250865/250894 co-relation queries the response was YES. [2024-06-27 22:51:26,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88644 conditions, 14292 events. 9248/14292 cut-off events. For 250865/250894 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 95332 event pairs, 2742 based on Foata normal form. 26/14317 useless extension candidates. Maximal degree in co-relation 88519. Up to 12512 conditions per place. [2024-06-27 22:51:26,124 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 337 selfloop transitions, 123 changer transitions 0/467 dead transitions. [2024-06-27 22:51:26,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 467 transitions, 6867 flow [2024-06-27 22:51:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:51:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:51:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-27 22:51:26,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:51:26,125 INFO L175 Difference]: Start difference. First operand has 280 places, 390 transitions, 5433 flow. Second operand 10 states and 250 transitions. [2024-06-27 22:51:26,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 467 transitions, 6867 flow [2024-06-27 22:51:27,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 467 transitions, 6636 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 22:51:27,040 INFO L231 Difference]: Finished difference. Result has 284 places, 390 transitions, 5474 flow [2024-06-27 22:51:27,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5218, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5474, PETRI_PLACES=284, PETRI_TRANSITIONS=390} [2024-06-27 22:51:27,041 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 233 predicate places. [2024-06-27 22:51:27,041 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 390 transitions, 5474 flow [2024-06-27 22:51:27,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:27,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:27,041 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] [2024-06-27 22:51:27,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:51:27,042 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:27,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:27,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1849097973, now seen corresponding path program 1 times [2024-06-27 22:51:27,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:27,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100782988] [2024-06-27 22:51:27,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:27,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:31,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:31,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100782988] [2024-06-27 22:51:31,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100782988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:31,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:31,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:51:31,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620698659] [2024-06-27 22:51:31,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:31,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:51:31,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:31,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:51:31,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:51:32,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:51:32,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 390 transitions, 5474 flow. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:32,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:32,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:51:32,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:35,614 INFO L124 PetriNetUnfolderBase]: 9048/13883 cut-off events. [2024-06-27 22:51:35,615 INFO L125 PetriNetUnfolderBase]: For 250275/250307 co-relation queries the response was YES. [2024-06-27 22:51:35,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86779 conditions, 13883 events. 9048/13883 cut-off events. For 250275/250307 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 92146 event pairs, 1785 based on Foata normal form. 44/13871 useless extension candidates. Maximal degree in co-relation 86653. Up to 12115 conditions per place. [2024-06-27 22:51:35,795 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 358 selfloop transitions, 55 changer transitions 0/469 dead transitions. [2024-06-27 22:51:35,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 469 transitions, 6832 flow [2024-06-27 22:51:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:51:35,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:51:35,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-06-27 22:51:35,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145067698259188 [2024-06-27 22:51:35,798 INFO L175 Difference]: Start difference. First operand has 284 places, 390 transitions, 5474 flow. Second operand 11 states and 266 transitions. [2024-06-27 22:51:35,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 469 transitions, 6832 flow [2024-06-27 22:51:36,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 469 transitions, 6662 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 22:51:36,585 INFO L231 Difference]: Finished difference. Result has 291 places, 391 transitions, 5441 flow [2024-06-27 22:51:36,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5304, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5441, PETRI_PLACES=291, PETRI_TRANSITIONS=391} [2024-06-27 22:51:36,586 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 240 predicate places. [2024-06-27 22:51:36,586 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 391 transitions, 5441 flow [2024-06-27 22:51:36,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:36,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:36,586 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] [2024-06-27 22:51:36,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:51:36,587 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:36,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:36,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1849573203, now seen corresponding path program 2 times [2024-06-27 22:51:36,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:36,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317316600] [2024-06-27 22:51:36,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:36,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:41,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:41,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317316600] [2024-06-27 22:51:41,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317316600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:41,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:41,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:51:41,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231011554] [2024-06-27 22:51:41,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:41,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:51:41,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:41,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:51:41,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:51:41,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:51:41,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 391 transitions, 5441 flow. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:41,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:41,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:51:41,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:45,265 INFO L124 PetriNetUnfolderBase]: 9580/14744 cut-off events. [2024-06-27 22:51:45,265 INFO L125 PetriNetUnfolderBase]: For 257124/257156 co-relation queries the response was YES. [2024-06-27 22:51:45,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91087 conditions, 14744 events. 9580/14744 cut-off events. For 257124/257156 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 98841 event pairs, 1793 based on Foata normal form. 40/14728 useless extension candidates. Maximal degree in co-relation 90961. Up to 12350 conditions per place. [2024-06-27 22:51:45,486 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 357 selfloop transitions, 70 changer transitions 0/483 dead transitions. [2024-06-27 22:51:45,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 483 transitions, 6908 flow [2024-06-27 22:51:45,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:51:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:51:45,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 290 transitions. [2024-06-27 22:51:45,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-27 22:51:45,487 INFO L175 Difference]: Start difference. First operand has 291 places, 391 transitions, 5441 flow. Second operand 12 states and 290 transitions. [2024-06-27 22:51:45,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 483 transitions, 6908 flow [2024-06-27 22:51:46,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 483 transitions, 6798 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 22:51:46,265 INFO L231 Difference]: Finished difference. Result has 296 places, 399 transitions, 5657 flow [2024-06-27 22:51:46,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5340, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5657, PETRI_PLACES=296, PETRI_TRANSITIONS=399} [2024-06-27 22:51:46,266 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 245 predicate places. [2024-06-27 22:51:46,266 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 399 transitions, 5657 flow [2024-06-27 22:51:46,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:46,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:46,267 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] [2024-06-27 22:51:46,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:51:46,267 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:46,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:46,267 INFO L85 PathProgramCache]: Analyzing trace with hash -275052527, now seen corresponding path program 1 times [2024-06-27 22:51:46,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:46,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984126233] [2024-06-27 22:51:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:46,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:49,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:49,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984126233] [2024-06-27 22:51:49,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984126233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:49,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:49,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:49,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403778406] [2024-06-27 22:51:49,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:49,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:49,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:49,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:49,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:49,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 399 transitions, 5657 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:49,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:49,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:49,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:53,606 INFO L124 PetriNetUnfolderBase]: 10012/15534 cut-off events. [2024-06-27 22:51:53,606 INFO L125 PetriNetUnfolderBase]: For 280514/280524 co-relation queries the response was YES. [2024-06-27 22:51:53,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96246 conditions, 15534 events. 10012/15534 cut-off events. For 280514/280524 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 105002 event pairs, 2759 based on Foata normal form. 12/15544 useless extension candidates. Maximal degree in co-relation 96119. Up to 13586 conditions per place. [2024-06-27 22:51:53,849 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 385 selfloop transitions, 74 changer transitions 0/466 dead transitions. [2024-06-27 22:51:53,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 466 transitions, 7123 flow [2024-06-27 22:51:53,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:51:53,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:51:53,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 22:51:53,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-27 22:51:53,851 INFO L175 Difference]: Start difference. First operand has 296 places, 399 transitions, 5657 flow. Second operand 9 states and 214 transitions. [2024-06-27 22:51:53,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 466 transitions, 7123 flow [2024-06-27 22:51:54,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 466 transitions, 6993 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 22:51:54,833 INFO L231 Difference]: Finished difference. Result has 301 places, 404 transitions, 5800 flow [2024-06-27 22:51:54,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5527, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5800, PETRI_PLACES=301, PETRI_TRANSITIONS=404} [2024-06-27 22:51:54,834 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 250 predicate places. [2024-06-27 22:51:54,834 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 404 transitions, 5800 flow [2024-06-27 22:51:54,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:54,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:54,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:54,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:51:54,834 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:54,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:54,835 INFO L85 PathProgramCache]: Analyzing trace with hash 890536613, now seen corresponding path program 2 times [2024-06-27 22:51:54,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:54,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629405762] [2024-06-27 22:51:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:54,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:58,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:58,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629405762] [2024-06-27 22:51:58,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629405762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:58,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:58,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:58,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19530115] [2024-06-27 22:51:58,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:58,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:58,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:58,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:58,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:58,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:58,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 404 transitions, 5800 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:58,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:58,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:58,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:02,412 INFO L124 PetriNetUnfolderBase]: 10088/15633 cut-off events. [2024-06-27 22:52:02,412 INFO L125 PetriNetUnfolderBase]: For 281600/281610 co-relation queries the response was YES. [2024-06-27 22:52:02,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96286 conditions, 15633 events. 10088/15633 cut-off events. For 281600/281610 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 105746 event pairs, 2941 based on Foata normal form. 12/15643 useless extension candidates. Maximal degree in co-relation 96156. Up to 14125 conditions per place. [2024-06-27 22:52:02,628 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 392 selfloop transitions, 62 changer transitions 0/461 dead transitions. [2024-06-27 22:52:02,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 461 transitions, 7090 flow [2024-06-27 22:52:02,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:52:02,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:52:02,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-27 22:52:02,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491725768321513 [2024-06-27 22:52:02,630 INFO L175 Difference]: Start difference. First operand has 301 places, 404 transitions, 5800 flow. Second operand 9 states and 208 transitions. [2024-06-27 22:52:02,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 461 transitions, 7090 flow [2024-06-27 22:52:03,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 461 transitions, 6996 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 22:52:03,525 INFO L231 Difference]: Finished difference. Result has 306 places, 406 transitions, 5878 flow [2024-06-27 22:52:03,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5714, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5878, PETRI_PLACES=306, PETRI_TRANSITIONS=406} [2024-06-27 22:52:03,525 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 255 predicate places. [2024-06-27 22:52:03,525 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 406 transitions, 5878 flow [2024-06-27 22:52:03,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:03,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:03,526 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] [2024-06-27 22:52:03,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:52:03,526 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:52:03,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:03,526 INFO L85 PathProgramCache]: Analyzing trace with hash 890541573, now seen corresponding path program 1 times [2024-06-27 22:52:03,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:03,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743244646] [2024-06-27 22:52:03,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:03,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:07,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:07,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743244646] [2024-06-27 22:52:07,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743244646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:07,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:07,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:52:07,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527652026] [2024-06-27 22:52:07,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:07,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:52:07,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:07,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:52:08,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:52:08,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:52:08,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 406 transitions, 5878 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:08,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:08,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:52:08,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:12,059 INFO L124 PetriNetUnfolderBase]: 10085/15769 cut-off events. [2024-06-27 22:52:12,060 INFO L125 PetriNetUnfolderBase]: For 295846/295846 co-relation queries the response was YES. [2024-06-27 22:52:12,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96552 conditions, 15769 events. 10085/15769 cut-off events. For 295846/295846 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 109032 event pairs, 4441 based on Foata normal form. 1/15769 useless extension candidates. Maximal degree in co-relation 96420. Up to 14171 conditions per place. [2024-06-27 22:52:12,277 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 390 selfloop transitions, 63 changer transitions 0/460 dead transitions. [2024-06-27 22:52:12,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 460 transitions, 7211 flow [2024-06-27 22:52:12,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:52:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:52:12,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 22:52:12,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-27 22:52:12,279 INFO L175 Difference]: Start difference. First operand has 306 places, 406 transitions, 5878 flow. Second operand 8 states and 199 transitions. [2024-06-27 22:52:12,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 460 transitions, 7211 flow [2024-06-27 22:52:13,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 460 transitions, 7015 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 22:52:13,066 INFO L231 Difference]: Finished difference. Result has 306 places, 407 transitions, 5831 flow [2024-06-27 22:52:13,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5690, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5831, PETRI_PLACES=306, PETRI_TRANSITIONS=407} [2024-06-27 22:52:13,067 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 255 predicate places. [2024-06-27 22:52:13,067 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 407 transitions, 5831 flow [2024-06-27 22:52:13,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:13,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:13,068 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] [2024-06-27 22:52:13,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:52:13,068 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:52:13,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:13,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1005827783, now seen corresponding path program 3 times [2024-06-27 22:52:13,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:13,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891804202] [2024-06-27 22:52:13,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:13,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:16,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:16,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891804202] [2024-06-27 22:52:16,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891804202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:16,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:16,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:16,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948445693] [2024-06-27 22:52:16,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:16,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:16,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:16,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:16,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:16,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:52:16,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 407 transitions, 5831 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:16,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:16,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:52:16,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:20,750 INFO L124 PetriNetUnfolderBase]: 10161/15715 cut-off events. [2024-06-27 22:52:20,750 INFO L125 PetriNetUnfolderBase]: For 290663/290673 co-relation queries the response was YES. [2024-06-27 22:52:20,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96941 conditions, 15715 events. 10161/15715 cut-off events. For 290663/290673 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 106221 event pairs, 2940 based on Foata normal form. 12/15725 useless extension candidates. Maximal degree in co-relation 96808. Up to 14402 conditions per place. [2024-06-27 22:52:20,965 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 404 selfloop transitions, 47 changer transitions 0/458 dead transitions. [2024-06-27 22:52:20,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 458 transitions, 7073 flow [2024-06-27 22:52:20,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:52:20,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:52:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 22:52:20,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799054373522459 [2024-06-27 22:52:20,967 INFO L175 Difference]: Start difference. First operand has 306 places, 407 transitions, 5831 flow. Second operand 9 states and 203 transitions. [2024-06-27 22:52:20,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 458 transitions, 7073 flow [2024-06-27 22:52:21,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 458 transitions, 6953 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 22:52:21,804 INFO L231 Difference]: Finished difference. Result has 310 places, 409 transitions, 5851 flow [2024-06-27 22:52:21,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5713, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5851, PETRI_PLACES=310, PETRI_TRANSITIONS=409} [2024-06-27 22:52:21,804 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 259 predicate places. [2024-06-27 22:52:21,805 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 409 transitions, 5851 flow [2024-06-27 22:52:21,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:21,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:21,805 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] [2024-06-27 22:52:21,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:52:21,805 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:52:21,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:21,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1006005723, now seen corresponding path program 2 times [2024-06-27 22:52:21,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:21,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744885077] [2024-06-27 22:52:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:21,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:26,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:26,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744885077] [2024-06-27 22:52:26,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744885077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:26,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:26,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:52:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983436512] [2024-06-27 22:52:26,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:26,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:52:26,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:52:26,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:52:26,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:52:26,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 409 transitions, 5851 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:26,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:26,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:52:26,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:30,528 INFO L124 PetriNetUnfolderBase]: 10192/15933 cut-off events. [2024-06-27 22:52:30,529 INFO L125 PetriNetUnfolderBase]: For 304911/304911 co-relation queries the response was YES. [2024-06-27 22:52:30,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97504 conditions, 15933 events. 10192/15933 cut-off events. For 304911/304911 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 110316 event pairs, 4455 based on Foata normal form. 1/15933 useless extension candidates. Maximal degree in co-relation 97369. Up to 14501 conditions per place. [2024-06-27 22:52:30,741 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 422 selfloop transitions, 49 changer transitions 0/478 dead transitions. [2024-06-27 22:52:30,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 478 transitions, 7383 flow [2024-06-27 22:52:30,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:52:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:52:30,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 247 transitions. [2024-06-27 22:52:30,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47775628626692457 [2024-06-27 22:52:30,749 INFO L175 Difference]: Start difference. First operand has 310 places, 409 transitions, 5851 flow. Second operand 11 states and 247 transitions. [2024-06-27 22:52:30,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 478 transitions, 7383 flow [2024-06-27 22:52:31,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 478 transitions, 7277 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 22:52:31,558 INFO L231 Difference]: Finished difference. Result has 314 places, 413 transitions, 5914 flow [2024-06-27 22:52:31,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5745, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5914, PETRI_PLACES=314, PETRI_TRANSITIONS=413} [2024-06-27 22:52:31,558 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 263 predicate places. [2024-06-27 22:52:31,558 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 413 transitions, 5914 flow [2024-06-27 22:52:31,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:31,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:31,559 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] [2024-06-27 22:52:31,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:52:31,559 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:52:31,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:31,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1005832743, now seen corresponding path program 3 times [2024-06-27 22:52:31,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:31,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432840541] [2024-06-27 22:52:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:31,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:36,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:36,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432840541] [2024-06-27 22:52:36,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432840541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:36,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:36,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:52:36,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535671006] [2024-06-27 22:52:36,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:36,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:52:36,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:36,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:52:36,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:52:36,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:52:36,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 413 transitions, 5914 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:36,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:36,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:52:36,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:40,237 INFO L124 PetriNetUnfolderBase]: 10189/15929 cut-off events. [2024-06-27 22:52:40,238 INFO L125 PetriNetUnfolderBase]: For 306631/306631 co-relation queries the response was YES. [2024-06-27 22:52:40,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97393 conditions, 15929 events. 10189/15929 cut-off events. For 306631/306631 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 110247 event pairs, 4455 based on Foata normal form. 1/15929 useless extension candidates. Maximal degree in co-relation 97257. Up to 14498 conditions per place. [2024-06-27 22:52:40,488 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 408 selfloop transitions, 48 changer transitions 0/463 dead transitions. [2024-06-27 22:52:40,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 463 transitions, 7158 flow [2024-06-27 22:52:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:52:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:52:40,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-27 22:52:40,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48699763593380613 [2024-06-27 22:52:40,490 INFO L175 Difference]: Start difference. First operand has 314 places, 413 transitions, 5914 flow. Second operand 9 states and 206 transitions. [2024-06-27 22:52:40,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 463 transitions, 7158 flow [2024-06-27 22:52:41,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 463 transitions, 7053 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 22:52:41,461 INFO L231 Difference]: Finished difference. Result has 318 places, 413 transitions, 5913 flow [2024-06-27 22:52:41,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5809, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5913, PETRI_PLACES=318, PETRI_TRANSITIONS=413} [2024-06-27 22:52:41,462 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 267 predicate places. [2024-06-27 22:52:41,462 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 413 transitions, 5913 flow [2024-06-27 22:52:41,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:41,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:41,462 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] [2024-06-27 22:52:41,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:52:41,463 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:52:41,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:41,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1063601691, now seen corresponding path program 4 times [2024-06-27 22:52:41,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:41,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365224930] [2024-06-27 22:52:41,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:41,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:44,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:44,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365224930] [2024-06-27 22:52:44,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365224930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:44,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:44,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:44,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441831928] [2024-06-27 22:52:44,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:44,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:44,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:44,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:44,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:44,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:52:44,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 413 transitions, 5913 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:44,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:44,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:52:44,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:49,260 INFO L124 PetriNetUnfolderBase]: 10179/15776 cut-off events. [2024-06-27 22:52:49,260 INFO L125 PetriNetUnfolderBase]: For 299388/299421 co-relation queries the response was YES. [2024-06-27 22:52:49,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96931 conditions, 15776 events. 10179/15776 cut-off events. For 299388/299421 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 106863 event pairs, 2957 based on Foata normal form. 29/15803 useless extension candidates. Maximal degree in co-relation 96794. Up to 14380 conditions per place. [2024-06-27 22:52:49,497 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 407 selfloop transitions, 52 changer transitions 0/466 dead transitions. [2024-06-27 22:52:49,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 466 transitions, 7193 flow [2024-06-27 22:52:49,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:52:49,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:52:49,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2024-06-27 22:52:49,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702127659574468 [2024-06-27 22:52:49,501 INFO L175 Difference]: Start difference. First operand has 318 places, 413 transitions, 5913 flow. Second operand 10 states and 221 transitions. [2024-06-27 22:52:49,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 466 transitions, 7193 flow [2024-06-27 22:52:50,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 466 transitions, 7075 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 22:52:50,517 INFO L231 Difference]: Finished difference. Result has 319 places, 414 transitions, 5928 flow [2024-06-27 22:52:50,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5799, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5928, PETRI_PLACES=319, PETRI_TRANSITIONS=414} [2024-06-27 22:52:50,518 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 268 predicate places. [2024-06-27 22:52:50,518 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 414 transitions, 5928 flow [2024-06-27 22:52:50,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:50,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:50,518 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] [2024-06-27 22:52:50,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:52:50,519 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:52:50,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash -569288887, now seen corresponding path program 4 times [2024-06-27 22:52:50,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:50,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804442054] [2024-06-27 22:52:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:50,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:55,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:55,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804442054] [2024-06-27 22:52:55,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804442054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:55,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:55,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:52:55,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655309644] [2024-06-27 22:52:55,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:55,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:52:55,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:55,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:52:55,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:52:55,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:52:55,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 414 transitions, 5928 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:55,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:55,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:52:55,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:59,963 INFO L124 PetriNetUnfolderBase]: 10244/16001 cut-off events. [2024-06-27 22:52:59,963 INFO L125 PetriNetUnfolderBase]: For 308202/308208 co-relation queries the response was YES. [2024-06-27 22:53:00,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97706 conditions, 16001 events. 10244/16001 cut-off events. For 308202/308208 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 110683 event pairs, 4458 based on Foata normal form. 7/16007 useless extension candidates. Maximal degree in co-relation 97569. Up to 14428 conditions per place. [2024-06-27 22:53:00,261 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 418 selfloop transitions, 65 changer transitions 0/490 dead transitions. [2024-06-27 22:53:00,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 490 transitions, 7666 flow [2024-06-27 22:53:00,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:53:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:53:00,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 269 transitions. [2024-06-27 22:53:00,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769503546099291 [2024-06-27 22:53:00,263 INFO L175 Difference]: Start difference. First operand has 319 places, 414 transitions, 5928 flow. Second operand 12 states and 269 transitions. [2024-06-27 22:53:00,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 490 transitions, 7666 flow [2024-06-27 22:53:01,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 490 transitions, 7577 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 22:53:01,327 INFO L231 Difference]: Finished difference. Result has 324 places, 420 transitions, 6060 flow [2024-06-27 22:53:01,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5839, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6060, PETRI_PLACES=324, PETRI_TRANSITIONS=420} [2024-06-27 22:53:01,328 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 273 predicate places. [2024-06-27 22:53:01,328 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 420 transitions, 6060 flow [2024-06-27 22:53:01,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:01,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:01,328 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] [2024-06-27 22:53:01,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:53:01,329 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:53:01,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1513133553, now seen corresponding path program 5 times [2024-06-27 22:53:01,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:01,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124999370] [2024-06-27 22:53:01,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:01,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:05,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:05,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124999370] [2024-06-27 22:53:05,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124999370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:05,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:05,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:53:05,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176538610] [2024-06-27 22:53:05,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:05,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:53:05,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:05,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:53:05,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:53:05,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:53:05,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 420 transitions, 6060 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:05,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:05,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:53:05,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:10,069 INFO L124 PetriNetUnfolderBase]: 10241/16000 cut-off events. [2024-06-27 22:53:10,070 INFO L125 PetriNetUnfolderBase]: For 311794/311800 co-relation queries the response was YES. [2024-06-27 22:53:10,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97836 conditions, 16000 events. 10241/16000 cut-off events. For 311794/311800 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 110759 event pairs, 4444 based on Foata normal form. 7/16006 useless extension candidates. Maximal degree in co-relation 97698. Up to 14425 conditions per place. [2024-06-27 22:53:10,332 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 402 selfloop transitions, 64 changer transitions 0/473 dead transitions. [2024-06-27 22:53:10,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 473 transitions, 7452 flow [2024-06-27 22:53:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:53:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:53:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 224 transitions. [2024-06-27 22:53:10,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2024-06-27 22:53:10,334 INFO L175 Difference]: Start difference. First operand has 324 places, 420 transitions, 6060 flow. Second operand 10 states and 224 transitions. [2024-06-27 22:53:10,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 473 transitions, 7452 flow [2024-06-27 22:53:11,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 473 transitions, 7308 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 22:53:11,710 INFO L231 Difference]: Finished difference. Result has 325 places, 420 transitions, 6054 flow [2024-06-27 22:53:11,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5918, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6054, PETRI_PLACES=325, PETRI_TRANSITIONS=420} [2024-06-27 22:53:11,712 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 274 predicate places. [2024-06-27 22:53:11,712 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 420 transitions, 6054 flow [2024-06-27 22:53:11,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:11,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:11,712 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] [2024-06-27 22:53:11,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:53:11,713 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:53:11,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:11,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1849282237, now seen corresponding path program 6 times [2024-06-27 22:53:11,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:11,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532464264] [2024-06-27 22:53:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:11,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:16,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:16,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532464264] [2024-06-27 22:53:16,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532464264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:16,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:16,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:53:16,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893481092] [2024-06-27 22:53:16,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:16,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:53:16,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:16,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:53:16,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:53:16,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:53:16,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 420 transitions, 6054 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:16,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:16,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:53:16,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:21,074 INFO L124 PetriNetUnfolderBase]: 10238/16004 cut-off events. [2024-06-27 22:53:21,075 INFO L125 PetriNetUnfolderBase]: For 310234/310240 co-relation queries the response was YES. [2024-06-27 22:53:21,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97675 conditions, 16004 events. 10238/16004 cut-off events. For 310234/310240 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 110874 event pairs, 4444 based on Foata normal form. 7/16010 useless extension candidates. Maximal degree in co-relation 97537. Up to 14422 conditions per place. [2024-06-27 22:53:21,422 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 404 selfloop transitions, 68 changer transitions 0/479 dead transitions. [2024-06-27 22:53:21,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 479 transitions, 7404 flow [2024-06-27 22:53:21,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:53:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:53:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 240 transitions. [2024-06-27 22:53:21,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46421663442940037 [2024-06-27 22:53:21,424 INFO L175 Difference]: Start difference. First operand has 325 places, 420 transitions, 6054 flow. Second operand 11 states and 240 transitions. [2024-06-27 22:53:21,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 479 transitions, 7404 flow [2024-06-27 22:53:22,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 479 transitions, 7245 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 22:53:22,677 INFO L231 Difference]: Finished difference. Result has 326 places, 421 transitions, 6060 flow [2024-06-27 22:53:22,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5905, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6060, PETRI_PLACES=326, PETRI_TRANSITIONS=421} [2024-06-27 22:53:22,678 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 275 predicate places. [2024-06-27 22:53:22,678 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 421 transitions, 6060 flow [2024-06-27 22:53:22,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:22,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:22,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:22,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:53:22,679 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:53:22,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:22,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1280473326, now seen corresponding path program 1 times [2024-06-27 22:53:22,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:22,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330422699] [2024-06-27 22:53:22,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:22,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:22,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:22,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:22,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330422699] [2024-06-27 22:53:22,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330422699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:22,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:22,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:53:22,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117833455] [2024-06-27 22:53:22,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:22,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:53:22,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:22,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:53:22,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:53:22,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 22:53:22,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 421 transitions, 6060 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:22,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:22,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 22:53:22,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:24,845 INFO L124 PetriNetUnfolderBase]: 5811/10241 cut-off events. [2024-06-27 22:53:24,845 INFO L125 PetriNetUnfolderBase]: For 232098/232842 co-relation queries the response was YES. [2024-06-27 22:53:24,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55904 conditions, 10241 events. 5811/10241 cut-off events. For 232098/232842 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 80714 event pairs, 967 based on Foata normal form. 454/10244 useless extension candidates. Maximal degree in co-relation 55767. Up to 3899 conditions per place. [2024-06-27 22:53:24,987 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 142 selfloop transitions, 88 changer transitions 0/437 dead transitions. [2024-06-27 22:53:24,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 437 transitions, 6764 flow [2024-06-27 22:53:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:53:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:53:24,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-06-27 22:53:24,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-27 22:53:24,988 INFO L175 Difference]: Start difference. First operand has 326 places, 421 transitions, 6060 flow. Second operand 4 states and 120 transitions. [2024-06-27 22:53:24,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 437 transitions, 6764 flow [2024-06-27 22:53:25,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 437 transitions, 6615 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 22:53:25,654 INFO L231 Difference]: Finished difference. Result has 322 places, 406 transitions, 6151 flow [2024-06-27 22:53:25,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5749, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=6151, PETRI_PLACES=322, PETRI_TRANSITIONS=406} [2024-06-27 22:53:25,654 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 271 predicate places. [2024-06-27 22:53:25,654 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 406 transitions, 6151 flow [2024-06-27 22:53:25,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:25,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:25,655 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] [2024-06-27 22:53:25,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:53:25,655 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:53:25,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:25,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1545797550, now seen corresponding path program 1 times [2024-06-27 22:53:25,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:25,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59455] [2024-06-27 22:53:25,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:25,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:30,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:30,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59455] [2024-06-27 22:53:30,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:30,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:30,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:53:30,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576049294] [2024-06-27 22:53:30,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:30,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:53:30,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:30,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:53:30,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:53:30,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:53:30,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 406 transitions, 6151 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:30,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:30,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:53:30,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:34,809 INFO L124 PetriNetUnfolderBase]: 8714/13973 cut-off events. [2024-06-27 22:53:34,810 INFO L125 PetriNetUnfolderBase]: For 265633/265639 co-relation queries the response was YES. [2024-06-27 22:53:34,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85178 conditions, 13973 events. 8714/13973 cut-off events. For 265633/265639 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 96875 event pairs, 3252 based on Foata normal form. 2/13972 useless extension candidates. Maximal degree in co-relation 85041. Up to 12409 conditions per place. [2024-06-27 22:53:35,005 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 343 selfloop transitions, 96 changer transitions 7/453 dead transitions. [2024-06-27 22:53:35,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 453 transitions, 7520 flow [2024-06-27 22:53:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:35,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 200 transitions. [2024-06-27 22:53:35,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728132387706856 [2024-06-27 22:53:35,006 INFO L175 Difference]: Start difference. First operand has 322 places, 406 transitions, 6151 flow. Second operand 9 states and 200 transitions. [2024-06-27 22:53:35,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 453 transitions, 7520 flow [2024-06-27 22:53:36,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 453 transitions, 7508 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 22:53:36,078 INFO L231 Difference]: Finished difference. Result has 330 places, 417 transitions, 6530 flow [2024-06-27 22:53:36,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6143, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6530, PETRI_PLACES=330, PETRI_TRANSITIONS=417} [2024-06-27 22:53:36,078 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 279 predicate places. [2024-06-27 22:53:36,078 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 417 transitions, 6530 flow [2024-06-27 22:53:36,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:36,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:36,079 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] [2024-06-27 22:53:36,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:53:36,079 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:53:36,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:36,080 INFO L85 PathProgramCache]: Analyzing trace with hash -350666394, now seen corresponding path program 2 times [2024-06-27 22:53:36,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:36,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672859835] [2024-06-27 22:53:36,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:36,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:39,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:39,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672859835] [2024-06-27 22:53:39,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672859835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:39,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:39,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:53:39,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469301256] [2024-06-27 22:53:39,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:39,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:53:39,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:39,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:53:39,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:53:39,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:53:39,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 417 transitions, 6530 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:39,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:39,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:53:39,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:42,929 INFO L124 PetriNetUnfolderBase]: 8076/12894 cut-off events. [2024-06-27 22:53:42,929 INFO L125 PetriNetUnfolderBase]: For 268852/268858 co-relation queries the response was YES. [2024-06-27 22:53:43,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78567 conditions, 12894 events. 8076/12894 cut-off events. For 268852/268858 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 87058 event pairs, 3104 based on Foata normal form. 6/12897 useless extension candidates. Maximal degree in co-relation 78426. Up to 11351 conditions per place. [2024-06-27 22:53:43,127 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 302 selfloop transitions, 162 changer transitions 0/471 dead transitions. [2024-06-27 22:53:43,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 471 transitions, 8069 flow [2024-06-27 22:53:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:43,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:43,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2024-06-27 22:53:43,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657210401891253 [2024-06-27 22:53:43,128 INFO L175 Difference]: Start difference. First operand has 330 places, 417 transitions, 6530 flow. Second operand 9 states and 197 transitions. [2024-06-27 22:53:43,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 471 transitions, 8069 flow [2024-06-27 22:53:43,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 471 transitions, 7843 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 22:53:43,924 INFO L231 Difference]: Finished difference. Result has 336 places, 435 transitions, 7051 flow [2024-06-27 22:53:43,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6337, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7051, PETRI_PLACES=336, PETRI_TRANSITIONS=435} [2024-06-27 22:53:43,926 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 285 predicate places. [2024-06-27 22:53:43,926 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 435 transitions, 7051 flow [2024-06-27 22:53:43,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:43,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:43,926 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] [2024-06-27 22:53:43,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:53:43,927 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:53:43,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:43,927 INFO L85 PathProgramCache]: Analyzing trace with hash -776008566, now seen corresponding path program 3 times [2024-06-27 22:53:43,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:43,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797479850] [2024-06-27 22:53:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:43,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:46,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:46,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797479850] [2024-06-27 22:53:46,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797479850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:46,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:46,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:53:46,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031978177] [2024-06-27 22:53:46,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:46,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:53:46,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:46,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:53:46,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:53:47,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:53:47,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 435 transitions, 7051 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:47,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:47,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:53:47,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:51,059 INFO L124 PetriNetUnfolderBase]: 8164/13016 cut-off events. [2024-06-27 22:53:51,059 INFO L125 PetriNetUnfolderBase]: For 276322/276328 co-relation queries the response was YES. [2024-06-27 22:53:51,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80127 conditions, 13016 events. 8164/13016 cut-off events. For 276322/276328 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 87660 event pairs, 3091 based on Foata normal form. 6/13019 useless extension candidates. Maximal degree in co-relation 79983. Up to 11617 conditions per place. [2024-06-27 22:53:51,210 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 344 selfloop transitions, 130 changer transitions 0/481 dead transitions. [2024-06-27 22:53:51,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 481 transitions, 8495 flow [2024-06-27 22:53:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:51,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:51,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-27 22:53:51,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4515366430260047 [2024-06-27 22:53:51,211 INFO L175 Difference]: Start difference. First operand has 336 places, 435 transitions, 7051 flow. Second operand 9 states and 191 transitions. [2024-06-27 22:53:51,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 481 transitions, 8495 flow [2024-06-27 22:53:51,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 481 transitions, 8271 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-27 22:53:51,987 INFO L231 Difference]: Finished difference. Result has 340 places, 451 transitions, 7450 flow [2024-06-27 22:53:51,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6857, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7450, PETRI_PLACES=340, PETRI_TRANSITIONS=451} [2024-06-27 22:53:51,988 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 289 predicate places. [2024-06-27 22:53:51,988 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 451 transitions, 7450 flow [2024-06-27 22:53:51,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:51,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:51,988 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] [2024-06-27 22:53:51,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:53:51,989 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:53:51,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:51,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1005076264, now seen corresponding path program 4 times [2024-06-27 22:53:51,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:51,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366468121] [2024-06-27 22:53:51,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:51,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:55,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:55,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:55,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366468121] [2024-06-27 22:53:55,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366468121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:55,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:55,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:53:55,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821590556] [2024-06-27 22:53:55,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:55,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:53:55,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:55,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:53:55,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:53:55,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:53:55,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 451 transitions, 7450 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:55,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:55,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:53:55,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:59,264 INFO L124 PetriNetUnfolderBase]: 8149/12996 cut-off events. [2024-06-27 22:53:59,264 INFO L125 PetriNetUnfolderBase]: For 273244/273250 co-relation queries the response was YES. [2024-06-27 22:53:59,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79998 conditions, 12996 events. 8149/12996 cut-off events. For 273244/273250 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 87604 event pairs, 3080 based on Foata normal form. 6/12999 useless extension candidates. Maximal degree in co-relation 79852. Up to 11499 conditions per place. [2024-06-27 22:53:59,464 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 324 selfloop transitions, 159 changer transitions 0/490 dead transitions. [2024-06-27 22:53:59,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 490 transitions, 8655 flow [2024-06-27 22:53:59,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:53:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:53:59,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 245 transitions. [2024-06-27 22:53:59,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43439716312056736 [2024-06-27 22:53:59,466 INFO L175 Difference]: Start difference. First operand has 340 places, 451 transitions, 7450 flow. Second operand 12 states and 245 transitions. [2024-06-27 22:53:59,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 490 transitions, 8655 flow [2024-06-27 22:54:00,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 490 transitions, 8380 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 22:54:00,650 INFO L231 Difference]: Finished difference. Result has 344 places, 451 transitions, 7534 flow [2024-06-27 22:54:00,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7175, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7534, PETRI_PLACES=344, PETRI_TRANSITIONS=451} [2024-06-27 22:54:00,651 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 293 predicate places. [2024-06-27 22:54:00,651 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 451 transitions, 7534 flow [2024-06-27 22:54:00,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:00,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:00,651 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] [2024-06-27 22:54:00,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:54:00,652 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:00,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:00,652 INFO L85 PathProgramCache]: Analyzing trace with hash -978925464, now seen corresponding path program 5 times [2024-06-27 22:54:00,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:00,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170899930] [2024-06-27 22:54:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:00,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:04,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:04,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170899930] [2024-06-27 22:54:04,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170899930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:04,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:04,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:54:04,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256062526] [2024-06-27 22:54:04,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:04,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:54:04,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:04,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:54:04,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:54:04,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:04,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 451 transitions, 7534 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:04,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:04,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:04,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:09,414 INFO L124 PetriNetUnfolderBase]: 8250/13161 cut-off events. [2024-06-27 22:54:09,414 INFO L125 PetriNetUnfolderBase]: For 278614/278620 co-relation queries the response was YES. [2024-06-27 22:54:09,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81716 conditions, 13161 events. 8250/13161 cut-off events. For 278614/278620 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 88902 event pairs, 3096 based on Foata normal form. 4/13162 useless extension candidates. Maximal degree in co-relation 81571. Up to 11151 conditions per place. [2024-06-27 22:54:09,622 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 295 selfloop transitions, 219 changer transitions 0/521 dead transitions. [2024-06-27 22:54:09,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 521 transitions, 9657 flow [2024-06-27 22:54:09,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:54:09,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:54:09,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 276 transitions. [2024-06-27 22:54:09,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45171849427168576 [2024-06-27 22:54:09,623 INFO L175 Difference]: Start difference. First operand has 344 places, 451 transitions, 7534 flow. Second operand 13 states and 276 transitions. [2024-06-27 22:54:09,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 521 transitions, 9657 flow [2024-06-27 22:54:10,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 521 transitions, 9173 flow, removed 40 selfloop flow, removed 15 redundant places. [2024-06-27 22:54:10,527 INFO L231 Difference]: Finished difference. Result has 344 places, 471 transitions, 8002 flow [2024-06-27 22:54:10,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7080, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8002, PETRI_PLACES=344, PETRI_TRANSITIONS=471} [2024-06-27 22:54:10,528 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 293 predicate places. [2024-06-27 22:54:10,528 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 471 transitions, 8002 flow [2024-06-27 22:54:10,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:10,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:10,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:10,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:54:10,529 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:10,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash -978805494, now seen corresponding path program 6 times [2024-06-27 22:54:10,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:10,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732435055] [2024-06-27 22:54:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:10,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:14,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:14,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732435055] [2024-06-27 22:54:14,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732435055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:14,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:14,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:54:14,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137353852] [2024-06-27 22:54:14,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:14,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:54:14,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:14,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:54:14,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:54:14,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:14,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 471 transitions, 8002 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:14,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:14,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:14,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:18,926 INFO L124 PetriNetUnfolderBase]: 8298/13230 cut-off events. [2024-06-27 22:54:18,926 INFO L125 PetriNetUnfolderBase]: For 277892/277898 co-relation queries the response was YES. [2024-06-27 22:54:19,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82749 conditions, 13230 events. 8298/13230 cut-off events. For 277892/277898 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 89323 event pairs, 3091 based on Foata normal form. 4/13231 useless extension candidates. Maximal degree in co-relation 82604. Up to 11703 conditions per place. [2024-06-27 22:54:19,113 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 361 selfloop transitions, 154 changer transitions 0/522 dead transitions. [2024-06-27 22:54:19,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 522 transitions, 9400 flow [2024-06-27 22:54:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:54:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:54:19,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 257 transitions. [2024-06-27 22:54:19,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4206219312602291 [2024-06-27 22:54:19,114 INFO L175 Difference]: Start difference. First operand has 344 places, 471 transitions, 8002 flow. Second operand 13 states and 257 transitions. [2024-06-27 22:54:19,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 522 transitions, 9400 flow [2024-06-27 22:54:20,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 522 transitions, 9078 flow, removed 138 selfloop flow, removed 3 redundant places. [2024-06-27 22:54:20,093 INFO L231 Difference]: Finished difference. Result has 354 places, 482 transitions, 8177 flow [2024-06-27 22:54:20,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7726, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8177, PETRI_PLACES=354, PETRI_TRANSITIONS=482} [2024-06-27 22:54:20,094 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 303 predicate places. [2024-06-27 22:54:20,094 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 482 transitions, 8177 flow [2024-06-27 22:54:20,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:20,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:20,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:20,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:54:20,095 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:20,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:20,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1277987598, now seen corresponding path program 7 times [2024-06-27 22:54:20,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:20,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121321699] [2024-06-27 22:54:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:20,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:23,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:23,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121321699] [2024-06-27 22:54:23,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121321699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:23,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:23,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:54:23,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842068520] [2024-06-27 22:54:23,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:23,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:54:23,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:23,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:54:23,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:54:24,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:24,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 482 transitions, 8177 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:24,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:24,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:24,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:29,017 INFO L124 PetriNetUnfolderBase]: 8322/13275 cut-off events. [2024-06-27 22:54:29,017 INFO L125 PetriNetUnfolderBase]: For 280838/280844 co-relation queries the response was YES. [2024-06-27 22:54:29,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82951 conditions, 13275 events. 8322/13275 cut-off events. For 280838/280844 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 89777 event pairs, 3088 based on Foata normal form. 4/13276 useless extension candidates. Maximal degree in co-relation 82803. Up to 11205 conditions per place. [2024-06-27 22:54:29,190 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 275 selfloop transitions, 255 changer transitions 0/537 dead transitions. [2024-06-27 22:54:29,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 537 transitions, 9944 flow [2024-06-27 22:54:29,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:54:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:54:29,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 275 transitions. [2024-06-27 22:54:29,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4500818330605565 [2024-06-27 22:54:29,191 INFO L175 Difference]: Start difference. First operand has 354 places, 482 transitions, 8177 flow. Second operand 13 states and 275 transitions. [2024-06-27 22:54:29,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 537 transitions, 9944 flow [2024-06-27 22:54:30,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 537 transitions, 9617 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 22:54:30,085 INFO L231 Difference]: Finished difference. Result has 359 places, 488 transitions, 8451 flow [2024-06-27 22:54:30,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7850, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8451, PETRI_PLACES=359, PETRI_TRANSITIONS=488} [2024-06-27 22:54:30,086 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 308 predicate places. [2024-06-27 22:54:30,086 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 488 transitions, 8451 flow [2024-06-27 22:54:30,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:30,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:30,086 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] [2024-06-27 22:54:30,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:54:30,086 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:30,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:30,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1277689068, now seen corresponding path program 8 times [2024-06-27 22:54:30,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:30,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497466385] [2024-06-27 22:54:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:30,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:33,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:33,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497466385] [2024-06-27 22:54:33,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497466385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:33,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:33,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:54:33,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264507625] [2024-06-27 22:54:33,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:33,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:54:33,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:33,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:54:33,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:54:33,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:33,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 488 transitions, 8451 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:33,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:33,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:33,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:38,707 INFO L124 PetriNetUnfolderBase]: 8361/13340 cut-off events. [2024-06-27 22:54:38,707 INFO L125 PetriNetUnfolderBase]: For 294689/294695 co-relation queries the response was YES. [2024-06-27 22:54:39,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84133 conditions, 13340 events. 8361/13340 cut-off events. For 294689/294695 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 90318 event pairs, 3088 based on Foata normal form. 4/13341 useless extension candidates. Maximal degree in co-relation 83982. Up to 11235 conditions per place. [2024-06-27 22:54:39,211 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 273 selfloop transitions, 258 changer transitions 0/538 dead transitions. [2024-06-27 22:54:39,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 538 transitions, 10135 flow [2024-06-27 22:54:39,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:54:39,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:54:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 273 transitions. [2024-06-27 22:54:39,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44680851063829785 [2024-06-27 22:54:39,213 INFO L175 Difference]: Start difference. First operand has 359 places, 488 transitions, 8451 flow. Second operand 13 states and 273 transitions. [2024-06-27 22:54:39,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 538 transitions, 10135 flow [2024-06-27 22:54:40,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 538 transitions, 9690 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 22:54:40,157 INFO L231 Difference]: Finished difference. Result has 367 places, 494 transitions, 8668 flow [2024-06-27 22:54:40,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8031, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8668, PETRI_PLACES=367, PETRI_TRANSITIONS=494} [2024-06-27 22:54:40,157 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 316 predicate places. [2024-06-27 22:54:40,157 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 494 transitions, 8668 flow [2024-06-27 22:54:40,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:40,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:40,158 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] [2024-06-27 22:54:40,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:54:40,158 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:40,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:40,159 INFO L85 PathProgramCache]: Analyzing trace with hash -969551064, now seen corresponding path program 9 times [2024-06-27 22:54:40,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:40,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859094802] [2024-06-27 22:54:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:40,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:43,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:43,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859094802] [2024-06-27 22:54:43,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859094802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:43,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:43,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:54:43,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910486576] [2024-06-27 22:54:43,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:43,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:54:43,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:43,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:54:43,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:54:43,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:43,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 494 transitions, 8668 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:43,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:43,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:43,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:48,803 INFO L124 PetriNetUnfolderBase]: 8472/13515 cut-off events. [2024-06-27 22:54:48,804 INFO L125 PetriNetUnfolderBase]: For 317569/317575 co-relation queries the response was YES. [2024-06-27 22:54:48,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85974 conditions, 13515 events. 8472/13515 cut-off events. For 317569/317575 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 91474 event pairs, 3095 based on Foata normal form. 4/13516 useless extension candidates. Maximal degree in co-relation 85818. Up to 11760 conditions per place. [2024-06-27 22:54:49,012 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 367 selfloop transitions, 191 changer transitions 0/565 dead transitions. [2024-06-27 22:54:49,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 565 transitions, 10668 flow [2024-06-27 22:54:49,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 22:54:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 22:54:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 296 transitions. [2024-06-27 22:54:49,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198581560283688 [2024-06-27 22:54:49,013 INFO L175 Difference]: Start difference. First operand has 367 places, 494 transitions, 8668 flow. Second operand 15 states and 296 transitions. [2024-06-27 22:54:49,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 565 transitions, 10668 flow [2024-06-27 22:54:50,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 565 transitions, 10231 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:54:50,043 INFO L231 Difference]: Finished difference. Result has 376 places, 516 transitions, 9044 flow [2024-06-27 22:54:50,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8271, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9044, PETRI_PLACES=376, PETRI_TRANSITIONS=516} [2024-06-27 22:54:50,044 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 325 predicate places. [2024-06-27 22:54:50,044 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 516 transitions, 9044 flow [2024-06-27 22:54:50,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:50,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:50,045 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] [2024-06-27 22:54:50,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:54:50,045 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:50,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:50,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1273969998, now seen corresponding path program 10 times [2024-06-27 22:54:50,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:50,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887742357] [2024-06-27 22:54:50,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:50,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:53,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:53,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887742357] [2024-06-27 22:54:53,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887742357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:53,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:53,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:54:53,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798806095] [2024-06-27 22:54:53,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:53,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:54:53,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:53,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:54:53,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:54:53,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:53,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 516 transitions, 9044 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:53,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:53,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:53,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:58,738 INFO L124 PetriNetUnfolderBase]: 8467/13493 cut-off events. [2024-06-27 22:54:58,739 INFO L125 PetriNetUnfolderBase]: For 312743/312749 co-relation queries the response was YES. [2024-06-27 22:54:58,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85744 conditions, 13493 events. 8467/13493 cut-off events. For 312743/312749 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 91214 event pairs, 3095 based on Foata normal form. 4/13494 useless extension candidates. Maximal degree in co-relation 85586. Up to 11758 conditions per place. [2024-06-27 22:54:58,924 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 366 selfloop transitions, 182 changer transitions 0/555 dead transitions. [2024-06-27 22:54:58,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 555 transitions, 10500 flow [2024-06-27 22:54:58,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:54:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:54:58,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 244 transitions. [2024-06-27 22:54:58,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326241134751773 [2024-06-27 22:54:58,926 INFO L175 Difference]: Start difference. First operand has 376 places, 516 transitions, 9044 flow. Second operand 12 states and 244 transitions. [2024-06-27 22:54:58,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 555 transitions, 10500 flow [2024-06-27 22:55:00,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 555 transitions, 10288 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:00,100 INFO L231 Difference]: Finished difference. Result has 383 places, 516 transitions, 9207 flow [2024-06-27 22:55:00,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8832, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9207, PETRI_PLACES=383, PETRI_TRANSITIONS=516} [2024-06-27 22:55:00,101 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 332 predicate places. [2024-06-27 22:55:00,101 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 516 transitions, 9207 flow [2024-06-27 22:55:00,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:00,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:00,101 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] [2024-06-27 22:55:00,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:55:00,101 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:00,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1894920696, now seen corresponding path program 11 times [2024-06-27 22:55:00,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:00,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289777999] [2024-06-27 22:55:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:00,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:03,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:03,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289777999] [2024-06-27 22:55:03,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289777999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:03,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:03,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:55:03,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705128577] [2024-06-27 22:55:03,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:03,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:55:03,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:03,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:55:03,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:55:03,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:03,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 516 transitions, 9207 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:03,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:03,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:03,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:08,713 INFO L124 PetriNetUnfolderBase]: 8521/13591 cut-off events. [2024-06-27 22:55:08,713 INFO L125 PetriNetUnfolderBase]: For 327677/327704 co-relation queries the response was YES. [2024-06-27 22:55:08,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86715 conditions, 13591 events. 8521/13591 cut-off events. For 327677/327704 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 92076 event pairs, 3128 based on Foata normal form. 19/13607 useless extension candidates. Maximal degree in co-relation 86556. Up to 11652 conditions per place. [2024-06-27 22:55:08,903 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 341 selfloop transitions, 226 changer transitions 0/574 dead transitions. [2024-06-27 22:55:08,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 574 transitions, 11204 flow [2024-06-27 22:55:08,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 22:55:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 22:55:08,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 295 transitions. [2024-06-27 22:55:08,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41843971631205673 [2024-06-27 22:55:08,905 INFO L175 Difference]: Start difference. First operand has 383 places, 516 transitions, 9207 flow. Second operand 15 states and 295 transitions. [2024-06-27 22:55:08,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 574 transitions, 11204 flow [2024-06-27 22:55:10,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 574 transitions, 10796 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-27 22:55:10,062 INFO L231 Difference]: Finished difference. Result has 389 places, 526 transitions, 9505 flow [2024-06-27 22:55:10,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8809, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9505, PETRI_PLACES=389, PETRI_TRANSITIONS=526} [2024-06-27 22:55:10,063 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 338 predicate places. [2024-06-27 22:55:10,063 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 526 transitions, 9505 flow [2024-06-27 22:55:10,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:10,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:10,063 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] [2024-06-27 22:55:10,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:55:10,064 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:10,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:10,064 INFO L85 PathProgramCache]: Analyzing trace with hash -77860174, now seen corresponding path program 12 times [2024-06-27 22:55:10,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:10,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226284849] [2024-06-27 22:55:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:10,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:13,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:13,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226284849] [2024-06-27 22:55:13,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226284849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:13,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:13,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:55:13,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937696488] [2024-06-27 22:55:13,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:13,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:55:13,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:13,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:55:13,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:55:13,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:13,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 526 transitions, 9505 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:13,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:13,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:13,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:18,414 INFO L124 PetriNetUnfolderBase]: 8516/13581 cut-off events. [2024-06-27 22:55:18,415 INFO L125 PetriNetUnfolderBase]: For 328321/328348 co-relation queries the response was YES. [2024-06-27 22:55:18,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86874 conditions, 13581 events. 8516/13581 cut-off events. For 328321/328348 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 92010 event pairs, 3130 based on Foata normal form. 19/13597 useless extension candidates. Maximal degree in co-relation 86712. Up to 11650 conditions per place. [2024-06-27 22:55:18,595 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 340 selfloop transitions, 218 changer transitions 0/565 dead transitions. [2024-06-27 22:55:18,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 565 transitions, 11141 flow [2024-06-27 22:55:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:55:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:55:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 243 transitions. [2024-06-27 22:55:18,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308510638297872 [2024-06-27 22:55:18,597 INFO L175 Difference]: Start difference. First operand has 389 places, 526 transitions, 9505 flow. Second operand 12 states and 243 transitions. [2024-06-27 22:55:18,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 565 transitions, 11141 flow [2024-06-27 22:55:19,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 565 transitions, 10644 flow, removed 33 selfloop flow, removed 11 redundant places. [2024-06-27 22:55:19,842 INFO L231 Difference]: Finished difference. Result has 390 places, 526 transitions, 9455 flow [2024-06-27 22:55:19,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9008, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9455, PETRI_PLACES=390, PETRI_TRANSITIONS=526} [2024-06-27 22:55:19,842 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 339 predicate places. [2024-06-27 22:55:19,843 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 526 transitions, 9455 flow [2024-06-27 22:55:19,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:19,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:19,843 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] [2024-06-27 22:55:19,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:55:19,843 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:19,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1033452700, now seen corresponding path program 1 times [2024-06-27 22:55:19,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:19,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023112268] [2024-06-27 22:55:19,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:19,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:24,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:24,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:24,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023112268] [2024-06-27 22:55:24,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023112268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:24,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:24,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:55:24,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412314854] [2024-06-27 22:55:24,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:24,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:55:24,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:24,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:55:24,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:55:24,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:24,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 526 transitions, 9455 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:24,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:24,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:24,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:29,266 INFO L124 PetriNetUnfolderBase]: 8578/13674 cut-off events. [2024-06-27 22:55:29,267 INFO L125 PetriNetUnfolderBase]: For 334734/334744 co-relation queries the response was YES. [2024-06-27 22:55:29,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87708 conditions, 13674 events. 8578/13674 cut-off events. For 334734/334744 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 92726 event pairs, 3469 based on Foata normal form. 10/13682 useless extension candidates. Maximal degree in co-relation 87546. Up to 12332 conditions per place. [2024-06-27 22:55:29,492 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 478 selfloop transitions, 91 changer transitions 0/576 dead transitions. [2024-06-27 22:55:29,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 576 transitions, 11091 flow [2024-06-27 22:55:29,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:55:29,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:55:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2024-06-27 22:55:29,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44680851063829785 [2024-06-27 22:55:29,494 INFO L175 Difference]: Start difference. First operand has 390 places, 526 transitions, 9455 flow. Second operand 10 states and 210 transitions. [2024-06-27 22:55:29,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 576 transitions, 11091 flow [2024-06-27 22:55:30,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 576 transitions, 10655 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 22:55:30,883 INFO L231 Difference]: Finished difference. Result has 390 places, 540 transitions, 9483 flow [2024-06-27 22:55:30,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9019, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9483, PETRI_PLACES=390, PETRI_TRANSITIONS=540} [2024-06-27 22:55:30,884 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 339 predicate places. [2024-06-27 22:55:30,884 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 540 transitions, 9483 flow [2024-06-27 22:55:30,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:30,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:30,885 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] [2024-06-27 22:55:30,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:55:30,885 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:30,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:30,885 INFO L85 PathProgramCache]: Analyzing trace with hash 771770148, now seen corresponding path program 2 times [2024-06-27 22:55:30,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:30,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411569576] [2024-06-27 22:55:30,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:30,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:34,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:34,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411569576] [2024-06-27 22:55:34,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411569576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:34,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:34,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:55:34,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597425206] [2024-06-27 22:55:34,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:34,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:55:34,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:34,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:55:34,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:55:34,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:34,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 540 transitions, 9483 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:34,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:34,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:34,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:39,019 INFO L124 PetriNetUnfolderBase]: 8602/13716 cut-off events. [2024-06-27 22:55:39,019 INFO L125 PetriNetUnfolderBase]: For 342183/342191 co-relation queries the response was YES. [2024-06-27 22:55:39,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87774 conditions, 13716 events. 8602/13716 cut-off events. For 342183/342191 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 93281 event pairs, 3476 based on Foata normal form. 11/13726 useless extension candidates. Maximal degree in co-relation 87610. Up to 11906 conditions per place. [2024-06-27 22:55:39,230 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 381 selfloop transitions, 235 changer transitions 0/623 dead transitions. [2024-06-27 22:55:39,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 623 transitions, 11733 flow [2024-06-27 22:55:39,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:55:39,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:55:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 304 transitions. [2024-06-27 22:55:39,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46200607902735563 [2024-06-27 22:55:39,232 INFO L175 Difference]: Start difference. First operand has 390 places, 540 transitions, 9483 flow. Second operand 14 states and 304 transitions. [2024-06-27 22:55:39,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 623 transitions, 11733 flow [2024-06-27 22:55:40,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 623 transitions, 11476 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-27 22:55:40,863 INFO L231 Difference]: Finished difference. Result has 402 places, 565 transitions, 10349 flow [2024-06-27 22:55:40,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9252, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10349, PETRI_PLACES=402, PETRI_TRANSITIONS=565} [2024-06-27 22:55:40,863 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 351 predicate places. [2024-06-27 22:55:40,863 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 565 transitions, 10349 flow [2024-06-27 22:55:40,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:40,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:40,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:40,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:55:40,864 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:40,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:40,864 INFO L85 PathProgramCache]: Analyzing trace with hash -793493592, now seen corresponding path program 3 times [2024-06-27 22:55:40,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:40,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537314077] [2024-06-27 22:55:40,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:40,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:46,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537314077] [2024-06-27 22:55:46,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537314077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:46,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:46,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:55:46,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645082953] [2024-06-27 22:55:46,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:46,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:55:46,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:46,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:55:46,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:55:46,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:46,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 565 transitions, 10349 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:46,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:46,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:46,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:50,856 INFO L124 PetriNetUnfolderBase]: 8596/13703 cut-off events. [2024-06-27 22:55:50,857 INFO L125 PetriNetUnfolderBase]: For 359120/359130 co-relation queries the response was YES. [2024-06-27 22:55:51,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89406 conditions, 13703 events. 8596/13703 cut-off events. For 359120/359130 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 93000 event pairs, 3476 based on Foata normal form. 10/13711 useless extension candidates. Maximal degree in co-relation 89238. Up to 12273 conditions per place. [2024-06-27 22:55:51,093 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 482 selfloop transitions, 121 changer transitions 0/610 dead transitions. [2024-06-27 22:55:51,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 610 transitions, 12072 flow [2024-06-27 22:55:51,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:55:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:55:51,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-06-27 22:55:51,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448742746615087 [2024-06-27 22:55:51,095 INFO L175 Difference]: Start difference. First operand has 402 places, 565 transitions, 10349 flow. Second operand 11 states and 230 transitions. [2024-06-27 22:55:51,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 610 transitions, 12072 flow [2024-06-27 22:55:52,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 610 transitions, 11574 flow, removed 116 selfloop flow, removed 10 redundant places. [2024-06-27 22:55:52,612 INFO L231 Difference]: Finished difference. Result has 403 places, 568 transitions, 10189 flow [2024-06-27 22:55:52,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9882, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10189, PETRI_PLACES=403, PETRI_TRANSITIONS=568} [2024-06-27 22:55:52,613 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 352 predicate places. [2024-06-27 22:55:52,613 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 568 transitions, 10189 flow [2024-06-27 22:55:52,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:52,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:52,613 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] [2024-06-27 22:55:52,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:55:52,614 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:52,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:52,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1283956348, now seen corresponding path program 4 times [2024-06-27 22:55:52,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:52,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121316518] [2024-06-27 22:55:52,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:52,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:58,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:58,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121316518] [2024-06-27 22:55:58,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121316518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:58,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:58,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:55:58,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973823663] [2024-06-27 22:55:58,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:58,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:55:58,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:58,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:55:58,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:55:58,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:58,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 568 transitions, 10189 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:58,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:58,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:58,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:03,133 INFO L124 PetriNetUnfolderBase]: 8642/13791 cut-off events. [2024-06-27 22:56:03,134 INFO L125 PetriNetUnfolderBase]: For 367470/367480 co-relation queries the response was YES. [2024-06-27 22:56:03,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89925 conditions, 13791 events. 8642/13791 cut-off events. For 367470/367480 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 93786 event pairs, 3476 based on Foata normal form. 10/13799 useless extension candidates. Maximal degree in co-relation 89759. Up to 12518 conditions per place. [2024-06-27 22:56:03,306 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 541 selfloop transitions, 65 changer transitions 0/613 dead transitions. [2024-06-27 22:56:03,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 613 transitions, 11871 flow [2024-06-27 22:56:03,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:56:03,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:56:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 234 transitions. [2024-06-27 22:56:03,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148936170212766 [2024-06-27 22:56:03,307 INFO L175 Difference]: Start difference. First operand has 403 places, 568 transitions, 10189 flow. Second operand 12 states and 234 transitions. [2024-06-27 22:56:03,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 613 transitions, 11871 flow [2024-06-27 22:56:04,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 613 transitions, 11422 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-27 22:56:04,662 INFO L231 Difference]: Finished difference. Result has 408 places, 577 transitions, 10093 flow [2024-06-27 22:56:04,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9769, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10093, PETRI_PLACES=408, PETRI_TRANSITIONS=577} [2024-06-27 22:56:04,663 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 357 predicate places. [2024-06-27 22:56:04,663 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 577 transitions, 10093 flow [2024-06-27 22:56:04,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:04,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:04,663 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] [2024-06-27 22:56:04,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:56:04,664 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:56:04,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:04,664 INFO L85 PathProgramCache]: Analyzing trace with hash 737370930, now seen corresponding path program 5 times [2024-06-27 22:56:04,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:04,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044745353] [2024-06-27 22:56:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:04,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:10,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:10,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044745353] [2024-06-27 22:56:10,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044745353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:10,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:10,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:56:10,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301721760] [2024-06-27 22:56:10,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:10,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:56:10,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:10,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:56:10,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:56:10,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:56:10,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 577 transitions, 10093 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:10,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:10,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:56:10,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:14,575 INFO L124 PetriNetUnfolderBase]: 8636/13751 cut-off events. [2024-06-27 22:56:14,576 INFO L125 PetriNetUnfolderBase]: For 367258/367268 co-relation queries the response was YES. [2024-06-27 22:56:14,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88914 conditions, 13751 events. 8636/13751 cut-off events. For 367258/367268 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 93197 event pairs, 3470 based on Foata normal form. 10/13759 useless extension candidates. Maximal degree in co-relation 88748. Up to 12513 conditions per place. [2024-06-27 22:56:14,767 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 542 selfloop transitions, 65 changer transitions 0/614 dead transitions. [2024-06-27 22:56:14,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 614 transitions, 11455 flow [2024-06-27 22:56:14,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:56:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:56:14,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 248 transitions. [2024-06-27 22:56:14,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40589198036006546 [2024-06-27 22:56:14,769 INFO L175 Difference]: Start difference. First operand has 408 places, 577 transitions, 10093 flow. Second operand 13 states and 248 transitions. [2024-06-27 22:56:14,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 614 transitions, 11455 flow [2024-06-27 22:56:16,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 614 transitions, 11385 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 22:56:16,421 INFO L231 Difference]: Finished difference. Result has 414 places, 577 transitions, 10160 flow [2024-06-27 22:56:16,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10023, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10160, PETRI_PLACES=414, PETRI_TRANSITIONS=577} [2024-06-27 22:56:16,422 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 363 predicate places. [2024-06-27 22:56:16,422 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 577 transitions, 10160 flow [2024-06-27 22:56:16,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:16,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:16,423 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] [2024-06-27 22:56:16,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:56:16,423 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:56:16,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:16,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1836555976, now seen corresponding path program 6 times [2024-06-27 22:56:16,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:16,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651389329] [2024-06-27 22:56:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:16,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:21,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:21,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651389329] [2024-06-27 22:56:21,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651389329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:21,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:21,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:56:21,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452806316] [2024-06-27 22:56:21,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:21,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:56:21,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:56:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:56:21,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:56:21,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 577 transitions, 10160 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:21,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:21,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:56:21,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:26,368 INFO L124 PetriNetUnfolderBase]: 8626/13733 cut-off events. [2024-06-27 22:56:26,368 INFO L125 PetriNetUnfolderBase]: For 368653/368663 co-relation queries the response was YES. [2024-06-27 22:56:26,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88928 conditions, 13733 events. 8626/13733 cut-off events. For 368653/368663 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 93007 event pairs, 3470 based on Foata normal form. 10/13741 useless extension candidates. Maximal degree in co-relation 88760. Up to 12425 conditions per place. [2024-06-27 22:56:26,528 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 505 selfloop transitions, 93 changer transitions 0/605 dead transitions. [2024-06-27 22:56:26,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 605 transitions, 11432 flow [2024-06-27 22:56:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:56:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:56:26,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-27 22:56:26,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42340425531914894 [2024-06-27 22:56:26,529 INFO L175 Difference]: Start difference. First operand has 414 places, 577 transitions, 10160 flow. Second operand 10 states and 199 transitions. [2024-06-27 22:56:26,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 605 transitions, 11432 flow [2024-06-27 22:56:27,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 605 transitions, 11262 flow, removed 18 selfloop flow, removed 12 redundant places. [2024-06-27 22:56:27,782 INFO L231 Difference]: Finished difference. Result has 412 places, 577 transitions, 10192 flow [2024-06-27 22:56:27,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9998, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10192, PETRI_PLACES=412, PETRI_TRANSITIONS=577} [2024-06-27 22:56:27,783 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 361 predicate places. [2024-06-27 22:56:27,783 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 577 transitions, 10192 flow [2024-06-27 22:56:27,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:27,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:27,783 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] [2024-06-27 22:56:27,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:56:27,783 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:56:27,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:27,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1108263300, now seen corresponding path program 7 times [2024-06-27 22:56:27,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:27,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369098023] [2024-06-27 22:56:27,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:27,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:33,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:33,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369098023] [2024-06-27 22:56:33,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369098023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:33,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:33,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:56:33,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396274771] [2024-06-27 22:56:33,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:33,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:56:33,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:33,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:56:33,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:56:33,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:56:33,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 577 transitions, 10192 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:33,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:33,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:56:33,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:38,146 INFO L124 PetriNetUnfolderBase]: 8664/13800 cut-off events. [2024-06-27 22:56:38,146 INFO L125 PetriNetUnfolderBase]: For 380572/380582 co-relation queries the response was YES. [2024-06-27 22:56:38,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89665 conditions, 13800 events. 8664/13800 cut-off events. For 380572/380582 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 93546 event pairs, 3468 based on Foata normal form. 10/13808 useless extension candidates. Maximal degree in co-relation 89496. Up to 12535 conditions per place. [2024-06-27 22:56:38,319 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 542 selfloop transitions, 69 changer transitions 0/618 dead transitions. [2024-06-27 22:56:38,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 618 transitions, 11951 flow [2024-06-27 22:56:38,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:56:38,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:56:38,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 248 transitions. [2024-06-27 22:56:38,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40589198036006546 [2024-06-27 22:56:38,321 INFO L175 Difference]: Start difference. First operand has 412 places, 577 transitions, 10192 flow. Second operand 13 states and 248 transitions. [2024-06-27 22:56:38,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 618 transitions, 11951 flow [2024-06-27 22:56:39,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 618 transitions, 11769 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 22:56:39,710 INFO L231 Difference]: Finished difference. Result has 418 places, 583 transitions, 10280 flow [2024-06-27 22:56:39,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10010, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10280, PETRI_PLACES=418, PETRI_TRANSITIONS=583} [2024-06-27 22:56:39,713 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 367 predicate places. [2024-06-27 22:56:39,713 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 583 transitions, 10280 flow [2024-06-27 22:56:39,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:39,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:39,714 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] [2024-06-27 22:56:39,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:56:39,714 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:56:39,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:39,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1609796404, now seen corresponding path program 13 times [2024-06-27 22:56:39,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:39,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266574839] [2024-06-27 22:56:39,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:39,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:44,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:44,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266574839] [2024-06-27 22:56:44,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266574839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:44,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:44,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:56:44,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621637974] [2024-06-27 22:56:44,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:44,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:56:44,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:44,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:56:44,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:56:44,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:56:44,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 583 transitions, 10280 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:44,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:44,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:56:44,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:48,539 INFO L124 PetriNetUnfolderBase]: 8672/13822 cut-off events. [2024-06-27 22:56:48,540 INFO L125 PetriNetUnfolderBase]: For 382719/382725 co-relation queries the response was YES. [2024-06-27 22:56:48,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89873 conditions, 13822 events. 8672/13822 cut-off events. For 382719/382725 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 93675 event pairs, 3101 based on Foata normal form. 2/13821 useless extension candidates. Maximal degree in co-relation 89702. Up to 12429 conditions per place. [2024-06-27 22:56:48,759 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 509 selfloop transitions, 96 changer transitions 0/612 dead transitions. [2024-06-27 22:56:48,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 612 transitions, 11637 flow [2024-06-27 22:56:48,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:56:48,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:56:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-27 22:56:48,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42127659574468085 [2024-06-27 22:56:48,761 INFO L175 Difference]: Start difference. First operand has 418 places, 583 transitions, 10280 flow. Second operand 10 states and 198 transitions. [2024-06-27 22:56:48,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 612 transitions, 11637 flow [2024-06-27 22:56:50,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 612 transitions, 11391 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 22:56:50,471 INFO L231 Difference]: Finished difference. Result has 419 places, 589 transitions, 10365 flow [2024-06-27 22:56:50,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10034, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10365, PETRI_PLACES=419, PETRI_TRANSITIONS=589} [2024-06-27 22:56:50,471 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 368 predicate places. [2024-06-27 22:56:50,471 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 589 transitions, 10365 flow [2024-06-27 22:56:50,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:50,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:50,472 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] [2024-06-27 22:56:50,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:56:50,472 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:56:50,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:50,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1108268880, now seen corresponding path program 8 times [2024-06-27 22:56:50,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:50,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833723592] [2024-06-27 22:56:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:50,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:55,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:55,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833723592] [2024-06-27 22:56:55,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833723592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:55,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:55,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:56:55,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212305182] [2024-06-27 22:56:55,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:55,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:56:55,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:55,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:56:55,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:56:55,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:56:55,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 589 transitions, 10365 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:55,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:55,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:56:55,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:57:00,338 INFO L124 PetriNetUnfolderBase]: 8662/13786 cut-off events. [2024-06-27 22:57:00,339 INFO L125 PetriNetUnfolderBase]: For 388132/388142 co-relation queries the response was YES. [2024-06-27 22:57:00,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89559 conditions, 13786 events. 8662/13786 cut-off events. For 388132/388142 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 93381 event pairs, 3462 based on Foata normal form. 10/13794 useless extension candidates. Maximal degree in co-relation 89388. Up to 12535 conditions per place. [2024-06-27 22:57:00,510 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 543 selfloop transitions, 70 changer transitions 0/620 dead transitions. [2024-06-27 22:57:00,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 620 transitions, 11856 flow [2024-06-27 22:57:00,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:57:00,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:57:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 229 transitions. [2024-06-27 22:57:00,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40602836879432624 [2024-06-27 22:57:00,511 INFO L175 Difference]: Start difference. First operand has 419 places, 589 transitions, 10365 flow. Second operand 12 states and 229 transitions. [2024-06-27 22:57:00,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 620 transitions, 11856 flow [2024-06-27 22:57:01,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 620 transitions, 11702 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 22:57:01,761 INFO L231 Difference]: Finished difference. Result has 425 places, 589 transitions, 10358 flow [2024-06-27 22:57:01,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10211, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10358, PETRI_PLACES=425, PETRI_TRANSITIONS=589} [2024-06-27 22:57:01,761 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 374 predicate places. [2024-06-27 22:57:01,762 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 589 transitions, 10358 flow [2024-06-27 22:57:01,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:01,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:57:01,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:57:01,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:57:01,762 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:57:01,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:57:01,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1121155890, now seen corresponding path program 9 times [2024-06-27 22:57:01,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:57:01,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694787055] [2024-06-27 22:57:01,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:57:01,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:57:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:57:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:57:05,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:57:05,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694787055] [2024-06-27 22:57:05,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694787055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:57:05,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:57:05,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:57:05,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282540211] [2024-06-27 22:57:05,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:57:05,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:57:05,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:57:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:57:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:57:05,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:57:05,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 589 transitions, 10358 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:05,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:57:05,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:57:05,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:57:10,551 INFO L124 PetriNetUnfolderBase]: 8700/13853 cut-off events. [2024-06-27 22:57:10,551 INFO L125 PetriNetUnfolderBase]: For 399620/399628 co-relation queries the response was YES. [2024-06-27 22:57:10,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90447 conditions, 13853 events. 8700/13853 cut-off events. For 399620/399628 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 94028 event pairs, 3474 based on Foata normal form. 10/13862 useless extension candidates. Maximal degree in co-relation 90274. Up to 12303 conditions per place. [2024-06-27 22:57:10,740 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 471 selfloop transitions, 172 changer transitions 0/650 dead transitions. [2024-06-27 22:57:10,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 650 transitions, 12248 flow [2024-06-27 22:57:10,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 22:57:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 22:57:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 320 transitions. [2024-06-27 22:57:10,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2024-06-27 22:57:10,741 INFO L175 Difference]: Start difference. First operand has 425 places, 589 transitions, 10358 flow. Second operand 16 states and 320 transitions. [2024-06-27 22:57:10,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 650 transitions, 12248 flow [2024-06-27 22:57:12,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 650 transitions, 12120 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 22:57:12,426 INFO L231 Difference]: Finished difference. Result has 431 places, 595 transitions, 10697 flow [2024-06-27 22:57:12,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10230, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10697, PETRI_PLACES=431, PETRI_TRANSITIONS=595} [2024-06-27 22:57:12,427 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 380 predicate places. [2024-06-27 22:57:12,427 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 595 transitions, 10697 flow [2024-06-27 22:57:12,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:12,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:57:12,427 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] [2024-06-27 22:57:12,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:57:12,427 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:57:12,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:57:12,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1615337530, now seen corresponding path program 1 times [2024-06-27 22:57:12,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:57:12,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945908136] [2024-06-27 22:57:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:57:12,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:57:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:57:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:57:16,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:57:16,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945908136] [2024-06-27 22:57:16,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945908136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:57:16,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:57:16,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:57:16,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676517338] [2024-06-27 22:57:16,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:57:16,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:57:16,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:57:16,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:57:16,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:57:16,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:57:16,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 595 transitions, 10697 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:16,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:57:16,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:57:16,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:57:20,475 INFO L124 PetriNetUnfolderBase]: 8716/13867 cut-off events. [2024-06-27 22:57:20,475 INFO L125 PetriNetUnfolderBase]: For 407749/407749 co-relation queries the response was YES. [2024-06-27 22:57:20,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91168 conditions, 13867 events. 8716/13867 cut-off events. For 407749/407749 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 93951 event pairs, 3107 based on Foata normal form. 2/13868 useless extension candidates. Maximal degree in co-relation 90994. Up to 12130 conditions per place. [2024-06-27 22:57:20,637 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 472 selfloop transitions, 170 changer transitions 0/649 dead transitions. [2024-06-27 22:57:20,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 649 transitions, 12439 flow [2024-06-27 22:57:20,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:57:20,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:57:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 271 transitions. [2024-06-27 22:57:20,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44353518821603927 [2024-06-27 22:57:20,639 INFO L175 Difference]: Start difference. First operand has 431 places, 595 transitions, 10697 flow. Second operand 13 states and 271 transitions. [2024-06-27 22:57:20,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 649 transitions, 12439 flow [2024-06-27 22:57:22,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 649 transitions, 12211 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 22:57:22,042 INFO L231 Difference]: Finished difference. Result has 434 places, 601 transitions, 10938 flow [2024-06-27 22:57:22,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10469, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10938, PETRI_PLACES=434, PETRI_TRANSITIONS=601} [2024-06-27 22:57:22,043 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 383 predicate places. [2024-06-27 22:57:22,043 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 601 transitions, 10938 flow [2024-06-27 22:57:22,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:22,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:57:22,043 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] [2024-06-27 22:57:22,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:57:22,043 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:57:22,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:57:22,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1121393040, now seen corresponding path program 10 times [2024-06-27 22:57:22,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:57:22,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631840893] [2024-06-27 22:57:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:57:22,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:57:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:57:25,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:57:25,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:57:25,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631840893] [2024-06-27 22:57:25,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631840893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:57:25,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:57:25,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:57:25,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526560441] [2024-06-27 22:57:25,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:57:25,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:57:25,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:57:25,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:57:25,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:57:25,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:57:25,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 601 transitions, 10938 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:25,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:57:25,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:57:25,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:57:29,638 INFO L124 PetriNetUnfolderBase]: 8748/13928 cut-off events. [2024-06-27 22:57:29,638 INFO L125 PetriNetUnfolderBase]: For 417294/417302 co-relation queries the response was YES. [2024-06-27 22:57:29,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92157 conditions, 13928 events. 8748/13928 cut-off events. For 417294/417302 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 94672 event pairs, 3482 based on Foata normal form. 10/13937 useless extension candidates. Maximal degree in co-relation 91981. Up to 12355 conditions per place. [2024-06-27 22:57:29,817 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 475 selfloop transitions, 176 changer transitions 0/658 dead transitions. [2024-06-27 22:57:29,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 658 transitions, 12673 flow [2024-06-27 22:57:29,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 22:57:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 22:57:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 303 transitions. [2024-06-27 22:57:29,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297872340425532 [2024-06-27 22:57:29,819 INFO L175 Difference]: Start difference. First operand has 434 places, 601 transitions, 10938 flow. Second operand 15 states and 303 transitions. [2024-06-27 22:57:29,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 658 transitions, 12673 flow [2024-06-27 22:57:31,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 658 transitions, 12528 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 22:57:31,617 INFO L231 Difference]: Finished difference. Result has 441 places, 607 transitions, 11242 flow [2024-06-27 22:57:31,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10793, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=11242, PETRI_PLACES=441, PETRI_TRANSITIONS=607} [2024-06-27 22:57:31,618 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 390 predicate places. [2024-06-27 22:57:31,618 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 607 transitions, 11242 flow [2024-06-27 22:57:31,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:31,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:57:31,618 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] [2024-06-27 22:57:31,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:57:31,618 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:57:31,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:57:31,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1116030660, now seen corresponding path program 11 times [2024-06-27 22:57:31,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:57:31,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047424377] [2024-06-27 22:57:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:57:31,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:57:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:57:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:57:35,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:57:35,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047424377] [2024-06-27 22:57:35,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047424377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:57:35,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:57:35,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:57:35,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954264450] [2024-06-27 22:57:35,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:57:35,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:57:35,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:57:35,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:57:35,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:57:35,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:57:35,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 607 transitions, 11242 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:35,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:57:35,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:57:35,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:57:39,283 INFO L124 PetriNetUnfolderBase]: 8753/13936 cut-off events. [2024-06-27 22:57:39,283 INFO L125 PetriNetUnfolderBase]: For 421360/421368 co-relation queries the response was YES. [2024-06-27 22:57:39,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92725 conditions, 13936 events. 8753/13936 cut-off events. For 421360/421368 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 94741 event pairs, 3480 based on Foata normal form. 10/13945 useless extension candidates. Maximal degree in co-relation 92547. Up to 12362 conditions per place. [2024-06-27 22:57:39,472 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 473 selfloop transitions, 184 changer transitions 0/664 dead transitions. [2024-06-27 22:57:39,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 664 transitions, 13247 flow [2024-06-27 22:57:39,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:57:39,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:57:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 257 transitions. [2024-06-27 22:57:39,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45567375886524825 [2024-06-27 22:57:39,473 INFO L175 Difference]: Start difference. First operand has 441 places, 607 transitions, 11242 flow. Second operand 12 states and 257 transitions. [2024-06-27 22:57:39,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 664 transitions, 13247 flow [2024-06-27 22:57:41,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 664 transitions, 12929 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 22:57:41,138 INFO L231 Difference]: Finished difference. Result has 443 places, 619 transitions, 11555 flow [2024-06-27 22:57:41,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10935, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11555, PETRI_PLACES=443, PETRI_TRANSITIONS=619} [2024-06-27 22:57:41,139 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 392 predicate places. [2024-06-27 22:57:41,139 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 619 transitions, 11555 flow [2024-06-27 22:57:41,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:41,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:57:41,139 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] [2024-06-27 22:57:41,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:57:41,139 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:57:41,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:57:41,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1609796776, now seen corresponding path program 12 times [2024-06-27 22:57:41,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:57:41,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453184741] [2024-06-27 22:57:41,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:57:41,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:57:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:57:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:57:45,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:57:45,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453184741] [2024-06-27 22:57:45,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453184741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:57:45,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:57:45,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:57:45,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817020673] [2024-06-27 22:57:45,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:57:45,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:57:45,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:57:45,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:57:45,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:57:45,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:57:45,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 619 transitions, 11555 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:45,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:57:45,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:57:45,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:57:49,560 INFO L124 PetriNetUnfolderBase]: 8747/13945 cut-off events. [2024-06-27 22:57:49,560 INFO L125 PetriNetUnfolderBase]: For 427662/427672 co-relation queries the response was YES. [2024-06-27 22:57:49,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93069 conditions, 13945 events. 8747/13945 cut-off events. For 427662/427672 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 94849 event pairs, 3467 based on Foata normal form. 10/13953 useless extension candidates. Maximal degree in co-relation 92889. Up to 12688 conditions per place. [2024-06-27 22:57:49,796 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 576 selfloop transitions, 60 changer transitions 0/643 dead transitions. [2024-06-27 22:57:49,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 643 transitions, 12910 flow [2024-06-27 22:57:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:57:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:57:49,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 22:57:49,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4127659574468085 [2024-06-27 22:57:49,798 INFO L175 Difference]: Start difference. First operand has 443 places, 619 transitions, 11555 flow. Second operand 10 states and 194 transitions. [2024-06-27 22:57:49,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 643 transitions, 12910 flow [2024-06-27 22:57:51,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 643 transitions, 12554 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 22:57:51,770 INFO L231 Difference]: Finished difference. Result has 445 places, 619 transitions, 11349 flow [2024-06-27 22:57:51,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11221, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11349, PETRI_PLACES=445, PETRI_TRANSITIONS=619} [2024-06-27 22:57:51,770 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 394 predicate places. [2024-06-27 22:57:51,770 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 619 transitions, 11349 flow [2024-06-27 22:57:51,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:51,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:57:51,771 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] [2024-06-27 22:57:51,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:57:51,771 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:57:51,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:57:51,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1380459046, now seen corresponding path program 13 times [2024-06-27 22:57:51,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:57:51,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306219454] [2024-06-27 22:57:51,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:57:51,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:57:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:57:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:57:56,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:57:56,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306219454] [2024-06-27 22:57:56,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306219454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:57:56,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:57:56,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:57:56,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724013241] [2024-06-27 22:57:56,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:57:56,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:57:56,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:57:56,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:57:56,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:57:56,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:57:56,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 619 transitions, 11349 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:56,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:57:56,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:57:56,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:58:01,043 INFO L124 PetriNetUnfolderBase]: 8763/13969 cut-off events. [2024-06-27 22:58:01,044 INFO L125 PetriNetUnfolderBase]: For 435881/435907 co-relation queries the response was YES. [2024-06-27 22:58:01,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92798 conditions, 13969 events. 8763/13969 cut-off events. For 435881/435907 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 95076 event pairs, 3483 based on Foata normal form. 21/13988 useless extension candidates. Maximal degree in co-relation 92617. Up to 12656 conditions per place. [2024-06-27 22:58:01,211 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 570 selfloop transitions, 78 changer transitions 0/655 dead transitions. [2024-06-27 22:58:01,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 655 transitions, 13160 flow [2024-06-27 22:58:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:58:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:58:01,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 261 transitions. [2024-06-27 22:58:01,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3966565349544073 [2024-06-27 22:58:01,212 INFO L175 Difference]: Start difference. First operand has 445 places, 619 transitions, 11349 flow. Second operand 14 states and 261 transitions. [2024-06-27 22:58:01,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 655 transitions, 13160 flow [2024-06-27 22:58:03,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 655 transitions, 13014 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:58:03,279 INFO L231 Difference]: Finished difference. Result has 449 places, 622 transitions, 11419 flow [2024-06-27 22:58:03,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11203, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11419, PETRI_PLACES=449, PETRI_TRANSITIONS=622} [2024-06-27 22:58:03,279 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 398 predicate places. [2024-06-27 22:58:03,280 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 622 transitions, 11419 flow [2024-06-27 22:58:03,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:58:03,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:58:03,280 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] [2024-06-27 22:58:03,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:58:03,280 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:58:03,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:58:03,281 INFO L85 PathProgramCache]: Analyzing trace with hash -473663804, now seen corresponding path program 14 times [2024-06-27 22:58:03,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:58:03,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291304472] [2024-06-27 22:58:03,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:58:03,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:58:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:58:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:58:07,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:58:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291304472] [2024-06-27 22:58:07,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291304472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:58:07,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:58:07,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:58:07,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236726376] [2024-06-27 22:58:07,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:58:07,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:58:07,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:58:07,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:58:07,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:58:07,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:58:07,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 622 transitions, 11419 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:58:07,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:58:07,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:58:07,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:58:11,065 INFO L124 PetriNetUnfolderBase]: 8787/13996 cut-off events. [2024-06-27 22:58:11,065 INFO L125 PetriNetUnfolderBase]: For 443344/443366 co-relation queries the response was YES. [2024-06-27 22:58:11,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93312 conditions, 13996 events. 8787/13996 cut-off events. For 443344/443366 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 95292 event pairs, 3471 based on Foata normal form. 19/14014 useless extension candidates. Maximal degree in co-relation 93130. Up to 12228 conditions per place. [2024-06-27 22:58:11,258 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 443 selfloop transitions, 223 changer transitions 0/673 dead transitions. [2024-06-27 22:58:11,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 673 transitions, 13599 flow [2024-06-27 22:58:11,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:58:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:58:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 265 transitions. [2024-06-27 22:58:11,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337152209492635 [2024-06-27 22:58:11,260 INFO L175 Difference]: Start difference. First operand has 449 places, 622 transitions, 11419 flow. Second operand 13 states and 265 transitions. [2024-06-27 22:58:11,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 673 transitions, 13599 flow [2024-06-27 22:58:13,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 673 transitions, 13327 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-27 22:58:13,200 INFO L231 Difference]: Finished difference. Result has 451 places, 632 transitions, 11826 flow [2024-06-27 22:58:13,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11171, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11826, PETRI_PLACES=451, PETRI_TRANSITIONS=632} [2024-06-27 22:58:13,200 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 400 predicate places. [2024-06-27 22:58:13,201 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 632 transitions, 11826 flow [2024-06-27 22:58:13,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:58:13,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:58:13,201 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] [2024-06-27 22:58:13,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:58:13,201 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:58:13,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:58:13,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1058970052, now seen corresponding path program 2 times [2024-06-27 22:58:13,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:58:13,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493768161] [2024-06-27 22:58:13,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:58:13,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:58:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:58:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:58:17,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:58:17,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493768161] [2024-06-27 22:58:17,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493768161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:58:17,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:58:17,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:58:17,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276329424] [2024-06-27 22:58:17,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:58:17,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:58:17,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:58:17,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:58:17,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:58:17,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:58:17,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 632 transitions, 11826 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:58:17,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:58:17,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:58:17,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:58:21,930 INFO L124 PetriNetUnfolderBase]: 8815/14035 cut-off events. [2024-06-27 22:58:21,930 INFO L125 PetriNetUnfolderBase]: For 452750/452750 co-relation queries the response was YES. [2024-06-27 22:58:22,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94605 conditions, 14035 events. 8815/14035 cut-off events. For 452750/452750 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 95370 event pairs, 3091 based on Foata normal form. 2/14036 useless extension candidates. Maximal degree in co-relation 94423. Up to 12747 conditions per place. [2024-06-27 22:58:22,097 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 605 selfloop transitions, 70 changer transitions 0/682 dead transitions. [2024-06-27 22:58:22,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 682 transitions, 13554 flow [2024-06-27 22:58:22,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:58:22,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:58:22,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 236 transitions. [2024-06-27 22:58:22,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41843971631205673 [2024-06-27 22:58:22,098 INFO L175 Difference]: Start difference. First operand has 451 places, 632 transitions, 11826 flow. Second operand 12 states and 236 transitions. [2024-06-27 22:58:22,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 682 transitions, 13554 flow [2024-06-27 22:58:23,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 682 transitions, 12949 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-27 22:58:23,981 INFO L231 Difference]: Finished difference. Result has 454 places, 648 transitions, 11670 flow [2024-06-27 22:58:23,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11253, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11670, PETRI_PLACES=454, PETRI_TRANSITIONS=648} [2024-06-27 22:58:23,981 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 403 predicate places. [2024-06-27 22:58:23,982 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 648 transitions, 11670 flow [2024-06-27 22:58:23,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:58:23,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:58:23,982 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] [2024-06-27 22:58:23,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:58:23,982 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:58:23,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:58:23,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1546633636, now seen corresponding path program 15 times [2024-06-27 22:58:23,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:58:23,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266775303] [2024-06-27 22:58:23,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:58:23,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:58:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:58:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:58:28,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:58:28,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266775303] [2024-06-27 22:58:28,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266775303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:58:28,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:58:28,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:58:28,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166223351] [2024-06-27 22:58:28,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:58:28,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:58:28,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:58:28,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:58:28,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:58:28,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:58:28,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 648 transitions, 11670 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:58:28,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:58:28,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:58:28,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:58:33,110 INFO L124 PetriNetUnfolderBase]: 8805/14024 cut-off events. [2024-06-27 22:58:33,110 INFO L125 PetriNetUnfolderBase]: For 456767/456793 co-relation queries the response was YES. [2024-06-27 22:58:33,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93864 conditions, 14024 events. 8805/14024 cut-off events. For 456767/456793 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 95334 event pairs, 3483 based on Foata normal form. 21/14043 useless extension candidates. Maximal degree in co-relation 93681. Up to 12713 conditions per place. [2024-06-27 22:58:33,309 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 585 selfloop transitions, 85 changer transitions 0/677 dead transitions. [2024-06-27 22:58:33,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 677 transitions, 13298 flow [2024-06-27 22:58:33,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:58:33,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:58:33,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 242 transitions. [2024-06-27 22:58:33,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3960720130932897 [2024-06-27 22:58:33,311 INFO L175 Difference]: Start difference. First operand has 454 places, 648 transitions, 11670 flow. Second operand 13 states and 242 transitions. [2024-06-27 22:58:33,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 677 transitions, 13298 flow [2024-06-27 22:58:35,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 677 transitions, 13165 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 22:58:35,443 INFO L231 Difference]: Finished difference. Result has 460 places, 648 transitions, 11714 flow [2024-06-27 22:58:35,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11537, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11714, PETRI_PLACES=460, PETRI_TRANSITIONS=648} [2024-06-27 22:58:35,444 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 409 predicate places. [2024-06-27 22:58:35,444 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 648 transitions, 11714 flow [2024-06-27 22:58:35,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:58:35,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:58:35,444 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] [2024-06-27 22:58:35,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:58:35,445 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:58:35,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:58:35,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1533746626, now seen corresponding path program 16 times [2024-06-27 22:58:35,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:58:35,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811786118] [2024-06-27 22:58:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:58:35,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:58:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:58:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:58:39,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:58:39,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811786118] [2024-06-27 22:58:39,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811786118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:58:39,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:58:39,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:58:39,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410494211] [2024-06-27 22:58:39,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:58:39,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:58:39,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:58:39,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:58:39,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:58:39,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:58:39,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 648 transitions, 11714 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:58:39,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:58:39,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:58:39,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:58:43,900 INFO L124 PetriNetUnfolderBase]: 8859/14097 cut-off events. [2024-06-27 22:58:43,900 INFO L125 PetriNetUnfolderBase]: For 470649/470671 co-relation queries the response was YES. [2024-06-27 22:58:44,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94812 conditions, 14097 events. 8859/14097 cut-off events. For 470649/470671 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 95836 event pairs, 3476 based on Foata normal form. 19/14115 useless extension candidates. Maximal degree in co-relation 94628. Up to 12299 conditions per place. [2024-06-27 22:58:44,421 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 455 selfloop transitions, 248 changer transitions 0/710 dead transitions. [2024-06-27 22:58:44,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 710 transitions, 14216 flow [2024-06-27 22:58:44,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 22:58:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 22:58:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 324 transitions. [2024-06-27 22:58:44,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308510638297872 [2024-06-27 22:58:44,422 INFO L175 Difference]: Start difference. First operand has 460 places, 648 transitions, 11714 flow. Second operand 16 states and 324 transitions. [2024-06-27 22:58:44,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 710 transitions, 14216 flow [2024-06-27 22:58:46,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 710 transitions, 14058 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 22:58:46,386 INFO L231 Difference]: Finished difference. Result has 465 places, 657 transitions, 12217 flow [2024-06-27 22:58:46,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11556, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=12217, PETRI_PLACES=465, PETRI_TRANSITIONS=657} [2024-06-27 22:58:46,387 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 414 predicate places. [2024-06-27 22:58:46,387 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 657 transitions, 12217 flow [2024-06-27 22:58:46,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:58:46,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:58:46,387 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] [2024-06-27 22:58:46,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:58:46,388 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:58:46,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:58:46,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1236221542, now seen corresponding path program 3 times [2024-06-27 22:58:46,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:58:46,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593566646] [2024-06-27 22:58:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:58:46,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:58:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:58:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:58:50,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:58:50,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593566646] [2024-06-27 22:58:50,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593566646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:58:50,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:58:50,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:58:50,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334007081] [2024-06-27 22:58:50,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:58:50,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:58:50,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:58:50,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:58:50,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:58:50,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:58:50,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 657 transitions, 12217 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:58:50,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:58:50,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:58:50,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:58:54,813 INFO L124 PetriNetUnfolderBase]: 8956/14252 cut-off events. [2024-06-27 22:58:54,813 INFO L125 PetriNetUnfolderBase]: For 496308/496312 co-relation queries the response was YES. [2024-06-27 22:58:54,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97119 conditions, 14252 events. 8956/14252 cut-off events. For 496308/496312 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 97028 event pairs, 3106 based on Foata normal form. 7/14258 useless extension candidates. Maximal degree in co-relation 96934. Up to 12402 conditions per place. [2024-06-27 22:58:55,015 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 505 selfloop transitions, 228 changer transitions 0/740 dead transitions. [2024-06-27 22:58:55,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 740 transitions, 15063 flow [2024-06-27 22:58:55,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:58:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:58:55,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 284 transitions. [2024-06-27 22:58:55,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4316109422492401 [2024-06-27 22:58:55,017 INFO L175 Difference]: Start difference. First operand has 465 places, 657 transitions, 12217 flow. Second operand 14 states and 284 transitions. [2024-06-27 22:58:55,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 740 transitions, 15063 flow [2024-06-27 22:58:57,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 740 transitions, 14615 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-27 22:58:57,138 INFO L231 Difference]: Finished difference. Result has 470 places, 698 transitions, 13022 flow [2024-06-27 22:58:57,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11769, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13022, PETRI_PLACES=470, PETRI_TRANSITIONS=698} [2024-06-27 22:58:57,139 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 419 predicate places. [2024-06-27 22:58:57,139 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 698 transitions, 13022 flow [2024-06-27 22:58:57,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:58:57,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:58:57,140 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] [2024-06-27 22:58:57,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 22:58:57,140 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:58:57,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:58:57,140 INFO L85 PathProgramCache]: Analyzing trace with hash -468301424, now seen corresponding path program 17 times [2024-06-27 22:58:57,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:58:57,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675095947] [2024-06-27 22:58:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:58:57,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:58:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:59:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:59:00,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:59:00,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675095947] [2024-06-27 22:59:00,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675095947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:59:00,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:59:00,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:59:00,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504481090] [2024-06-27 22:59:00,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:59:00,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:59:00,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:59:00,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:59:00,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:59:00,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:59:00,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 698 transitions, 13022 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:59:00,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:59:00,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:59:00,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:59:05,472 INFO L124 PetriNetUnfolderBase]: 9017/14330 cut-off events. [2024-06-27 22:59:05,472 INFO L125 PetriNetUnfolderBase]: For 511798/511806 co-relation queries the response was YES. [2024-06-27 22:59:05,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98105 conditions, 14330 events. 9017/14330 cut-off events. For 511798/511806 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 97457 event pairs, 3462 based on Foata normal form. 11/14340 useless extension candidates. Maximal degree in co-relation 97918. Up to 12444 conditions per place. [2024-06-27 22:59:05,651 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 472 selfloop transitions, 311 changer transitions 0/790 dead transitions. [2024-06-27 22:59:05,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 790 transitions, 15754 flow [2024-06-27 22:59:05,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:59:05,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:59:05,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 284 transitions. [2024-06-27 22:59:05,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46481178396072015 [2024-06-27 22:59:05,652 INFO L175 Difference]: Start difference. First operand has 470 places, 698 transitions, 13022 flow. Second operand 13 states and 284 transitions. [2024-06-27 22:59:05,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 790 transitions, 15754 flow [2024-06-27 22:59:08,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 790 transitions, 15522 flow, removed 83 selfloop flow, removed 7 redundant places. [2024-06-27 22:59:08,059 INFO L231 Difference]: Finished difference. Result has 478 places, 740 transitions, 14184 flow [2024-06-27 22:59:08,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12790, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14184, PETRI_PLACES=478, PETRI_TRANSITIONS=740} [2024-06-27 22:59:08,060 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 427 predicate places. [2024-06-27 22:59:08,060 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 740 transitions, 14184 flow [2024-06-27 22:59:08,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:59:08,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:59:08,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:59:08,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 22:59:08,060 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:59:08,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:59:08,061 INFO L85 PathProgramCache]: Analyzing trace with hash -131410156, now seen corresponding path program 18 times [2024-06-27 22:59:08,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:59:08,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923302952] [2024-06-27 22:59:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:59:08,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:59:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:59:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:59:11,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:59:11,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923302952] [2024-06-27 22:59:11,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923302952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:59:11,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:59:11,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:59:11,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295206140] [2024-06-27 22:59:11,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:59:11,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:59:11,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:59:11,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:59:11,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:59:11,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:59:11,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 740 transitions, 14184 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:59:11,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:59:11,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:59:11,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:59:16,094 INFO L124 PetriNetUnfolderBase]: 9060/14400 cut-off events. [2024-06-27 22:59:16,094 INFO L125 PetriNetUnfolderBase]: For 537661/537683 co-relation queries the response was YES. [2024-06-27 22:59:16,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99938 conditions, 14400 events. 9060/14400 cut-off events. For 537661/537683 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 98159 event pairs, 3461 based on Foata normal form. 20/14419 useless extension candidates. Maximal degree in co-relation 99747. Up to 12538 conditions per place. [2024-06-27 22:59:16,311 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 474 selfloop transitions, 318 changer transitions 0/799 dead transitions. [2024-06-27 22:59:16,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 799 transitions, 16736 flow [2024-06-27 22:59:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 22:59:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 22:59:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 301 transitions. [2024-06-27 22:59:16,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269503546099291 [2024-06-27 22:59:16,312 INFO L175 Difference]: Start difference. First operand has 478 places, 740 transitions, 14184 flow. Second operand 15 states and 301 transitions. [2024-06-27 22:59:16,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 799 transitions, 16736 flow [2024-06-27 22:59:19,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 799 transitions, 16542 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-06-27 22:59:19,280 INFO L231 Difference]: Finished difference. Result has 492 places, 755 transitions, 14999 flow [2024-06-27 22:59:19,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=14010, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14999, PETRI_PLACES=492, PETRI_TRANSITIONS=755} [2024-06-27 22:59:19,281 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 441 predicate places. [2024-06-27 22:59:19,281 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 755 transitions, 14999 flow [2024-06-27 22:59:19,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:59:19,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:59:19,281 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] [2024-06-27 22:59:19,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 22:59:19,281 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:59:19,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:59:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash -474079514, now seen corresponding path program 19 times [2024-06-27 22:59:19,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:59:19,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074619226] [2024-06-27 22:59:19,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:59:19,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:59:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:59:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:59:24,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:59:24,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074619226] [2024-06-27 22:59:24,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074619226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:59:24,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:59:24,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:59:24,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928661713] [2024-06-27 22:59:24,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:59:24,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:59:24,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:59:24,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:59:24,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:59:24,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:59:24,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 755 transitions, 14999 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:59:24,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:59:24,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:59:24,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:59:28,380 INFO L124 PetriNetUnfolderBase]: 9054/14393 cut-off events. [2024-06-27 22:59:28,381 INFO L125 PetriNetUnfolderBase]: For 527842/527868 co-relation queries the response was YES. [2024-06-27 22:59:28,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99481 conditions, 14393 events. 9054/14393 cut-off events. For 527842/527868 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 97963 event pairs, 3469 based on Foata normal form. 21/14412 useless extension candidates. Maximal degree in co-relation 99285. Up to 13096 conditions per place. [2024-06-27 22:59:28,932 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 701 selfloop transitions, 69 changer transitions 0/777 dead transitions. [2024-06-27 22:59:28,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 777 transitions, 16620 flow [2024-06-27 22:59:28,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:59:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:59:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-27 22:59:28,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40038684719535783 [2024-06-27 22:59:28,933 INFO L175 Difference]: Start difference. First operand has 492 places, 755 transitions, 14999 flow. Second operand 11 states and 207 transitions. [2024-06-27 22:59:28,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 777 transitions, 16620 flow [2024-06-27 22:59:31,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 777 transitions, 15987 flow, removed 67 selfloop flow, removed 11 redundant places. [2024-06-27 22:59:31,803 INFO L231 Difference]: Finished difference. Result has 492 places, 755 transitions, 14523 flow [2024-06-27 22:59:31,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=14377, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14523, PETRI_PLACES=492, PETRI_TRANSITIONS=755} [2024-06-27 22:59:31,804 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 441 predicate places. [2024-06-27 22:59:31,804 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 755 transitions, 14523 flow [2024-06-27 22:59:31,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:59:31,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:59:31,805 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] [2024-06-27 22:59:31,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 22:59:31,805 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:59:31,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:59:31,805 INFO L85 PathProgramCache]: Analyzing trace with hash -474079886, now seen corresponding path program 14 times [2024-06-27 22:59:31,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:59:31,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393083208] [2024-06-27 22:59:31,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:59:31,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:59:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:59:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:59:36,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:59:36,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393083208] [2024-06-27 22:59:36,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393083208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:59:36,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:59:36,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:59:36,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59165232] [2024-06-27 22:59:36,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:59:36,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:59:36,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:59:36,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:59:36,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:59:36,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:59:36,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 755 transitions, 14523 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:59:36,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:59:36,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:59:36,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:59:41,003 INFO L124 PetriNetUnfolderBase]: 9051/14373 cut-off events. [2024-06-27 22:59:41,003 INFO L125 PetriNetUnfolderBase]: For 523537/523559 co-relation queries the response was YES. [2024-06-27 22:59:41,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98405 conditions, 14373 events. 9051/14373 cut-off events. For 523537/523559 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 97498 event pairs, 3114 based on Foata normal form. 13/14383 useless extension candidates. Maximal degree in co-relation 98208. Up to 12915 conditions per place. [2024-06-27 22:59:41,193 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 658 selfloop transitions, 112 changer transitions 0/777 dead transitions. [2024-06-27 22:59:41,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 777 transitions, 16141 flow [2024-06-27 22:59:41,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:59:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:59:41,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 22:59:41,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005802707930367 [2024-06-27 22:59:41,195 INFO L175 Difference]: Start difference. First operand has 492 places, 755 transitions, 14523 flow. Second operand 11 states and 212 transitions. [2024-06-27 22:59:41,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 777 transitions, 16141 flow [2024-06-27 22:59:44,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 777 transitions, 15923 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-06-27 22:59:44,116 INFO L231 Difference]: Finished difference. Result has 491 places, 756 transitions, 14553 flow [2024-06-27 22:59:44,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=14313, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14553, PETRI_PLACES=491, PETRI_TRANSITIONS=756} [2024-06-27 22:59:44,117 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 440 predicate places. [2024-06-27 22:59:44,117 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 756 transitions, 14553 flow [2024-06-27 22:59:44,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:59:44,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:59:44,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:59:44,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 22:59:44,118 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:59:44,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:59:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1993537516, now seen corresponding path program 20 times [2024-06-27 22:59:44,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:59:44,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799489928] [2024-06-27 22:59:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:59:44,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:59:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:59:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:59:47,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:59:47,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799489928] [2024-06-27 22:59:47,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799489928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:59:47,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:59:47,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:59:47,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993534962] [2024-06-27 22:59:47,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:59:47,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:59:47,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:59:47,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:59:47,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:59:47,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:59:47,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 756 transitions, 14553 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:59:47,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:59:47,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:59:47,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:59:54,295 INFO L124 PetriNetUnfolderBase]: 9075/14433 cut-off events. [2024-06-27 22:59:54,295 INFO L125 PetriNetUnfolderBase]: For 540042/540064 co-relation queries the response was YES. [2024-06-27 22:59:54,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98931 conditions, 14433 events. 9075/14433 cut-off events. For 540042/540064 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 98510 event pairs, 3461 based on Foata normal form. 20/14452 useless extension candidates. Maximal degree in co-relation 98733. Up to 12553 conditions per place. [2024-06-27 22:59:54,534 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 482 selfloop transitions, 325 changer transitions 0/814 dead transitions. [2024-06-27 22:59:54,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 814 transitions, 16810 flow [2024-06-27 22:59:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-27 22:59:54,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-27 22:59:54,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 366 transitions. [2024-06-27 22:59:54,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40985442329227323 [2024-06-27 22:59:54,541 INFO L175 Difference]: Start difference. First operand has 491 places, 756 transitions, 14553 flow. Second operand 19 states and 366 transitions. [2024-06-27 22:59:54,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 814 transitions, 16810 flow [2024-06-27 22:59:57,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 814 transitions, 16406 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-27 22:59:57,367 INFO L231 Difference]: Finished difference. Result has 500 places, 763 transitions, 14957 flow [2024-06-27 22:59:57,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=14149, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=14957, PETRI_PLACES=500, PETRI_TRANSITIONS=763} [2024-06-27 22:59:57,368 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 449 predicate places. [2024-06-27 22:59:57,368 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 763 transitions, 14957 flow [2024-06-27 22:59:57,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:59:57,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:59:57,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:59:57,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 22:59:57,369 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:59:57,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:59:57,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2124298260, now seen corresponding path program 21 times [2024-06-27 22:59:57,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:59:57,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515785591] [2024-06-27 22:59:57,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:59:57,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:59:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:01,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:01,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:01,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515785591] [2024-06-27 23:00:01,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515785591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:01,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:01,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:00:01,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853743950] [2024-06-27 23:00:01,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:01,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:00:01,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:01,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:00:01,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:00:01,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 23:00:01,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 763 transitions, 14957 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:01,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:01,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 23:00:01,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:08,813 INFO L124 PetriNetUnfolderBase]: 9077/14433 cut-off events. [2024-06-27 23:00:08,813 INFO L125 PetriNetUnfolderBase]: For 547121/547143 co-relation queries the response was YES. [2024-06-27 23:00:08,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99323 conditions, 14433 events. 9077/14433 cut-off events. For 547121/547143 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 98479 event pairs, 3462 based on Foata normal form. 20/14452 useless extension candidates. Maximal degree in co-relation 99125. Up to 12557 conditions per place. [2024-06-27 23:00:09,016 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 477 selfloop transitions, 334 changer transitions 0/818 dead transitions. [2024-06-27 23:00:09,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 818 transitions, 17021 flow [2024-06-27 23:00:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-27 23:00:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-27 23:00:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 348 transitions. [2024-06-27 23:00:09,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41134751773049644 [2024-06-27 23:00:09,017 INFO L175 Difference]: Start difference. First operand has 500 places, 763 transitions, 14957 flow. Second operand 18 states and 348 transitions. [2024-06-27 23:00:09,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 818 transitions, 17021 flow Killed by 15