./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi008.opt.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/rfi008.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi008.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi008.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:32:31,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:32:31,694 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:32:31,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:32:31,705 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:32:31,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:32:31,728 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:32:31,728 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:32:31,729 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:32:31,730 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:32:31,730 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:32:31,731 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:32:31,732 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:32:31,734 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:32:31,734 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:32:31,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:32:31,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:32:31,738 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:32:31,739 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:32:31,739 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:32:31,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:32:31,740 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:32:31,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:32:31,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:32:31,741 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:32:31,741 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:32:31,741 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:32:31,742 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:32:31,742 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:32:31,742 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:32:31,743 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:32:31,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:32:31,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:32:31,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:32:31,745 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:32:31,745 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:32:31,745 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:32:31,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:32:31,755 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:32:31,755 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:32:31,755 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:32:31,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:32:31,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:32:31,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:32:32,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:32:32,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:32:32,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:32:32,066 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:32:32,067 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:32:32,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi008.opt.yml/witness.yml [2024-06-27 22:32:32,152 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:32:32,152 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:32:32,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi008.opt.i [2024-06-27 22:32:33,294 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:32:33,571 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:32:33,572 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.opt.i [2024-06-27 22:32:33,584 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad866ea45/e969b8310b6d43f6a84e79c31239c451/FLAG58958943e [2024-06-27 22:32:33,600 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad866ea45/e969b8310b6d43f6a84e79c31239c451 [2024-06-27 22:32:33,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:32:33,602 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:32:33,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:32:33,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:32:33,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:32:33,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:32:32" (1/2) ... [2024-06-27 22:32:33,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7158c93b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:33, skipping insertion in model container [2024-06-27 22:32:33,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:32:32" (1/2) ... [2024-06-27 22:32:33,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b1015a0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:33, skipping insertion in model container [2024-06-27 22:32:33,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:32:33" (2/2) ... [2024-06-27 22:32:33,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7158c93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:33, skipping insertion in model container [2024-06-27 22:32:33,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:32:33" (2/2) ... [2024-06-27 22:32:33,618 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:32:33,643 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:32:33,644 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:32:33,644 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:32:33,645 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:32:33,645 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-27 22:32:33,691 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:32:33,865 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/rfi008.opt.i[987,1000] [2024-06-27 22:32:34,025 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:32:34,036 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:32:34,082 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/rfi008.opt.i[987,1000] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:32:34,208 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:32:34,243 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:32:34,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:34 WrapperNode [2024-06-27 22:32:34,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:32:34,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:32:34,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:32:34,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:32:34,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:34" (1/1) ... [2024-06-27 22:32:34,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:34" (1/1) ... [2024-06-27 22:32:34,339 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-06-27 22:32:34,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:32:34,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:32:34,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:32:34,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:32:34,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:34" (1/1) ... [2024-06-27 22:32:34,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:34" (1/1) ... [2024-06-27 22:32:34,367 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:34" (1/1) ... [2024-06-27 22:32:34,452 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:32:34,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:34" (1/1) ... [2024-06-27 22:32:34,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:34" (1/1) ... [2024-06-27 22:32:34,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:34" (1/1) ... [2024-06-27 22:32:34,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:34" (1/1) ... [2024-06-27 22:32:34,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:34" (1/1) ... [2024-06-27 22:32:34,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:34" (1/1) ... [2024-06-27 22:32:34,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:32:34,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:32:34,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:32:34,500 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:32:34,500 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:34" (1/1) ... [2024-06-27 22:32:34,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:32:34,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:32:34,536 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 22:32:34,538 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 22:32:34,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:32:34,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:32:34,564 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:32:34,564 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:32:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:32:34,565 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:32:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:32:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:32:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:32:34,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:32:34,567 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 22:32:34,697 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:32:34,698 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:32:35,066 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:32:35,069 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:32:35,287 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:32:35,288 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:32:35,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:32:35 BoogieIcfgContainer [2024-06-27 22:32:35,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:32:35,293 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:32:35,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:32:35,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:32:35,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:32:32" (1/4) ... [2024-06-27 22:32:35,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bab7490 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:32:35, skipping insertion in model container [2024-06-27 22:32:35,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:32:33" (2/4) ... [2024-06-27 22:32:35,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bab7490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:32:35, skipping insertion in model container [2024-06-27 22:32:35,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:34" (3/4) ... [2024-06-27 22:32:35,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bab7490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:32:35, skipping insertion in model container [2024-06-27 22:32:35,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:32:35" (4/4) ... [2024-06-27 22:32:35,300 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi008.opt.i [2024-06-27 22:32:35,316 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:32:35,317 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:32:35,317 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:32:35,369 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:32:35,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 22:32:35,438 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 22:32:35,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:32:35,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-27 22:32:35,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 22:32:35,448 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 22:32:35,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:32:35,461 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;@4a0c3871, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:32:35,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:32:35,465 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:32:35,465 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:32:35,465 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:32:35,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:35,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:32:35,467 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:35,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:35,472 INFO L85 PathProgramCache]: Analyzing trace with hash 345507155, now seen corresponding path program 1 times [2024-06-27 22:32:35,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:35,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491378194] [2024-06-27 22:32:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:35,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:37,023 INFO 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 22:32:37,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:37,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491378194] [2024-06-27 22:32:37,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491378194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:37,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:37,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:32:37,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285826320] [2024-06-27 22:32:37,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:37,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:32:37,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:37,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:32:37,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:32:37,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-27 22:32:37,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 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 22:32:37,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:37,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-27 22:32:37,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:37,430 INFO L124 PetriNetUnfolderBase]: 372/770 cut-off events. [2024-06-27 22:32:37,431 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 22:32:37,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1415 conditions, 770 events. 372/770 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4289 event pairs, 284 based on Foata normal form. 30/726 useless extension candidates. Maximal degree in co-relation 1404. Up to 620 conditions per place. [2024-06-27 22:32:37,442 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 29 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-06-27 22:32:37,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 161 flow [2024-06-27 22:32:37,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:32:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:32:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-27 22:32:37,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7117117117117117 [2024-06-27 22:32:37,456 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 79 transitions. [2024-06-27 22:32:37,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 161 flow [2024-06-27 22:32:37,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:37,461 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 95 flow [2024-06-27 22:32:37,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-06-27 22:32:37,466 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 22:32:37,467 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 95 flow [2024-06-27 22:32:37,467 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 22:32:37,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:37,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:37,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:32:37,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:37,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:37,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1319925042, now seen corresponding path program 1 times [2024-06-27 22:32:37,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:37,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466521473] [2024-06-27 22:32:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:37,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:38,668 INFO 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 22:32:38,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:38,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466521473] [2024-06-27 22:32:38,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466521473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:38,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:38,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:32:38,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545543726] [2024-06-27 22:32:38,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:38,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:32:38,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:38,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:32:38,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:32:38,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:32:38,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:38,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:38,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:32:38,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:38,947 INFO L124 PetriNetUnfolderBase]: 515/899 cut-off events. [2024-06-27 22:32:38,947 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-27 22:32:38,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 899 events. 515/899 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4531 event pairs, 247 based on Foata normal form. 2/862 useless extension candidates. Maximal degree in co-relation 1946. Up to 832 conditions per place. [2024-06-27 22:32:38,954 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 39 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-06-27 22:32:38,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 225 flow [2024-06-27 22:32:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:32:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:32:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-06-27 22:32:38,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6418918918918919 [2024-06-27 22:32:38,956 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 95 flow. Second operand 4 states and 95 transitions. [2024-06-27 22:32:38,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 225 flow [2024-06-27 22:32:38,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:38,958 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 121 flow [2024-06-27 22:32:38,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-27 22:32:38,959 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-27 22:32:38,959 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 121 flow [2024-06-27 22:32:38,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:38,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:38,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:38,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:32:38,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:38,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:38,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2031995632, now seen corresponding path program 1 times [2024-06-27 22:32:38,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:38,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841542749] [2024-06-27 22:32:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:38,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:40,221 INFO 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 22:32:40,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:40,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841542749] [2024-06-27 22:32:40,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841542749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:40,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:40,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:32:40,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959874274] [2024-06-27 22:32:40,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:40,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:32:40,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:40,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:32:40,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:32:40,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:32:40,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:40,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:40,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:32:40,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:40,497 INFO L124 PetriNetUnfolderBase]: 499/851 cut-off events. [2024-06-27 22:32:40,497 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-27 22:32:40,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2041 conditions, 851 events. 499/851 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4216 event pairs, 138 based on Foata normal form. 2/829 useless extension candidates. Maximal degree in co-relation 2027. Up to 790 conditions per place. [2024-06-27 22:32:40,504 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 47 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-06-27 22:32:40,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 291 flow [2024-06-27 22:32:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:40,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 22:32:40,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6324324324324324 [2024-06-27 22:32:40,511 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 121 flow. Second operand 5 states and 117 transitions. [2024-06-27 22:32:40,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 291 flow [2024-06-27 22:32:40,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 282 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:40,514 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 147 flow [2024-06-27 22:32:40,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-06-27 22:32:40,516 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-06-27 22:32:40,516 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 147 flow [2024-06-27 22:32:40,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:40,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:40,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:40,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:32:40,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:40,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:40,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1709702205, now seen corresponding path program 1 times [2024-06-27 22:32:40,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:40,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147973524] [2024-06-27 22:32:40,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:40,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:42,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:42,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147973524] [2024-06-27 22:32:42,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147973524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:42,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:42,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:42,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271220711] [2024-06-27 22:32:42,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:42,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:42,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:42,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:42,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:42,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:32:42,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:42,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:42,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:32:42,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:43,122 INFO L124 PetriNetUnfolderBase]: 483/962 cut-off events. [2024-06-27 22:32:43,123 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2024-06-27 22:32:43,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 962 events. 483/962 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5332 event pairs, 225 based on Foata normal form. 2/907 useless extension candidates. Maximal degree in co-relation 2242. Up to 748 conditions per place. [2024-06-27 22:32:43,129 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 55 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-27 22:32:43,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 74 transitions, 357 flow [2024-06-27 22:32:43,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:43,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:43,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 22:32:43,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6261261261261262 [2024-06-27 22:32:43,131 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 147 flow. Second operand 6 states and 139 transitions. [2024-06-27 22:32:43,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 74 transitions, 357 flow [2024-06-27 22:32:43,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 342 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:43,134 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 173 flow [2024-06-27 22:32:43,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-27 22:32:43,135 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-27 22:32:43,135 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 173 flow [2024-06-27 22:32:43,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:43,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:43,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:43,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:32:43,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:43,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:43,137 INFO L85 PathProgramCache]: Analyzing trace with hash 903386637, now seen corresponding path program 1 times [2024-06-27 22:32:43,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:43,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621152350] [2024-06-27 22:32:43,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:43,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:44,116 INFO 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 22:32:44,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:44,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621152350] [2024-06-27 22:32:44,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621152350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:44,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:44,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:32:44,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13345155] [2024-06-27 22:32:44,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:44,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:32:44,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:44,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:32:44,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:32:44,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:32:44,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:44,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:44,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:32:44,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:44,515 INFO L124 PetriNetUnfolderBase]: 431/909 cut-off events. [2024-06-27 22:32:44,516 INFO L125 PetriNetUnfolderBase]: For 696/702 co-relation queries the response was YES. [2024-06-27 22:32:44,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2227 conditions, 909 events. 431/909 cut-off events. For 696/702 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5208 event pairs, 176 based on Foata normal form. 7/861 useless extension candidates. Maximal degree in co-relation 2210. Up to 720 conditions per place. [2024-06-27 22:32:44,523 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 37 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2024-06-27 22:32:44,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 319 flow [2024-06-27 22:32:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:44,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-27 22:32:44,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509009009009009 [2024-06-27 22:32:44,525 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 173 flow. Second operand 6 states and 113 transitions. [2024-06-27 22:32:44,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 319 flow [2024-06-27 22:32:44,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 292 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:44,528 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 225 flow [2024-06-27 22:32:44,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-27 22:32:44,529 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-27 22:32:44,529 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 225 flow [2024-06-27 22:32:44,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:44,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:44,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:44,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:32:44,530 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:44,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:44,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1911752464, now seen corresponding path program 1 times [2024-06-27 22:32:44,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:44,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186008997] [2024-06-27 22:32:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:44,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:46,334 INFO 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 22:32:46,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:46,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186008997] [2024-06-27 22:32:46,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186008997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:46,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:46,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:46,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018942568] [2024-06-27 22:32:46,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:46,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:46,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:46,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:46,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:46,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:32:46,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:46,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:46,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:32:46,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:46,699 INFO L124 PetriNetUnfolderBase]: 458/810 cut-off events. [2024-06-27 22:32:46,700 INFO L125 PetriNetUnfolderBase]: For 931/931 co-relation queries the response was YES. [2024-06-27 22:32:46,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2241 conditions, 810 events. 458/810 cut-off events. For 931/931 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4020 event pairs, 41 based on Foata normal form. 4/804 useless extension candidates. Maximal degree in co-relation 2221. Up to 670 conditions per place. [2024-06-27 22:32:46,706 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 55 selfloop transitions, 13 changer transitions 6/84 dead transitions. [2024-06-27 22:32:46,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 84 transitions, 447 flow [2024-06-27 22:32:46,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 22:32:46,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5984555984555985 [2024-06-27 22:32:46,708 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 225 flow. Second operand 7 states and 155 transitions. [2024-06-27 22:32:46,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 84 transitions, 447 flow [2024-06-27 22:32:46,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 443 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:46,713 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 229 flow [2024-06-27 22:32:46,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-06-27 22:32:46,716 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-27 22:32:46,716 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 229 flow [2024-06-27 22:32:46,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:46,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:46,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:46,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:32:46,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:46,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:46,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2048165201, now seen corresponding path program 1 times [2024-06-27 22:32:46,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:46,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165910135] [2024-06-27 22:32:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:46,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:48,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:48,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165910135] [2024-06-27 22:32:48,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165910135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:48,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:48,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:48,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330418659] [2024-06-27 22:32:48,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:48,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:48,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:48,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:48,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:48,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:32:48,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:48,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:48,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:32:48,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:48,851 INFO L124 PetriNetUnfolderBase]: 415/871 cut-off events. [2024-06-27 22:32:48,852 INFO L125 PetriNetUnfolderBase]: For 1229/1231 co-relation queries the response was YES. [2024-06-27 22:32:48,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2317 conditions, 871 events. 415/871 cut-off events. For 1229/1231 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4879 event pairs, 143 based on Foata normal form. 3/836 useless extension candidates. Maximal degree in co-relation 2294. Up to 684 conditions per place. [2024-06-27 22:32:48,859 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 40 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-06-27 22:32:48,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 371 flow [2024-06-27 22:32:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:48,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-27 22:32:48,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 22:32:48,861 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 229 flow. Second operand 6 states and 112 transitions. [2024-06-27 22:32:48,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 371 flow [2024-06-27 22:32:48,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 339 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:48,865 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 238 flow [2024-06-27 22:32:48,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=238, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2024-06-27 22:32:48,867 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-27 22:32:48,867 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 238 flow [2024-06-27 22:32:48,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:48,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:48,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:48,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:32:48,868 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:48,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash 564510764, now seen corresponding path program 1 times [2024-06-27 22:32:48,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:48,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326773305] [2024-06-27 22:32:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:49,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:49,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326773305] [2024-06-27 22:32:49,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326773305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:49,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:49,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:49,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405046826] [2024-06-27 22:32:49,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:49,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:49,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:49,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:49,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:49,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:32:49,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:49,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:49,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:32:49,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:50,400 INFO L124 PetriNetUnfolderBase]: 476/973 cut-off events. [2024-06-27 22:32:50,400 INFO L125 PetriNetUnfolderBase]: For 1398/1398 co-relation queries the response was YES. [2024-06-27 22:32:50,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 973 events. 476/973 cut-off events. For 1398/1398 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5289 event pairs, 141 based on Foata normal form. 1/928 useless extension candidates. Maximal degree in co-relation 2591. Up to 761 conditions per place. [2024-06-27 22:32:50,408 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 47 selfloop transitions, 17 changer transitions 0/72 dead transitions. [2024-06-27 22:32:50,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 444 flow [2024-06-27 22:32:50,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:50,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 22:32:50,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:32:50,410 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 238 flow. Second operand 7 states and 119 transitions. [2024-06-27 22:32:50,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 444 flow [2024-06-27 22:32:50,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 72 transitions, 419 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:50,419 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 319 flow [2024-06-27 22:32:50,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-06-27 22:32:50,422 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-06-27 22:32:50,423 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 319 flow [2024-06-27 22:32:50,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:50,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:50,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:50,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:32:50,424 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:50,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash 571206764, now seen corresponding path program 2 times [2024-06-27 22:32:50,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:50,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255321628] [2024-06-27 22:32:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:50,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:51,635 INFO 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 22:32:51,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:51,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255321628] [2024-06-27 22:32:51,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255321628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:51,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:51,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:51,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917207974] [2024-06-27 22:32:51,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:51,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:51,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:51,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:51,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:51,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:32:51,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:51,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:51,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:32:51,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:52,024 INFO L124 PetriNetUnfolderBase]: 484/987 cut-off events. [2024-06-27 22:32:52,024 INFO L125 PetriNetUnfolderBase]: For 1875/1875 co-relation queries the response was YES. [2024-06-27 22:32:52,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2836 conditions, 987 events. 484/987 cut-off events. For 1875/1875 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5362 event pairs, 145 based on Foata normal form. 1/941 useless extension candidates. Maximal degree in co-relation 2809. Up to 751 conditions per place. [2024-06-27 22:32:52,053 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 45 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2024-06-27 22:32:52,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 78 transitions, 537 flow [2024-06-27 22:32:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 22:32:52,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46332046332046334 [2024-06-27 22:32:52,055 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 319 flow. Second operand 7 states and 120 transitions. [2024-06-27 22:32:52,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 78 transitions, 537 flow [2024-06-27 22:32:52,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 78 transitions, 525 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:52,059 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 405 flow [2024-06-27 22:32:52,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=405, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-06-27 22:32:52,060 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2024-06-27 22:32:52,061 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 405 flow [2024-06-27 22:32:52,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:52,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:52,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:52,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:32:52,062 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:52,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:52,062 INFO L85 PathProgramCache]: Analyzing trace with hash -77385556, now seen corresponding path program 3 times [2024-06-27 22:32:52,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:52,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990853326] [2024-06-27 22:32:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:52,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:52,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:52,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990853326] [2024-06-27 22:32:52,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990853326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:52,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:52,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:52,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341983253] [2024-06-27 22:32:52,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:52,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:52,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:52,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:52,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:52,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:32:52,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 405 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:52,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:52,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:32:52,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:53,334 INFO L124 PetriNetUnfolderBase]: 490/995 cut-off events. [2024-06-27 22:32:53,334 INFO L125 PetriNetUnfolderBase]: For 2424/2424 co-relation queries the response was YES. [2024-06-27 22:32:53,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3075 conditions, 995 events. 490/995 cut-off events. For 2424/2424 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5405 event pairs, 140 based on Foata normal form. 1/951 useless extension candidates. Maximal degree in co-relation 3045. Up to 778 conditions per place. [2024-06-27 22:32:53,341 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 58 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2024-06-27 22:32:53,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 89 transitions, 653 flow [2024-06-27 22:32:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-27 22:32:53,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5180180180180181 [2024-06-27 22:32:53,343 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 405 flow. Second operand 6 states and 115 transitions. [2024-06-27 22:32:53,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 89 transitions, 653 flow [2024-06-27 22:32:53,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 89 transitions, 620 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:53,350 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 492 flow [2024-06-27 22:32:53,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=492, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2024-06-27 22:32:53,352 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2024-06-27 22:32:53,352 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 492 flow [2024-06-27 22:32:53,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:53,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:53,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:53,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:32:53,354 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:53,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:53,355 INFO L85 PathProgramCache]: Analyzing trace with hash 571216684, now seen corresponding path program 1 times [2024-06-27 22:32:53,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:53,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549546225] [2024-06-27 22:32:53,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:53,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:55,919 INFO 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 22:32:55,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:55,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549546225] [2024-06-27 22:32:55,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549546225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:55,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:55,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:55,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704307459] [2024-06-27 22:32:55,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:55,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:55,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:55,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:55,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:56,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:32:56,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 492 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:56,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:56,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:32:56,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:56,673 INFO L124 PetriNetUnfolderBase]: 450/955 cut-off events. [2024-06-27 22:32:56,673 INFO L125 PetriNetUnfolderBase]: For 2621/2621 co-relation queries the response was YES. [2024-06-27 22:32:56,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2978 conditions, 955 events. 450/955 cut-off events. For 2621/2621 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5374 event pairs, 139 based on Foata normal form. 1/911 useless extension candidates. Maximal degree in co-relation 2946. Up to 711 conditions per place. [2024-06-27 22:32:56,682 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 59 selfloop transitions, 16 changer transitions 0/93 dead transitions. [2024-06-27 22:32:56,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 714 flow [2024-06-27 22:32:56,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:56,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 22:32:56,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-27 22:32:56,684 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 492 flow. Second operand 7 states and 128 transitions. [2024-06-27 22:32:56,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 714 flow [2024-06-27 22:32:56,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 93 transitions, 665 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:56,690 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 529 flow [2024-06-27 22:32:56,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=529, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2024-06-27 22:32:56,691 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2024-06-27 22:32:56,691 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 529 flow [2024-06-27 22:32:56,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:56,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:56,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:56,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:32:56,692 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:56,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:56,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1316779002, now seen corresponding path program 1 times [2024-06-27 22:32:56,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:56,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553337694] [2024-06-27 22:32:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:56,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:57,713 INFO 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 22:32:57,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:57,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553337694] [2024-06-27 22:32:57,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553337694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:57,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:57,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:57,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197777405] [2024-06-27 22:32:57,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:57,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:57,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:57,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:57,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:57,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:32:57,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 529 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:57,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:57,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:32:57,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:58,241 INFO L124 PetriNetUnfolderBase]: 505/1020 cut-off events. [2024-06-27 22:32:58,241 INFO L125 PetriNetUnfolderBase]: For 3312/3312 co-relation queries the response was YES. [2024-06-27 22:32:58,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3431 conditions, 1020 events. 505/1020 cut-off events. For 3312/3312 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5535 event pairs, 130 based on Foata normal form. 1/974 useless extension candidates. Maximal degree in co-relation 3397. Up to 780 conditions per place. [2024-06-27 22:32:58,248 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 71 selfloop transitions, 26 changer transitions 0/105 dead transitions. [2024-06-27 22:32:58,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 837 flow [2024-06-27 22:32:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:58,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 22:32:58,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 22:32:58,251 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 529 flow. Second operand 8 states and 138 transitions. [2024-06-27 22:32:58,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 837 flow [2024-06-27 22:32:58,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 105 transitions, 806 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:58,258 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 645 flow [2024-06-27 22:32:58,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=645, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2024-06-27 22:32:58,258 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-06-27 22:32:58,258 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 645 flow [2024-06-27 22:32:58,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:58,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:58,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:58,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:32:58,259 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:58,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1034031294, now seen corresponding path program 1 times [2024-06-27 22:32:58,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:58,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897103737] [2024-06-27 22:32:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:58,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:59,749 INFO 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 22:32:59,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:59,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897103737] [2024-06-27 22:32:59,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897103737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:59,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:59,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:59,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033940918] [2024-06-27 22:32:59,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:59,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:59,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:59,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:59,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:59,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:32:59,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 645 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:59,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:59,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:32:59,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:00,217 INFO L124 PetriNetUnfolderBase]: 516/1035 cut-off events. [2024-06-27 22:33:00,217 INFO L125 PetriNetUnfolderBase]: For 3995/3995 co-relation queries the response was YES. [2024-06-27 22:33:00,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3699 conditions, 1035 events. 516/1035 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5609 event pairs, 127 based on Foata normal form. 1/989 useless extension candidates. Maximal degree in co-relation 3662. Up to 807 conditions per place. [2024-06-27 22:33:00,225 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 75 selfloop transitions, 25 changer transitions 0/108 dead transitions. [2024-06-27 22:33:00,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 108 transitions, 909 flow [2024-06-27 22:33:00,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:00,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-27 22:33:00,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:33:00,226 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 645 flow. Second operand 7 states and 126 transitions. [2024-06-27 22:33:00,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 108 transitions, 909 flow [2024-06-27 22:33:00,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 108 transitions, 874 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-27 22:33:00,234 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 682 flow [2024-06-27 22:33:00,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=682, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2024-06-27 22:33:00,235 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2024-06-27 22:33:00,235 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 682 flow [2024-06-27 22:33:00,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:00,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:00,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:00,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:33:00,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:00,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:00,237 INFO L85 PathProgramCache]: Analyzing trace with hash 319965886, now seen corresponding path program 2 times [2024-06-27 22:33:00,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:00,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897510037] [2024-06-27 22:33:00,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:00,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:01,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:01,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897510037] [2024-06-27 22:33:01,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897510037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:01,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:01,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:01,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620752701] [2024-06-27 22:33:01,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:01,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:01,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:01,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:01,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:01,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:01,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 92 transitions, 682 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:01,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:01,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:01,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:01,845 INFO L124 PetriNetUnfolderBase]: 524/1049 cut-off events. [2024-06-27 22:33:01,845 INFO L125 PetriNetUnfolderBase]: For 4669/4669 co-relation queries the response was YES. [2024-06-27 22:33:01,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3909 conditions, 1049 events. 524/1049 cut-off events. For 4669/4669 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5677 event pairs, 130 based on Foata normal form. 1/1002 useless extension candidates. Maximal degree in co-relation 3869. Up to 790 conditions per place. [2024-06-27 22:33:01,853 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 69 selfloop transitions, 33 changer transitions 0/110 dead transitions. [2024-06-27 22:33:01,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 110 transitions, 956 flow [2024-06-27 22:33:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:01,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:01,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 22:33:01,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980694980694981 [2024-06-27 22:33:01,855 INFO L175 Difference]: Start difference. First operand has 88 places, 92 transitions, 682 flow. Second operand 7 states and 129 transitions. [2024-06-27 22:33:01,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 110 transitions, 956 flow [2024-06-27 22:33:01,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 110 transitions, 904 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:01,864 INFO L231 Difference]: Finished difference. Result has 90 places, 95 transitions, 737 flow [2024-06-27 22:33:01,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=737, PETRI_PLACES=90, PETRI_TRANSITIONS=95} [2024-06-27 22:33:01,865 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 49 predicate places. [2024-06-27 22:33:01,865 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 95 transitions, 737 flow [2024-06-27 22:33:01,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:01,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:01,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:01,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:33:01,865 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:01,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:01,866 INFO L85 PathProgramCache]: Analyzing trace with hash 527838804, now seen corresponding path program 2 times [2024-06-27 22:33:01,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:01,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498245395] [2024-06-27 22:33:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:01,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:03,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:03,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498245395] [2024-06-27 22:33:03,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498245395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:03,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:03,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:03,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989301183] [2024-06-27 22:33:03,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:03,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:03,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:03,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:03,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:03,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:03,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 95 transitions, 737 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:03,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:03,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:03,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:04,159 INFO L124 PetriNetUnfolderBase]: 532/1060 cut-off events. [2024-06-27 22:33:04,160 INFO L125 PetriNetUnfolderBase]: For 5528/5528 co-relation queries the response was YES. [2024-06-27 22:33:04,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4118 conditions, 1060 events. 532/1060 cut-off events. For 5528/5528 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5739 event pairs, 130 based on Foata normal form. 1/1013 useless extension candidates. Maximal degree in co-relation 4077. Up to 786 conditions per place. [2024-06-27 22:33:04,168 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 69 selfloop transitions, 41 changer transitions 0/118 dead transitions. [2024-06-27 22:33:04,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 118 transitions, 1095 flow [2024-06-27 22:33:04,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:04,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:04,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 22:33:04,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49034749034749037 [2024-06-27 22:33:04,170 INFO L175 Difference]: Start difference. First operand has 90 places, 95 transitions, 737 flow. Second operand 7 states and 127 transitions. [2024-06-27 22:33:04,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 118 transitions, 1095 flow [2024-06-27 22:33:04,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 118 transitions, 1012 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:04,180 INFO L231 Difference]: Finished difference. Result has 93 places, 103 transitions, 835 flow [2024-06-27 22:33:04,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=835, PETRI_PLACES=93, PETRI_TRANSITIONS=103} [2024-06-27 22:33:04,181 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 52 predicate places. [2024-06-27 22:33:04,181 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 103 transitions, 835 flow [2024-06-27 22:33:04,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:04,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:04,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:04,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:33:04,182 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:04,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:04,183 INFO L85 PathProgramCache]: Analyzing trace with hash 527541886, now seen corresponding path program 3 times [2024-06-27 22:33:04,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:04,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049872220] [2024-06-27 22:33:04,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:04,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:05,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:05,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049872220] [2024-06-27 22:33:05,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049872220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:05,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:05,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:05,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211397414] [2024-06-27 22:33:05,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:05,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:05,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:05,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:05,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:05,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:05,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 103 transitions, 835 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:05,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:05,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:05,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:05,777 INFO L124 PetriNetUnfolderBase]: 550/1094 cut-off events. [2024-06-27 22:33:05,778 INFO L125 PetriNetUnfolderBase]: For 6905/6905 co-relation queries the response was YES. [2024-06-27 22:33:05,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4452 conditions, 1094 events. 550/1094 cut-off events. For 6905/6905 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5931 event pairs, 146 based on Foata normal form. 1/1047 useless extension candidates. Maximal degree in co-relation 4409. Up to 763 conditions per place. [2024-06-27 22:33:05,786 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 75 selfloop transitions, 47 changer transitions 0/130 dead transitions. [2024-06-27 22:33:05,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 130 transitions, 1261 flow [2024-06-27 22:33:05,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:05,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-27 22:33:05,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096525096525096 [2024-06-27 22:33:05,790 INFO L175 Difference]: Start difference. First operand has 93 places, 103 transitions, 835 flow. Second operand 7 states and 132 transitions. [2024-06-27 22:33:05,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 130 transitions, 1261 flow [2024-06-27 22:33:05,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 130 transitions, 1188 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:05,803 INFO L231 Difference]: Finished difference. Result has 100 places, 115 transitions, 1041 flow [2024-06-27 22:33:05,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1041, PETRI_PLACES=100, PETRI_TRANSITIONS=115} [2024-06-27 22:33:05,804 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 59 predicate places. [2024-06-27 22:33:05,804 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 115 transitions, 1041 flow [2024-06-27 22:33:05,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:05,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:05,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:05,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:33:05,805 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:05,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:05,806 INFO L85 PathProgramCache]: Analyzing trace with hash 527542134, now seen corresponding path program 3 times [2024-06-27 22:33:05,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:05,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841500553] [2024-06-27 22:33:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:05,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:07,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:07,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:07,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841500553] [2024-06-27 22:33:07,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841500553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:07,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:07,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:07,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803644047] [2024-06-27 22:33:07,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:07,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:07,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:07,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:07,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:07,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:07,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 115 transitions, 1041 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:07,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:07,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:07,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:07,653 INFO L124 PetriNetUnfolderBase]: 561/1112 cut-off events. [2024-06-27 22:33:07,654 INFO L125 PetriNetUnfolderBase]: For 7942/7942 co-relation queries the response was YES. [2024-06-27 22:33:07,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4903 conditions, 1112 events. 561/1112 cut-off events. For 7942/7942 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 6058 event pairs, 138 based on Foata normal form. 1/1066 useless extension candidates. Maximal degree in co-relation 4854. Up to 856 conditions per place. [2024-06-27 22:33:07,662 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 92 selfloop transitions, 35 changer transitions 0/135 dead transitions. [2024-06-27 22:33:07,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 135 transitions, 1384 flow [2024-06-27 22:33:07,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:07,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-27 22:33:07,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:33:07,664 INFO L175 Difference]: Start difference. First operand has 100 places, 115 transitions, 1041 flow. Second operand 7 states and 126 transitions. [2024-06-27 22:33:07,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 135 transitions, 1384 flow [2024-06-27 22:33:07,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 135 transitions, 1344 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-27 22:33:07,680 INFO L231 Difference]: Finished difference. Result has 106 places, 119 transitions, 1126 flow [2024-06-27 22:33:07,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1126, PETRI_PLACES=106, PETRI_TRANSITIONS=119} [2024-06-27 22:33:07,681 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 65 predicate places. [2024-06-27 22:33:07,681 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 119 transitions, 1126 flow [2024-06-27 22:33:07,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:07,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:07,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:07,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:33:07,682 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:07,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:07,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1895865786, now seen corresponding path program 4 times [2024-06-27 22:33:07,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:07,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59500471] [2024-06-27 22:33:07,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:07,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:08,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:08,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:08,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59500471] [2024-06-27 22:33:08,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59500471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:08,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:08,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:08,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029926094] [2024-06-27 22:33:08,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:08,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:08,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:08,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:08,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:08,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:08,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 119 transitions, 1126 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:08,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:08,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:08,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:09,046 INFO L124 PetriNetUnfolderBase]: 616/1205 cut-off events. [2024-06-27 22:33:09,046 INFO L125 PetriNetUnfolderBase]: For 9433/9433 co-relation queries the response was YES. [2024-06-27 22:33:09,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5531 conditions, 1205 events. 616/1205 cut-off events. For 9433/9433 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6577 event pairs, 135 based on Foata normal form. 2/1162 useless extension candidates. Maximal degree in co-relation 5478. Up to 898 conditions per place. [2024-06-27 22:33:09,055 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 108 selfloop transitions, 46 changer transitions 0/162 dead transitions. [2024-06-27 22:33:09,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 162 transitions, 1723 flow [2024-06-27 22:33:09,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:09,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:33:09,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:33:09,057 INFO L175 Difference]: Start difference. First operand has 106 places, 119 transitions, 1126 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:33:09,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 162 transitions, 1723 flow [2024-06-27 22:33:09,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 162 transitions, 1636 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:09,074 INFO L231 Difference]: Finished difference. Result has 110 places, 139 transitions, 1383 flow [2024-06-27 22:33:09,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1383, PETRI_PLACES=110, PETRI_TRANSITIONS=139} [2024-06-27 22:33:09,075 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-06-27 22:33:09,075 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 139 transitions, 1383 flow [2024-06-27 22:33:09,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:09,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:09,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:09,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:33:09,076 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:09,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:09,077 INFO L85 PathProgramCache]: Analyzing trace with hash 404206704, now seen corresponding path program 5 times [2024-06-27 22:33:09,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:09,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140107398] [2024-06-27 22:33:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:09,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:09,805 INFO 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 22:33:09,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:09,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140107398] [2024-06-27 22:33:09,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140107398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:09,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:09,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:09,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086266632] [2024-06-27 22:33:09,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:09,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:09,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:09,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:09,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:09,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:09,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 139 transitions, 1383 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:09,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:09,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:09,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:10,293 INFO L124 PetriNetUnfolderBase]: 636/1236 cut-off events. [2024-06-27 22:33:10,293 INFO L125 PetriNetUnfolderBase]: For 10308/10308 co-relation queries the response was YES. [2024-06-27 22:33:10,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5923 conditions, 1236 events. 636/1236 cut-off events. For 10308/10308 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6753 event pairs, 134 based on Foata normal form. 1/1192 useless extension candidates. Maximal degree in co-relation 5868. Up to 966 conditions per place. [2024-06-27 22:33:10,303 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 122 selfloop transitions, 45 changer transitions 0/175 dead transitions. [2024-06-27 22:33:10,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 175 transitions, 1977 flow [2024-06-27 22:33:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:10,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:10,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 22:33:10,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:33:10,305 INFO L175 Difference]: Start difference. First operand has 110 places, 139 transitions, 1383 flow. Second operand 8 states and 144 transitions. [2024-06-27 22:33:10,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 175 transitions, 1977 flow [2024-06-27 22:33:10,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 175 transitions, 1833 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:10,327 INFO L231 Difference]: Finished difference. Result has 116 places, 154 transitions, 1583 flow [2024-06-27 22:33:10,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1583, PETRI_PLACES=116, PETRI_TRANSITIONS=154} [2024-06-27 22:33:10,328 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2024-06-27 22:33:10,328 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 154 transitions, 1583 flow [2024-06-27 22:33:10,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:10,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:10,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:10,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:33:10,329 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:10,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:10,330 INFO L85 PathProgramCache]: Analyzing trace with hash -930283884, now seen corresponding path program 4 times [2024-06-27 22:33:10,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:10,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131918227] [2024-06-27 22:33:10,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:10,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:11,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:11,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131918227] [2024-06-27 22:33:11,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131918227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:11,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:11,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:11,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234952739] [2024-06-27 22:33:11,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:11,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:11,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:11,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:11,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:11,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:11,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 154 transitions, 1583 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:11,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:11,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:11,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:12,200 INFO L124 PetriNetUnfolderBase]: 638/1239 cut-off events. [2024-06-27 22:33:12,200 INFO L125 PetriNetUnfolderBase]: For 11093/11093 co-relation queries the response was YES. [2024-06-27 22:33:12,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5964 conditions, 1239 events. 638/1239 cut-off events. For 11093/11093 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6763 event pairs, 143 based on Foata normal form. 1/1195 useless extension candidates. Maximal degree in co-relation 5907. Up to 993 conditions per place. [2024-06-27 22:33:12,208 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 140 selfloop transitions, 28 changer transitions 0/176 dead transitions. [2024-06-27 22:33:12,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 176 transitions, 2002 flow [2024-06-27 22:33:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:12,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:12,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-27 22:33:12,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057915057915058 [2024-06-27 22:33:12,213 INFO L175 Difference]: Start difference. First operand has 116 places, 154 transitions, 1583 flow. Second operand 7 states and 131 transitions. [2024-06-27 22:33:12,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 176 transitions, 2002 flow [2024-06-27 22:33:12,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 176 transitions, 1907 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:12,237 INFO L231 Difference]: Finished difference. Result has 118 places, 157 transitions, 1582 flow [2024-06-27 22:33:12,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1582, PETRI_PLACES=118, PETRI_TRANSITIONS=157} [2024-06-27 22:33:12,237 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2024-06-27 22:33:12,237 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 157 transitions, 1582 flow [2024-06-27 22:33:12,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:12,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:12,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:12,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:33:12,238 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:12,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:12,239 INFO L85 PathProgramCache]: Analyzing trace with hash -930284132, now seen corresponding path program 6 times [2024-06-27 22:33:12,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:12,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765975352] [2024-06-27 22:33:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:12,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:13,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:13,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:13,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765975352] [2024-06-27 22:33:13,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765975352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:13,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:13,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:13,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266380270] [2024-06-27 22:33:13,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:13,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:13,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:13,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:13,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:13,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:13,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 157 transitions, 1582 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:13,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:13,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:13,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:13,664 INFO L124 PetriNetUnfolderBase]: 650/1257 cut-off events. [2024-06-27 22:33:13,664 INFO L125 PetriNetUnfolderBase]: For 11244/11244 co-relation queries the response was YES. [2024-06-27 22:33:13,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6068 conditions, 1257 events. 650/1257 cut-off events. For 11244/11244 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6875 event pairs, 120 based on Foata normal form. 1/1212 useless extension candidates. Maximal degree in co-relation 6012. Up to 905 conditions per place. [2024-06-27 22:33:13,673 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 107 selfloop transitions, 71 changer transitions 0/186 dead transitions. [2024-06-27 22:33:13,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 186 transitions, 2164 flow [2024-06-27 22:33:13,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:13,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:13,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:33:13,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:33:13,681 INFO L175 Difference]: Start difference. First operand has 118 places, 157 transitions, 1582 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:33:13,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 186 transitions, 2164 flow [2024-06-27 22:33:13,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 186 transitions, 2107 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:13,713 INFO L231 Difference]: Finished difference. Result has 122 places, 165 transitions, 1837 flow [2024-06-27 22:33:13,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1837, PETRI_PLACES=122, PETRI_TRANSITIONS=165} [2024-06-27 22:33:13,714 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2024-06-27 22:33:13,714 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 165 transitions, 1837 flow [2024-06-27 22:33:13,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:13,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:13,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:13,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:33:13,715 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:13,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:13,716 INFO L85 PathProgramCache]: Analyzing trace with hash 527849716, now seen corresponding path program 1 times [2024-06-27 22:33:13,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:13,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842006325] [2024-06-27 22:33:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:13,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:16,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:16,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:16,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842006325] [2024-06-27 22:33:16,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842006325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:16,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:16,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:16,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704467228] [2024-06-27 22:33:16,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:16,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:16,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:16,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:16,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:16,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:33:16,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 165 transitions, 1837 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:16,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:16,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:33:16,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:16,952 INFO L124 PetriNetUnfolderBase]: 611/1207 cut-off events. [2024-06-27 22:33:16,952 INFO L125 PetriNetUnfolderBase]: For 12414/12428 co-relation queries the response was YES. [2024-06-27 22:33:16,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5950 conditions, 1207 events. 611/1207 cut-off events. For 12414/12428 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6763 event pairs, 134 based on Foata normal form. 9/1168 useless extension candidates. Maximal degree in co-relation 5891. Up to 919 conditions per place. [2024-06-27 22:33:16,961 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 143 selfloop transitions, 18 changer transitions 0/186 dead transitions. [2024-06-27 22:33:16,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 186 transitions, 2247 flow [2024-06-27 22:33:16,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:16,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:16,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:33:16,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 22:33:16,970 INFO L175 Difference]: Start difference. First operand has 122 places, 165 transitions, 1837 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:33:16,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 186 transitions, 2247 flow [2024-06-27 22:33:16,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 186 transitions, 2158 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:16,996 INFO L231 Difference]: Finished difference. Result has 126 places, 167 transitions, 1805 flow [2024-06-27 22:33:16,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1805, PETRI_PLACES=126, PETRI_TRANSITIONS=167} [2024-06-27 22:33:16,996 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 85 predicate places. [2024-06-27 22:33:16,996 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 167 transitions, 1805 flow [2024-06-27 22:33:16,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:16,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:16,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:16,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:33:16,997 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:16,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:16,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1324217931, now seen corresponding path program 1 times [2024-06-27 22:33:16,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:16,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415035552] [2024-06-27 22:33:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:16,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:18,143 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 22:33:18,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:18,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415035552] [2024-06-27 22:33:18,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415035552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:18,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:18,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:18,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850008243] [2024-06-27 22:33:18,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:18,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:18,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:18,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:18,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:18,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:18,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 167 transitions, 1805 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:18,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:18,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:18,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:18,782 INFO L124 PetriNetUnfolderBase]: 665/1282 cut-off events. [2024-06-27 22:33:18,782 INFO L125 PetriNetUnfolderBase]: For 12227/12227 co-relation queries the response was YES. [2024-06-27 22:33:18,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6507 conditions, 1282 events. 665/1282 cut-off events. For 12227/12227 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7079 event pairs, 121 based on Foata normal form. 1/1233 useless extension candidates. Maximal degree in co-relation 6446. Up to 971 conditions per place. [2024-06-27 22:33:18,790 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 132 selfloop transitions, 56 changer transitions 0/196 dead transitions. [2024-06-27 22:33:18,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 196 transitions, 2395 flow [2024-06-27 22:33:18,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:18,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:18,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:33:18,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 22:33:18,792 INFO L175 Difference]: Start difference. First operand has 126 places, 167 transitions, 1805 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:33:18,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 196 transitions, 2395 flow [2024-06-27 22:33:18,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 196 transitions, 2354 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:18,819 INFO L231 Difference]: Finished difference. Result has 129 places, 179 transitions, 2066 flow [2024-06-27 22:33:18,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2066, PETRI_PLACES=129, PETRI_TRANSITIONS=179} [2024-06-27 22:33:18,819 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-06-27 22:33:18,819 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 179 transitions, 2066 flow [2024-06-27 22:33:18,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:18,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:18,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:18,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:33:18,820 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:18,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:18,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1324339048, now seen corresponding path program 1 times [2024-06-27 22:33:18,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:18,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114098765] [2024-06-27 22:33:18,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:18,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:20,246 INFO 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 22:33:20,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:20,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114098765] [2024-06-27 22:33:20,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114098765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:20,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:20,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:20,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196546199] [2024-06-27 22:33:20,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:20,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:20,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:20,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:20,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:20,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 179 transitions, 2066 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:20,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:20,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:20,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:20,767 INFO L124 PetriNetUnfolderBase]: 681/1310 cut-off events. [2024-06-27 22:33:20,767 INFO L125 PetriNetUnfolderBase]: For 13582/13582 co-relation queries the response was YES. [2024-06-27 22:33:20,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6766 conditions, 1310 events. 681/1310 cut-off events. For 13582/13582 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7284 event pairs, 115 based on Foata normal form. 2/1262 useless extension candidates. Maximal degree in co-relation 6704. Up to 960 conditions per place. [2024-06-27 22:33:20,776 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 125 selfloop transitions, 67 changer transitions 0/200 dead transitions. [2024-06-27 22:33:20,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 200 transitions, 2546 flow [2024-06-27 22:33:20,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:20,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:33:20,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-27 22:33:20,779 INFO L175 Difference]: Start difference. First operand has 129 places, 179 transitions, 2066 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:33:20,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 200 transitions, 2546 flow [2024-06-27 22:33:20,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 200 transitions, 2291 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:20,839 INFO L231 Difference]: Finished difference. Result has 130 places, 183 transitions, 2009 flow [2024-06-27 22:33:20,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2009, PETRI_PLACES=130, PETRI_TRANSITIONS=183} [2024-06-27 22:33:20,839 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2024-06-27 22:33:20,840 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 183 transitions, 2009 flow [2024-06-27 22:33:20,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:20,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:20,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:20,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:33:20,840 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:20,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2129522481, now seen corresponding path program 2 times [2024-06-27 22:33:20,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:20,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622628066] [2024-06-27 22:33:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:20,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:21,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:21,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622628066] [2024-06-27 22:33:21,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622628066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:21,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:21,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:21,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048891882] [2024-06-27 22:33:21,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:21,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:21,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:21,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:21,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:22,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:22,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 183 transitions, 2009 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:22,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:22,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:22,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:22,533 INFO L124 PetriNetUnfolderBase]: 689/1326 cut-off events. [2024-06-27 22:33:22,534 INFO L125 PetriNetUnfolderBase]: For 14401/14401 co-relation queries the response was YES. [2024-06-27 22:33:22,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6958 conditions, 1326 events. 689/1326 cut-off events. For 14401/14401 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7376 event pairs, 115 based on Foata normal form. 1/1277 useless extension candidates. Maximal degree in co-relation 6896. Up to 983 conditions per place. [2024-06-27 22:33:22,541 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 129 selfloop transitions, 66 changer transitions 0/203 dead transitions. [2024-06-27 22:33:22,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 203 transitions, 2493 flow [2024-06-27 22:33:22,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:22,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:22,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:33:22,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:33:22,543 INFO L175 Difference]: Start difference. First operand has 130 places, 183 transitions, 2009 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:33:22,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 203 transitions, 2493 flow [2024-06-27 22:33:22,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 203 transitions, 2333 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:22,566 INFO L231 Difference]: Finished difference. Result has 132 places, 186 transitions, 2037 flow [2024-06-27 22:33:22,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1849, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2037, PETRI_PLACES=132, PETRI_TRANSITIONS=186} [2024-06-27 22:33:22,567 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-06-27 22:33:22,567 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 186 transitions, 2037 flow [2024-06-27 22:33:22,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:22,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:22,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:22,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:33:22,568 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:22,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:22,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2124844085, now seen corresponding path program 1 times [2024-06-27 22:33:22,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:22,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400735018] [2024-06-27 22:33:22,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:22,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:24,112 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 22:33:24,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:24,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400735018] [2024-06-27 22:33:24,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400735018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:24,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:24,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:24,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155016860] [2024-06-27 22:33:24,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:24,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:24,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:24,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:24,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:24,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:33:24,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 186 transitions, 2037 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:24,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:24,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:33:24,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:24,593 INFO L124 PetriNetUnfolderBase]: 650/1284 cut-off events. [2024-06-27 22:33:24,593 INFO L125 PetriNetUnfolderBase]: For 15986/15986 co-relation queries the response was YES. [2024-06-27 22:33:24,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6665 conditions, 1284 events. 650/1284 cut-off events. For 15986/15986 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7339 event pairs, 167 based on Foata normal form. 1/1235 useless extension candidates. Maximal degree in co-relation 6602. Up to 975 conditions per place. [2024-06-27 22:33:24,601 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 163 selfloop transitions, 35 changer transitions 0/211 dead transitions. [2024-06-27 22:33:24,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 211 transitions, 2576 flow [2024-06-27 22:33:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 22:33:24,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-06-27 22:33:24,602 INFO L175 Difference]: Start difference. First operand has 132 places, 186 transitions, 2037 flow. Second operand 7 states and 134 transitions. [2024-06-27 22:33:24,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 211 transitions, 2576 flow [2024-06-27 22:33:24,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 211 transitions, 2414 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:24,629 INFO L231 Difference]: Finished difference. Result has 135 places, 192 transitions, 2061 flow [2024-06-27 22:33:24,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2061, PETRI_PLACES=135, PETRI_TRANSITIONS=192} [2024-06-27 22:33:24,629 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 94 predicate places. [2024-06-27 22:33:24,629 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 192 transitions, 2061 flow [2024-06-27 22:33:24,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:24,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:24,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:24,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:33:24,630 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:24,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:24,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1329016948, now seen corresponding path program 2 times [2024-06-27 22:33:24,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:24,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184907766] [2024-06-27 22:33:24,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:24,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:26,230 INFO 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 22:33:26,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:26,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184907766] [2024-06-27 22:33:26,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184907766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:26,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:26,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:26,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799728454] [2024-06-27 22:33:26,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:26,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:26,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:26,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:26,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:26,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 192 transitions, 2061 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:26,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:26,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:26,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:26,775 INFO L124 PetriNetUnfolderBase]: 733/1399 cut-off events. [2024-06-27 22:33:26,775 INFO L125 PetriNetUnfolderBase]: For 17770/17770 co-relation queries the response was YES. [2024-06-27 22:33:26,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7634 conditions, 1399 events. 733/1399 cut-off events. For 17770/17770 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7820 event pairs, 121 based on Foata normal form. 1/1349 useless extension candidates. Maximal degree in co-relation 7569. Up to 980 conditions per place. [2024-06-27 22:33:26,784 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 128 selfloop transitions, 85 changer transitions 0/221 dead transitions. [2024-06-27 22:33:26,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 221 transitions, 2721 flow [2024-06-27 22:33:26,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:26,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 22:33:26,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-06-27 22:33:26,786 INFO L175 Difference]: Start difference. First operand has 135 places, 192 transitions, 2061 flow. Second operand 8 states and 154 transitions. [2024-06-27 22:33:26,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 221 transitions, 2721 flow [2024-06-27 22:33:26,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 221 transitions, 2666 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 22:33:26,825 INFO L231 Difference]: Finished difference. Result has 142 places, 197 transitions, 2273 flow [2024-06-27 22:33:26,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2006, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2273, PETRI_PLACES=142, PETRI_TRANSITIONS=197} [2024-06-27 22:33:26,826 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-06-27 22:33:26,826 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 197 transitions, 2273 flow [2024-06-27 22:33:26,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:26,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:26,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:26,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:33:26,826 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:26,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1329009508, now seen corresponding path program 3 times [2024-06-27 22:33:26,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:26,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970660241] [2024-06-27 22:33:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:26,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:28,249 INFO 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 22:33:28,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:28,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970660241] [2024-06-27 22:33:28,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970660241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:28,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:28,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:28,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456716084] [2024-06-27 22:33:28,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:28,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:28,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:28,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:28,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:28,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:28,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 197 transitions, 2273 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:28,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:28,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:28,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:28,742 INFO L124 PetriNetUnfolderBase]: 731/1396 cut-off events. [2024-06-27 22:33:28,742 INFO L125 PetriNetUnfolderBase]: For 19064/19064 co-relation queries the response was YES. [2024-06-27 22:33:28,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7944 conditions, 1396 events. 731/1396 cut-off events. For 19064/19064 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7809 event pairs, 121 based on Foata normal form. 1/1346 useless extension candidates. Maximal degree in co-relation 7875. Up to 1031 conditions per place. [2024-06-27 22:33:28,751 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 133 selfloop transitions, 76 changer transitions 0/217 dead transitions. [2024-06-27 22:33:28,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 217 transitions, 2799 flow [2024-06-27 22:33:28,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:33:28,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-27 22:33:28,752 INFO L175 Difference]: Start difference. First operand has 142 places, 197 transitions, 2273 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:33:28,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 217 transitions, 2799 flow [2024-06-27 22:33:28,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 217 transitions, 2682 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:28,784 INFO L231 Difference]: Finished difference. Result has 146 places, 200 transitions, 2375 flow [2024-06-27 22:33:28,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2375, PETRI_PLACES=146, PETRI_TRANSITIONS=200} [2024-06-27 22:33:28,784 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 105 predicate places. [2024-06-27 22:33:28,785 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 200 transitions, 2375 flow [2024-06-27 22:33:28,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:28,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:28,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:28,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:33:28,785 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:28,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:28,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1329009291, now seen corresponding path program 3 times [2024-06-27 22:33:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:28,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138482160] [2024-06-27 22:33:28,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:28,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:29,843 INFO 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 22:33:29,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:29,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138482160] [2024-06-27 22:33:29,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138482160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:29,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:29,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:29,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611397258] [2024-06-27 22:33:29,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:29,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:29,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:29,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:29,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:29,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:29,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 200 transitions, 2375 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:29,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:29,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:29,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:30,515 INFO L124 PetriNetUnfolderBase]: 739/1408 cut-off events. [2024-06-27 22:33:30,515 INFO L125 PetriNetUnfolderBase]: For 20178/20178 co-relation queries the response was YES. [2024-06-27 22:33:30,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8183 conditions, 1408 events. 739/1408 cut-off events. For 20178/20178 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7853 event pairs, 121 based on Foata normal form. 1/1358 useless extension candidates. Maximal degree in co-relation 8112. Up to 1032 conditions per place. [2024-06-27 22:33:30,523 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 136 selfloop transitions, 76 changer transitions 0/220 dead transitions. [2024-06-27 22:33:30,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 220 transitions, 2907 flow [2024-06-27 22:33:30,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:30,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:33:30,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 22:33:30,525 INFO L175 Difference]: Start difference. First operand has 146 places, 200 transitions, 2375 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:33:30,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 220 transitions, 2907 flow [2024-06-27 22:33:30,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 220 transitions, 2726 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:30,567 INFO L231 Difference]: Finished difference. Result has 149 places, 203 transitions, 2413 flow [2024-06-27 22:33:30,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2413, PETRI_PLACES=149, PETRI_TRANSITIONS=203} [2024-06-27 22:33:30,568 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 108 predicate places. [2024-06-27 22:33:30,568 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 203 transitions, 2413 flow [2024-06-27 22:33:30,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:30,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:30,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:30,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:33:30,569 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:30,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:30,569 INFO L85 PathProgramCache]: Analyzing trace with hash -816538165, now seen corresponding path program 2 times [2024-06-27 22:33:30,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:30,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062125107] [2024-06-27 22:33:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:30,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:32,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:32,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062125107] [2024-06-27 22:33:32,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062125107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:32,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:32,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:32,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676672367] [2024-06-27 22:33:32,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:32,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:32,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:32,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:32,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:32,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:32,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 203 transitions, 2413 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:32,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:32,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:32,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:33,161 INFO L124 PetriNetUnfolderBase]: 781/1495 cut-off events. [2024-06-27 22:33:33,161 INFO L125 PetriNetUnfolderBase]: For 22984/22984 co-relation queries the response was YES. [2024-06-27 22:33:33,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8674 conditions, 1495 events. 781/1495 cut-off events. For 22984/22984 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8565 event pairs, 147 based on Foata normal form. 2/1446 useless extension candidates. Maximal degree in co-relation 8602. Up to 1169 conditions per place. [2024-06-27 22:33:33,171 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 205 selfloop transitions, 27 changer transitions 0/240 dead transitions. [2024-06-27 22:33:33,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 240 transitions, 3112 flow [2024-06-27 22:33:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 22:33:33,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 22:33:33,172 INFO L175 Difference]: Start difference. First operand has 149 places, 203 transitions, 2413 flow. Second operand 9 states and 155 transitions. [2024-06-27 22:33:33,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 240 transitions, 3112 flow [2024-06-27 22:33:33,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 240 transitions, 2911 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:33,216 INFO L231 Difference]: Finished difference. Result has 153 places, 215 transitions, 2414 flow [2024-06-27 22:33:33,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2414, PETRI_PLACES=153, PETRI_TRANSITIONS=215} [2024-06-27 22:33:33,217 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 112 predicate places. [2024-06-27 22:33:33,217 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 215 transitions, 2414 flow [2024-06-27 22:33:33,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:33,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:33,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:33,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:33:33,218 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:33,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:33,218 INFO L85 PathProgramCache]: Analyzing trace with hash -816864595, now seen corresponding path program 3 times [2024-06-27 22:33:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:33,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378085624] [2024-06-27 22:33:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:33,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:35,067 INFO 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 22:33:35,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:35,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378085624] [2024-06-27 22:33:35,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378085624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:35,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:35,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:35,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603483924] [2024-06-27 22:33:35,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:35,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:35,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:35,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:35,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:35,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:33:35,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 215 transitions, 2414 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:35,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:35,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:33:35,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:35,581 INFO L124 PetriNetUnfolderBase]: 747/1488 cut-off events. [2024-06-27 22:33:35,581 INFO L125 PetriNetUnfolderBase]: For 23297/23297 co-relation queries the response was YES. [2024-06-27 22:33:35,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8447 conditions, 1488 events. 747/1488 cut-off events. For 23297/23297 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8974 event pairs, 130 based on Foata normal form. 1/1426 useless extension candidates. Maximal degree in co-relation 8372. Up to 1040 conditions per place. [2024-06-27 22:33:35,596 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 176 selfloop transitions, 57 changer transitions 0/247 dead transitions. [2024-06-27 22:33:35,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 247 transitions, 3210 flow [2024-06-27 22:33:35,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:33:35,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:33:35,598 INFO L175 Difference]: Start difference. First operand has 153 places, 215 transitions, 2414 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:33:35,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 247 transitions, 3210 flow [2024-06-27 22:33:35,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 247 transitions, 3153 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:35,645 INFO L231 Difference]: Finished difference. Result has 159 places, 227 transitions, 2681 flow [2024-06-27 22:33:35,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2681, PETRI_PLACES=159, PETRI_TRANSITIONS=227} [2024-06-27 22:33:35,645 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 118 predicate places. [2024-06-27 22:33:35,645 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 227 transitions, 2681 flow [2024-06-27 22:33:35,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:35,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:35,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:35,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:33:35,646 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:35,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:35,646 INFO L85 PathProgramCache]: Analyzing trace with hash -816864874, now seen corresponding path program 4 times [2024-06-27 22:33:35,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:35,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491045574] [2024-06-27 22:33:35,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:35,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:37,855 INFO 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 22:33:37,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:37,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491045574] [2024-06-27 22:33:37,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491045574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:37,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:37,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:37,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73014867] [2024-06-27 22:33:37,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:37,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:37,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:37,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:37,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:37,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:37,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 227 transitions, 2681 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:37,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:37,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:37,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:38,346 INFO L124 PetriNetUnfolderBase]: 822/1576 cut-off events. [2024-06-27 22:33:38,346 INFO L125 PetriNetUnfolderBase]: For 26163/26163 co-relation queries the response was YES. [2024-06-27 22:33:38,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9653 conditions, 1576 events. 822/1576 cut-off events. For 26163/26163 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9179 event pairs, 135 based on Foata normal form. 1/1517 useless extension candidates. Maximal degree in co-relation 9574. Up to 981 conditions per place. [2024-06-27 22:33:38,358 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 120 selfloop transitions, 127 changer transitions 0/255 dead transitions. [2024-06-27 22:33:38,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 255 transitions, 3523 flow [2024-06-27 22:33:38,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:38,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-27 22:33:38,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:33:38,360 INFO L175 Difference]: Start difference. First operand has 159 places, 227 transitions, 2681 flow. Second operand 8 states and 152 transitions. [2024-06-27 22:33:38,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 255 transitions, 3523 flow [2024-06-27 22:33:38,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 255 transitions, 3450 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:38,416 INFO L231 Difference]: Finished difference. Result has 165 places, 236 transitions, 3078 flow [2024-06-27 22:33:38,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3078, PETRI_PLACES=165, PETRI_TRANSITIONS=236} [2024-06-27 22:33:38,417 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 124 predicate places. [2024-06-27 22:33:38,417 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 236 transitions, 3078 flow [2024-06-27 22:33:38,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:38,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:38,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:38,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:33:38,418 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:38,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:38,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1702990266, now seen corresponding path program 5 times [2024-06-27 22:33:38,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:38,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964119472] [2024-06-27 22:33:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:38,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:40,012 INFO 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 22:33:40,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:40,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964119472] [2024-06-27 22:33:40,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964119472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:40,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:40,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:40,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332671014] [2024-06-27 22:33:40,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:40,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:40,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:40,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:40,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:40,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 236 transitions, 3078 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:40,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:40,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:40,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:40,655 INFO L124 PetriNetUnfolderBase]: 846/1617 cut-off events. [2024-06-27 22:33:40,656 INFO L125 PetriNetUnfolderBase]: For 30353/30353 co-relation queries the response was YES. [2024-06-27 22:33:40,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10552 conditions, 1617 events. 846/1617 cut-off events. For 30353/30353 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9412 event pairs, 140 based on Foata normal form. 1/1556 useless extension candidates. Maximal degree in co-relation 10470. Up to 1122 conditions per place. [2024-06-27 22:33:40,668 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 152 selfloop transitions, 108 changer transitions 0/268 dead transitions. [2024-06-27 22:33:40,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 268 transitions, 4026 flow [2024-06-27 22:33:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:40,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 22:33:40,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168918918918919 [2024-06-27 22:33:40,669 INFO L175 Difference]: Start difference. First operand has 165 places, 236 transitions, 3078 flow. Second operand 8 states and 153 transitions. [2024-06-27 22:33:40,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 268 transitions, 4026 flow [2024-06-27 22:33:40,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 268 transitions, 3804 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:40,741 INFO L231 Difference]: Finished difference. Result has 169 places, 244 transitions, 3264 flow [2024-06-27 22:33:40,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2884, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3264, PETRI_PLACES=169, PETRI_TRANSITIONS=244} [2024-06-27 22:33:40,742 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 128 predicate places. [2024-06-27 22:33:40,742 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 244 transitions, 3264 flow [2024-06-27 22:33:40,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:40,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:40,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:40,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:33:40,742 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:40,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:40,743 INFO L85 PathProgramCache]: Analyzing trace with hash -826069084, now seen corresponding path program 6 times [2024-06-27 22:33:40,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:40,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064555157] [2024-06-27 22:33:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:40,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:42,072 INFO 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 22:33:42,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:42,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064555157] [2024-06-27 22:33:42,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064555157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:42,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:42,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:42,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034748606] [2024-06-27 22:33:42,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:42,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:42,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:42,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:42,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:42,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:42,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 244 transitions, 3264 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:42,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:42,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:42,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:42,578 INFO L124 PetriNetUnfolderBase]: 844/1618 cut-off events. [2024-06-27 22:33:42,578 INFO L125 PetriNetUnfolderBase]: For 30484/30484 co-relation queries the response was YES. [2024-06-27 22:33:42,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10687 conditions, 1618 events. 844/1618 cut-off events. For 30484/30484 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9460 event pairs, 140 based on Foata normal form. 1/1557 useless extension candidates. Maximal degree in co-relation 10603. Up to 1142 conditions per place. [2024-06-27 22:33:42,590 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 155 selfloop transitions, 100 changer transitions 0/263 dead transitions. [2024-06-27 22:33:42,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 263 transitions, 3927 flow [2024-06-27 22:33:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:42,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:33:42,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:33:42,628 INFO L175 Difference]: Start difference. First operand has 169 places, 244 transitions, 3264 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:33:42,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 263 transitions, 3927 flow [2024-06-27 22:33:42,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 263 transitions, 3732 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:42,698 INFO L231 Difference]: Finished difference. Result has 173 places, 245 transitions, 3296 flow [2024-06-27 22:33:42,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3069, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3296, PETRI_PLACES=173, PETRI_TRANSITIONS=245} [2024-06-27 22:33:42,698 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-06-27 22:33:42,698 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 245 transitions, 3296 flow [2024-06-27 22:33:42,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:42,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:42,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:42,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:33:42,699 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:42,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:42,699 INFO L85 PathProgramCache]: Analyzing trace with hash -826061365, now seen corresponding path program 4 times [2024-06-27 22:33:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:42,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113937138] [2024-06-27 22:33:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:44,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:44,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113937138] [2024-06-27 22:33:44,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113937138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:44,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:44,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:44,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201924484] [2024-06-27 22:33:44,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:44,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:44,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:44,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:44,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:44,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:33:44,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 245 transitions, 3296 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:44,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:44,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:33:44,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:44,499 INFO L124 PetriNetUnfolderBase]: 800/1586 cut-off events. [2024-06-27 22:33:44,499 INFO L125 PetriNetUnfolderBase]: For 31008/31008 co-relation queries the response was YES. [2024-06-27 22:33:44,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10223 conditions, 1586 events. 800/1586 cut-off events. For 31008/31008 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9663 event pairs, 137 based on Foata normal form. 2/1514 useless extension candidates. Maximal degree in co-relation 10138. Up to 1197 conditions per place. [2024-06-27 22:33:44,511 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 220 selfloop transitions, 38 changer transitions 0/273 dead transitions. [2024-06-27 22:33:44,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 273 transitions, 4047 flow [2024-06-27 22:33:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-27 22:33:44,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444015444015444 [2024-06-27 22:33:44,512 INFO L175 Difference]: Start difference. First operand has 173 places, 245 transitions, 3296 flow. Second operand 7 states and 141 transitions. [2024-06-27 22:33:44,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 273 transitions, 4047 flow [2024-06-27 22:33:44,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 273 transitions, 3819 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:44,583 INFO L231 Difference]: Finished difference. Result has 176 places, 253 transitions, 3330 flow [2024-06-27 22:33:44,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3068, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3330, PETRI_PLACES=176, PETRI_TRANSITIONS=253} [2024-06-27 22:33:44,583 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 135 predicate places. [2024-06-27 22:33:44,583 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 253 transitions, 3330 flow [2024-06-27 22:33:44,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:44,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:44,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:44,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:33:44,584 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:44,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:44,584 INFO L85 PathProgramCache]: Analyzing trace with hash -826069301, now seen corresponding path program 4 times [2024-06-27 22:33:44,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:44,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233841849] [2024-06-27 22:33:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:44,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:45,659 INFO 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 22:33:45,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:45,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233841849] [2024-06-27 22:33:45,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233841849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:45,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:45,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:45,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636083170] [2024-06-27 22:33:45,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:45,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:45,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:45,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:45,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:45,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:45,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 253 transitions, 3330 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:45,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:45,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:45,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:46,285 INFO L124 PetriNetUnfolderBase]: 873/1676 cut-off events. [2024-06-27 22:33:46,285 INFO L125 PetriNetUnfolderBase]: For 32802/32802 co-relation queries the response was YES. [2024-06-27 22:33:46,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11234 conditions, 1676 events. 873/1676 cut-off events. For 32802/32802 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9987 event pairs, 141 based on Foata normal form. 1/1613 useless extension candidates. Maximal degree in co-relation 11146. Up to 1150 conditions per place. [2024-06-27 22:33:46,297 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 169 selfloop transitions, 100 changer transitions 0/277 dead transitions. [2024-06-27 22:33:46,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 277 transitions, 4138 flow [2024-06-27 22:33:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:46,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:33:46,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 22:33:46,299 INFO L175 Difference]: Start difference. First operand has 176 places, 253 transitions, 3330 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:33:46,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 277 transitions, 4138 flow [2024-06-27 22:33:46,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 277 transitions, 4021 flow, removed 52 selfloop flow, removed 1 redundant places. [2024-06-27 22:33:46,390 INFO L231 Difference]: Finished difference. Result has 184 places, 259 transitions, 3557 flow [2024-06-27 22:33:46,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3557, PETRI_PLACES=184, PETRI_TRANSITIONS=259} [2024-06-27 22:33:46,391 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-06-27 22:33:46,391 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 259 transitions, 3557 flow [2024-06-27 22:33:46,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:46,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:46,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:46,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:33:46,392 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:46,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:46,392 INFO L85 PathProgramCache]: Analyzing trace with hash -711493459, now seen corresponding path program 5 times [2024-06-27 22:33:46,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:46,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531532560] [2024-06-27 22:33:46,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:46,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:47,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:47,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531532560] [2024-06-27 22:33:47,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531532560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:47,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:47,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:47,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140843197] [2024-06-27 22:33:47,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:47,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:47,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:47,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:47,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:47,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:47,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 259 transitions, 3557 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:47,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:47,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:47,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:47,900 INFO L124 PetriNetUnfolderBase]: 906/1737 cut-off events. [2024-06-27 22:33:47,900 INFO L125 PetriNetUnfolderBase]: For 35501/35501 co-relation queries the response was YES. [2024-06-27 22:33:47,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 1737 events. 906/1737 cut-off events. For 35501/35501 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10371 event pairs, 130 based on Foata normal form. 1/1680 useless extension candidates. Maximal degree in co-relation 11822. Up to 1339 conditions per place. [2024-06-27 22:33:47,913 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 226 selfloop transitions, 70 changer transitions 0/304 dead transitions. [2024-06-27 22:33:47,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 304 transitions, 4563 flow [2024-06-27 22:33:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:47,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:47,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:33:47,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:33:47,915 INFO L175 Difference]: Start difference. First operand has 184 places, 259 transitions, 3557 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:33:47,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 304 transitions, 4563 flow [2024-06-27 22:33:47,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 304 transitions, 4435 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:47,997 INFO L231 Difference]: Finished difference. Result has 189 places, 278 transitions, 3949 flow [2024-06-27 22:33:47,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3438, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3949, PETRI_PLACES=189, PETRI_TRANSITIONS=278} [2024-06-27 22:33:47,997 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 148 predicate places. [2024-06-27 22:33:47,997 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 278 transitions, 3949 flow [2024-06-27 22:33:47,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:47,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:47,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:47,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:33:47,998 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:47,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:47,998 INFO L85 PathProgramCache]: Analyzing trace with hash -346181237, now seen corresponding path program 6 times [2024-06-27 22:33:47,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:47,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723056181] [2024-06-27 22:33:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:47,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:49,013 INFO 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 22:33:49,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:49,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723056181] [2024-06-27 22:33:49,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723056181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:49,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:49,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:49,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337611776] [2024-06-27 22:33:49,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:49,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:49,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:49,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:49,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:49,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:49,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 278 transitions, 3949 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:49,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:49,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:49,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:49,682 INFO L124 PetriNetUnfolderBase]: 920/1760 cut-off events. [2024-06-27 22:33:49,683 INFO L125 PetriNetUnfolderBase]: For 35764/35764 co-relation queries the response was YES. [2024-06-27 22:33:49,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12350 conditions, 1760 events. 920/1760 cut-off events. For 35764/35764 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10517 event pairs, 133 based on Foata normal form. 1/1703 useless extension candidates. Maximal degree in co-relation 12256. Up to 1355 conditions per place. [2024-06-27 22:33:49,696 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 228 selfloop transitions, 79 changer transitions 0/315 dead transitions. [2024-06-27 22:33:49,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 315 transitions, 4909 flow [2024-06-27 22:33:49,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:49,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:33:49,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:33:49,698 INFO L175 Difference]: Start difference. First operand has 189 places, 278 transitions, 3949 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:33:49,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 315 transitions, 4909 flow [2024-06-27 22:33:49,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 315 transitions, 4684 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:49,784 INFO L231 Difference]: Finished difference. Result has 192 places, 291 transitions, 4196 flow [2024-06-27 22:33:49,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4196, PETRI_PLACES=192, PETRI_TRANSITIONS=291} [2024-06-27 22:33:49,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 151 predicate places. [2024-06-27 22:33:49,785 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 291 transitions, 4196 flow [2024-06-27 22:33:49,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:49,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:49,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:49,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:33:49,785 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:49,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:49,785 INFO L85 PathProgramCache]: Analyzing trace with hash 833049154, now seen corresponding path program 7 times [2024-06-27 22:33:49,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:49,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346960485] [2024-06-27 22:33:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:49,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:51,004 INFO 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 22:33:51,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:51,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346960485] [2024-06-27 22:33:51,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346960485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:51,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:51,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:51,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154294334] [2024-06-27 22:33:51,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:51,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:51,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:51,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:51,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:51,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:51,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 291 transitions, 4196 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:51,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:51,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:51,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:51,613 INFO L124 PetriNetUnfolderBase]: 944/1791 cut-off events. [2024-06-27 22:33:51,613 INFO L125 PetriNetUnfolderBase]: For 37511/37511 co-relation queries the response was YES. [2024-06-27 22:33:51,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12673 conditions, 1791 events. 944/1791 cut-off events. For 37511/37511 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10641 event pairs, 129 based on Foata normal form. 2/1733 useless extension candidates. Maximal degree in co-relation 12579. Up to 1331 conditions per place. [2024-06-27 22:33:51,628 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 212 selfloop transitions, 103 changer transitions 0/323 dead transitions. [2024-06-27 22:33:51,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 323 transitions, 5035 flow [2024-06-27 22:33:51,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:51,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:33:51,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 22:33:51,631 INFO L175 Difference]: Start difference. First operand has 192 places, 291 transitions, 4196 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:33:51,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 323 transitions, 5035 flow [2024-06-27 22:33:51,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 323 transitions, 4868 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:51,737 INFO L231 Difference]: Finished difference. Result has 196 places, 299 transitions, 4384 flow [2024-06-27 22:33:51,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4029, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4384, PETRI_PLACES=196, PETRI_TRANSITIONS=299} [2024-06-27 22:33:51,738 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-06-27 22:33:51,738 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 299 transitions, 4384 flow [2024-06-27 22:33:51,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:51,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:51,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:51,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:33:51,739 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:51,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:51,739 INFO L85 PathProgramCache]: Analyzing trace with hash 833057307, now seen corresponding path program 7 times [2024-06-27 22:33:51,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:51,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335762307] [2024-06-27 22:33:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:51,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:52,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:52,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335762307] [2024-06-27 22:33:52,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335762307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:52,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:52,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:52,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391214630] [2024-06-27 22:33:52,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:52,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:52,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:52,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:52,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:53,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:53,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 299 transitions, 4384 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:53,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:53,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:53,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:53,685 INFO L124 PetriNetUnfolderBase]: 956/1819 cut-off events. [2024-06-27 22:33:53,685 INFO L125 PetriNetUnfolderBase]: For 39103/39103 co-relation queries the response was YES. [2024-06-27 22:33:53,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12936 conditions, 1819 events. 956/1819 cut-off events. For 39103/39103 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10890 event pairs, 129 based on Foata normal form. 1/1760 useless extension candidates. Maximal degree in co-relation 12841. Up to 1371 conditions per place. [2024-06-27 22:33:53,699 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 220 selfloop transitions, 101 changer transitions 0/329 dead transitions. [2024-06-27 22:33:53,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 329 transitions, 5206 flow [2024-06-27 22:33:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:53,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:33:53,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:33:53,701 INFO L175 Difference]: Start difference. First operand has 196 places, 299 transitions, 4384 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:33:53,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 329 transitions, 5206 flow [2024-06-27 22:33:53,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 329 transitions, 4976 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:53,801 INFO L231 Difference]: Finished difference. Result has 198 places, 305 transitions, 4463 flow [2024-06-27 22:33:53,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4463, PETRI_PLACES=198, PETRI_TRANSITIONS=305} [2024-06-27 22:33:53,802 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-27 22:33:53,802 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 305 transitions, 4463 flow [2024-06-27 22:33:53,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:53,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:53,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:53,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:33:53,802 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:53,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:53,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1221294154, now seen corresponding path program 8 times [2024-06-27 22:33:53,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:53,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141437377] [2024-06-27 22:33:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:53,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:55,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141437377] [2024-06-27 22:33:55,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141437377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:55,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:55,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:55,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403929616] [2024-06-27 22:33:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:55,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:55,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:55,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:55,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:55,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:55,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 305 transitions, 4463 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:55,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:55,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:55,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:55,624 INFO L124 PetriNetUnfolderBase]: 978/1849 cut-off events. [2024-06-27 22:33:55,624 INFO L125 PetriNetUnfolderBase]: For 40508/40508 co-relation queries the response was YES. [2024-06-27 22:33:55,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13120 conditions, 1849 events. 978/1849 cut-off events. For 40508/40508 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11050 event pairs, 140 based on Foata normal form. 2/1792 useless extension candidates. Maximal degree in co-relation 13024. Up to 1401 conditions per place. [2024-06-27 22:33:55,640 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 239 selfloop transitions, 93 changer transitions 0/340 dead transitions. [2024-06-27 22:33:55,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 340 transitions, 5391 flow [2024-06-27 22:33:55,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:55,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:33:55,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236486486486487 [2024-06-27 22:33:55,642 INFO L175 Difference]: Start difference. First operand has 198 places, 305 transitions, 4463 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:33:55,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 340 transitions, 5391 flow [2024-06-27 22:33:55,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 340 transitions, 5150 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:55,752 INFO L231 Difference]: Finished difference. Result has 199 places, 316 transitions, 4604 flow [2024-06-27 22:33:55,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4222, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4604, PETRI_PLACES=199, PETRI_TRANSITIONS=316} [2024-06-27 22:33:55,753 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 158 predicate places. [2024-06-27 22:33:55,753 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 316 transitions, 4604 flow [2024-06-27 22:33:55,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:55,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:55,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:55,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:33:55,754 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:55,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:55,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1221293937, now seen corresponding path program 8 times [2024-06-27 22:33:55,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:55,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93706817] [2024-06-27 22:33:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:55,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:56,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:56,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93706817] [2024-06-27 22:33:56,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93706817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:56,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:56,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:56,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694349268] [2024-06-27 22:33:56,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:56,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:56,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:56,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:56,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:56,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:56,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 316 transitions, 4604 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:56,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:56,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:56,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:57,722 INFO L124 PetriNetUnfolderBase]: 994/1882 cut-off events. [2024-06-27 22:33:57,722 INFO L125 PetriNetUnfolderBase]: For 41552/41552 co-relation queries the response was YES. [2024-06-27 22:33:57,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13359 conditions, 1882 events. 994/1882 cut-off events. For 41552/41552 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11294 event pairs, 141 based on Foata normal form. 1/1824 useless extension candidates. Maximal degree in co-relation 13263. Up to 1440 conditions per place. [2024-06-27 22:33:57,737 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 250 selfloop transitions, 91 changer transitions 0/349 dead transitions. [2024-06-27 22:33:57,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 349 transitions, 5516 flow [2024-06-27 22:33:57,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:33:57,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 22:33:57,738 INFO L175 Difference]: Start difference. First operand has 199 places, 316 transitions, 4604 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:33:57,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 349 transitions, 5516 flow [2024-06-27 22:33:57,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 349 transitions, 5306 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:57,850 INFO L231 Difference]: Finished difference. Result has 202 places, 325 transitions, 4728 flow [2024-06-27 22:33:57,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4394, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4728, PETRI_PLACES=202, PETRI_TRANSITIONS=325} [2024-06-27 22:33:57,850 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-27 22:33:57,851 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 325 transitions, 4728 flow [2024-06-27 22:33:57,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:57,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:57,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:57,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:33:57,851 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:57,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:57,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1225964397, now seen corresponding path program 9 times [2024-06-27 22:33:57,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:57,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767531739] [2024-06-27 22:33:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:57,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:59,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:59,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767531739] [2024-06-27 22:33:59,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767531739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:59,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:59,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:59,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59001604] [2024-06-27 22:33:59,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:59,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:59,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:59,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:59,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:59,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:59,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 325 transitions, 4728 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:59,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:59,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:59,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:59,922 INFO L124 PetriNetUnfolderBase]: 999/1891 cut-off events. [2024-06-27 22:33:59,923 INFO L125 PetriNetUnfolderBase]: For 41713/41713 co-relation queries the response was YES. [2024-06-27 22:33:59,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13337 conditions, 1891 events. 999/1891 cut-off events. For 41713/41713 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11363 event pairs, 137 based on Foata normal form. 1/1830 useless extension candidates. Maximal degree in co-relation 13239. Up to 1395 conditions per place. [2024-06-27 22:33:59,945 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 228 selfloop transitions, 118 changer transitions 0/354 dead transitions. [2024-06-27 22:33:59,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 354 transitions, 5581 flow [2024-06-27 22:33:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:59,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:59,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 22:33:59,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-06-27 22:33:59,946 INFO L175 Difference]: Start difference. First operand has 202 places, 325 transitions, 4728 flow. Second operand 8 states and 154 transitions. [2024-06-27 22:33:59,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 354 transitions, 5581 flow [2024-06-27 22:34:00,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 354 transitions, 5355 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:00,083 INFO L231 Difference]: Finished difference. Result has 203 places, 329 transitions, 4806 flow [2024-06-27 22:34:00,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4502, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4806, PETRI_PLACES=203, PETRI_TRANSITIONS=329} [2024-06-27 22:34:00,084 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-27 22:34:00,084 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 329 transitions, 4806 flow [2024-06-27 22:34:00,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:00,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:00,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:00,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:34:00,085 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:00,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:00,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1225964614, now seen corresponding path program 9 times [2024-06-27 22:34:00,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:00,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695221926] [2024-06-27 22:34:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:00,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:01,322 INFO 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 22:34:01,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:01,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695221926] [2024-06-27 22:34:01,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695221926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:01,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:01,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:34:01,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588594178] [2024-06-27 22:34:01,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:01,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:34:01,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:01,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:34:01,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:34:01,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:34:01,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 329 transitions, 4806 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:01,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:01,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:34:01,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:01,982 INFO L124 PetriNetUnfolderBase]: 1011/1907 cut-off events. [2024-06-27 22:34:01,982 INFO L125 PetriNetUnfolderBase]: For 43167/43167 co-relation queries the response was YES. [2024-06-27 22:34:01,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13615 conditions, 1907 events. 1011/1907 cut-off events. For 43167/43167 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11433 event pairs, 138 based on Foata normal form. 1/1846 useless extension candidates. Maximal degree in co-relation 13517. Up to 1416 conditions per place. [2024-06-27 22:34:01,997 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 232 selfloop transitions, 118 changer transitions 0/358 dead transitions. [2024-06-27 22:34:01,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 358 transitions, 5709 flow [2024-06-27 22:34:01,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:01,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:01,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 22:34:01,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168918918918919 [2024-06-27 22:34:01,998 INFO L175 Difference]: Start difference. First operand has 203 places, 329 transitions, 4806 flow. Second operand 8 states and 153 transitions. [2024-06-27 22:34:01,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 358 transitions, 5709 flow [2024-06-27 22:34:02,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 358 transitions, 5371 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:02,157 INFO L231 Difference]: Finished difference. Result has 204 places, 335 transitions, 4826 flow [2024-06-27 22:34:02,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4468, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4826, PETRI_PLACES=204, PETRI_TRANSITIONS=335} [2024-06-27 22:34:02,157 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 163 predicate places. [2024-06-27 22:34:02,158 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 335 transitions, 4826 flow [2024-06-27 22:34:02,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:02,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:02,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:02,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:34:02,158 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:02,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:02,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1586145244, now seen corresponding path program 10 times [2024-06-27 22:34:02,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:02,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496124223] [2024-06-27 22:34:02,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:02,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:03,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:03,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496124223] [2024-06-27 22:34:03,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496124223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:03,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:03,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:34:03,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587969969] [2024-06-27 22:34:03,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:03,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:34:03,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:03,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:34:03,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:34:03,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:34:03,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 335 transitions, 4826 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:03,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:03,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:34:03,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:04,417 INFO L124 PetriNetUnfolderBase]: 1013/1910 cut-off events. [2024-06-27 22:34:04,417 INFO L125 PetriNetUnfolderBase]: For 42529/42529 co-relation queries the response was YES. [2024-06-27 22:34:04,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13467 conditions, 1910 events. 1013/1910 cut-off events. For 42529/42529 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11483 event pairs, 137 based on Foata normal form. 1/1849 useless extension candidates. Maximal degree in co-relation 13369. Up to 1343 conditions per place. [2024-06-27 22:34:04,434 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 207 selfloop transitions, 146 changer transitions 0/361 dead transitions. [2024-06-27 22:34:04,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 361 transitions, 5686 flow [2024-06-27 22:34:04,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:34:04,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236486486486487 [2024-06-27 22:34:04,436 INFO L175 Difference]: Start difference. First operand has 204 places, 335 transitions, 4826 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:34:04,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 361 transitions, 5686 flow [2024-06-27 22:34:04,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 361 transitions, 5380 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:04,563 INFO L231 Difference]: Finished difference. Result has 206 places, 338 transitions, 4878 flow [2024-06-27 22:34:04,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4528, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4878, PETRI_PLACES=206, PETRI_TRANSITIONS=338} [2024-06-27 22:34:04,564 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-27 22:34:04,564 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 338 transitions, 4878 flow [2024-06-27 22:34:04,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:04,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:04,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:04,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:34:04,565 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:04,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:04,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1712525649, now seen corresponding path program 1 times [2024-06-27 22:34:04,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:04,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129849692] [2024-06-27 22:34:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:04,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:06,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:06,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129849692] [2024-06-27 22:34:06,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129849692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:06,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:06,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:06,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792100897] [2024-06-27 22:34:06,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:06,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:06,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:06,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:06,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:34:06,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 338 transitions, 4878 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:06,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:06,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:34:06,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:07,594 INFO L124 PetriNetUnfolderBase]: 956/1848 cut-off events. [2024-06-27 22:34:07,594 INFO L125 PetriNetUnfolderBase]: For 42898/42905 co-relation queries the response was YES. [2024-06-27 22:34:07,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12881 conditions, 1848 events. 956/1848 cut-off events. For 42898/42905 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11375 event pairs, 196 based on Foata normal form. 7/1792 useless extension candidates. Maximal degree in co-relation 12782. Up to 1389 conditions per place. [2024-06-27 22:34:07,615 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 303 selfloop transitions, 21 changer transitions 0/363 dead transitions. [2024-06-27 22:34:07,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 363 transitions, 5688 flow [2024-06-27 22:34:07,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:07,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:07,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:34:07,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:34:07,617 INFO L175 Difference]: Start difference. First operand has 206 places, 338 transitions, 4878 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:34:07,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 363 transitions, 5688 flow [2024-06-27 22:34:07,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 363 transitions, 5347 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:07,794 INFO L231 Difference]: Finished difference. Result has 210 places, 339 transitions, 4601 flow [2024-06-27 22:34:07,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4537, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4601, PETRI_PLACES=210, PETRI_TRANSITIONS=339} [2024-06-27 22:34:07,795 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 169 predicate places. [2024-06-27 22:34:07,795 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 339 transitions, 4601 flow [2024-06-27 22:34:07,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:07,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:07,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:07,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:34:07,796 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:07,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:07,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1895160807, now seen corresponding path program 1 times [2024-06-27 22:34:07,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:07,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788085007] [2024-06-27 22:34:07,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:07,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:09,469 INFO 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 22:34:09,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:09,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788085007] [2024-06-27 22:34:09,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788085007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:09,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:09,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:09,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945906751] [2024-06-27 22:34:09,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:09,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:09,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:09,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:09,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:09,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:34:09,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 339 transitions, 4601 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:09,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:09,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:34:09,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:10,119 INFO L124 PetriNetUnfolderBase]: 987/1917 cut-off events. [2024-06-27 22:34:10,119 INFO L125 PetriNetUnfolderBase]: For 46556/46556 co-relation queries the response was YES. [2024-06-27 22:34:10,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12812 conditions, 1917 events. 987/1917 cut-off events. For 46556/46556 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12084 event pairs, 114 based on Foata normal form. 4/1847 useless extension candidates. Maximal degree in co-relation 12711. Up to 1216 conditions per place. [2024-06-27 22:34:10,137 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 212 selfloop transitions, 143 changer transitions 0/371 dead transitions. [2024-06-27 22:34:10,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 371 transitions, 5649 flow [2024-06-27 22:34:10,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:10,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 22:34:10,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5337837837837838 [2024-06-27 22:34:10,139 INFO L175 Difference]: Start difference. First operand has 210 places, 339 transitions, 4601 flow. Second operand 8 states and 158 transitions. [2024-06-27 22:34:10,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 371 transitions, 5649 flow [2024-06-27 22:34:10,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 371 transitions, 5595 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:10,298 INFO L231 Difference]: Finished difference. Result has 211 places, 347 transitions, 5033 flow [2024-06-27 22:34:10,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4547, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5033, PETRI_PLACES=211, PETRI_TRANSITIONS=347} [2024-06-27 22:34:10,298 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 170 predicate places. [2024-06-27 22:34:10,298 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 347 transitions, 5033 flow [2024-06-27 22:34:10,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:10,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:10,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:10,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:34:10,299 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:10,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:10,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1590679327, now seen corresponding path program 1 times [2024-06-27 22:34:10,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:10,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088657872] [2024-06-27 22:34:10,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:10,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:12,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:12,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088657872] [2024-06-27 22:34:12,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088657872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:12,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:12,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:12,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307042557] [2024-06-27 22:34:12,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:12,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:12,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:12,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:12,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:12,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:34:12,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 347 transitions, 5033 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:34:12,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:12,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:34:12,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:13,487 INFO L124 PetriNetUnfolderBase]: 1106/2099 cut-off events. [2024-06-27 22:34:13,488 INFO L125 PetriNetUnfolderBase]: For 50181/50181 co-relation queries the response was YES. [2024-06-27 22:34:13,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15057 conditions, 2099 events. 1106/2099 cut-off events. For 50181/50181 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13046 event pairs, 129 based on Foata normal form. 1/2030 useless extension candidates. Maximal degree in co-relation 14955. Up to 1550 conditions per place. [2024-06-27 22:34:13,507 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 264 selfloop transitions, 106 changer transitions 0/378 dead transitions. [2024-06-27 22:34:13,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 378 transitions, 6158 flow [2024-06-27 22:34:13,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:34:13,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-27 22:34:13,509 INFO L175 Difference]: Start difference. First operand has 211 places, 347 transitions, 5033 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:34:13,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 378 transitions, 6158 flow [2024-06-27 22:34:13,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 378 transitions, 5978 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 22:34:13,686 INFO L231 Difference]: Finished difference. Result has 218 places, 354 transitions, 5288 flow [2024-06-27 22:34:13,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4861, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5288, PETRI_PLACES=218, PETRI_TRANSITIONS=354} [2024-06-27 22:34:13,686 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-06-27 22:34:13,686 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 354 transitions, 5288 flow [2024-06-27 22:34:13,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:34:13,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:13,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:13,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:34:13,687 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:13,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:13,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1590685837, now seen corresponding path program 2 times [2024-06-27 22:34:13,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:13,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709400471] [2024-06-27 22:34:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:13,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:15,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:15,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:15,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709400471] [2024-06-27 22:34:15,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709400471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:15,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:15,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:15,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479890465] [2024-06-27 22:34:15,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:15,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:15,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:15,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:15,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:15,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:34:15,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 354 transitions, 5288 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:15,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:15,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:34:15,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:16,066 INFO L124 PetriNetUnfolderBase]: 1104/2088 cut-off events. [2024-06-27 22:34:16,066 INFO L125 PetriNetUnfolderBase]: For 50261/50261 co-relation queries the response was YES. [2024-06-27 22:34:16,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15168 conditions, 2088 events. 1104/2088 cut-off events. For 50261/50261 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12910 event pairs, 138 based on Foata normal form. 1/2019 useless extension candidates. Maximal degree in co-relation 15062. Up to 1600 conditions per place. [2024-06-27 22:34:16,087 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 276 selfloop transitions, 92 changer transitions 0/376 dead transitions. [2024-06-27 22:34:16,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 376 transitions, 6136 flow [2024-06-27 22:34:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:34:16,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:34:16,088 INFO L175 Difference]: Start difference. First operand has 218 places, 354 transitions, 5288 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:34:16,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 376 transitions, 6136 flow [2024-06-27 22:34:16,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 376 transitions, 5928 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:16,276 INFO L231 Difference]: Finished difference. Result has 222 places, 354 transitions, 5271 flow [2024-06-27 22:34:16,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5080, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5271, PETRI_PLACES=222, PETRI_TRANSITIONS=354} [2024-06-27 22:34:16,276 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-06-27 22:34:16,276 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 354 transitions, 5271 flow [2024-06-27 22:34:16,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:16,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:16,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:16,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:34:16,277 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:16,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:16,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1750137537, now seen corresponding path program 2 times [2024-06-27 22:34:16,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:16,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879546082] [2024-06-27 22:34:16,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:16,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:18,052 INFO 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 22:34:18,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:18,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879546082] [2024-06-27 22:34:18,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879546082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:18,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:18,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:18,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044458898] [2024-06-27 22:34:18,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:18,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:18,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:18,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:18,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:18,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:34:18,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 354 transitions, 5271 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:18,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:18,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:34:18,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:18,748 INFO L124 PetriNetUnfolderBase]: 1067/2062 cut-off events. [2024-06-27 22:34:18,748 INFO L125 PetriNetUnfolderBase]: For 54787/54787 co-relation queries the response was YES. [2024-06-27 22:34:18,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14827 conditions, 2062 events. 1067/2062 cut-off events. For 54787/54787 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 13145 event pairs, 176 based on Foata normal form. 1/1982 useless extension candidates. Maximal degree in co-relation 14719. Up to 1170 conditions per place. [2024-06-27 22:34:18,767 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 184 selfloop transitions, 191 changer transitions 0/391 dead transitions. [2024-06-27 22:34:18,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 391 transitions, 6580 flow [2024-06-27 22:34:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:18,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:18,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-27 22:34:18,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5405405405405406 [2024-06-27 22:34:18,768 INFO L175 Difference]: Start difference. First operand has 222 places, 354 transitions, 5271 flow. Second operand 8 states and 160 transitions. [2024-06-27 22:34:18,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 391 transitions, 6580 flow [2024-06-27 22:34:18,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 391 transitions, 6395 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:18,958 INFO L231 Difference]: Finished difference. Result has 224 places, 365 transitions, 5783 flow [2024-06-27 22:34:18,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5086, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5783, PETRI_PLACES=224, PETRI_TRANSITIONS=365} [2024-06-27 22:34:18,958 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-06-27 22:34:18,958 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 365 transitions, 5783 flow [2024-06-27 22:34:18,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:18,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:18,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:18,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:34:18,959 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:18,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:18,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1750137227, now seen corresponding path program 1 times [2024-06-27 22:34:18,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:18,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571269230] [2024-06-27 22:34:18,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:18,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:20,922 INFO 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 22:34:20,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:20,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571269230] [2024-06-27 22:34:20,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571269230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:20,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:20,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:20,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353586614] [2024-06-27 22:34:20,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:20,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:20,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:20,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:20,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:21,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:34:21,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 365 transitions, 5783 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:21,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:21,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:34:21,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:21,709 INFO L124 PetriNetUnfolderBase]: 1076/2078 cut-off events. [2024-06-27 22:34:21,709 INFO L125 PetriNetUnfolderBase]: For 60585/60585 co-relation queries the response was YES. [2024-06-27 22:34:21,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15681 conditions, 2078 events. 1076/2078 cut-off events. For 60585/60585 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 13216 event pairs, 214 based on Foata normal form. 1/1994 useless extension candidates. Maximal degree in co-relation 15571. Up to 1627 conditions per place. [2024-06-27 22:34:21,729 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 334 selfloop transitions, 39 changer transitions 0/389 dead transitions. [2024-06-27 22:34:21,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 389 transitions, 6679 flow [2024-06-27 22:34:21,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:21,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:21,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:34:21,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-27 22:34:21,731 INFO L175 Difference]: Start difference. First operand has 224 places, 365 transitions, 5783 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:34:21,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 389 transitions, 6679 flow [2024-06-27 22:34:21,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 389 transitions, 6484 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 22:34:21,938 INFO L231 Difference]: Finished difference. Result has 230 places, 367 transitions, 5707 flow [2024-06-27 22:34:21,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5588, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5707, PETRI_PLACES=230, PETRI_TRANSITIONS=367} [2024-06-27 22:34:21,939 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-27 22:34:21,939 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 367 transitions, 5707 flow [2024-06-27 22:34:21,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:21,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:21,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:21,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:34:21,939 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:21,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:21,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1750146155, now seen corresponding path program 3 times [2024-06-27 22:34:21,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:21,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804895843] [2024-06-27 22:34:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:21,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:23,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:23,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804895843] [2024-06-27 22:34:23,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804895843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:23,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:23,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:23,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679716137] [2024-06-27 22:34:23,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:23,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:23,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:23,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:23,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:34:23,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 367 transitions, 5707 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:23,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:23,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:34:23,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:24,524 INFO L124 PetriNetUnfolderBase]: 1196/2257 cut-off events. [2024-06-27 22:34:24,524 INFO L125 PetriNetUnfolderBase]: For 65797/65797 co-relation queries the response was YES. [2024-06-27 22:34:24,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17625 conditions, 2257 events. 1196/2257 cut-off events. For 65797/65797 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14177 event pairs, 116 based on Foata normal form. 1/2183 useless extension candidates. Maximal degree in co-relation 17512. Up to 1615 conditions per place. [2024-06-27 22:34:24,544 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 260 selfloop transitions, 136 changer transitions 0/404 dead transitions. [2024-06-27 22:34:24,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 404 transitions, 7020 flow [2024-06-27 22:34:24,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:24,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:34:24,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 22:34:24,545 INFO L175 Difference]: Start difference. First operand has 230 places, 367 transitions, 5707 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:34:24,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 404 transitions, 7020 flow [2024-06-27 22:34:24,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 404 transitions, 6941 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:24,738 INFO L231 Difference]: Finished difference. Result has 236 places, 383 transitions, 6319 flow [2024-06-27 22:34:24,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5628, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6319, PETRI_PLACES=236, PETRI_TRANSITIONS=383} [2024-06-27 22:34:24,739 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-27 22:34:24,739 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 383 transitions, 6319 flow [2024-06-27 22:34:24,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:24,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:24,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:24,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:34:24,740 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:24,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:24,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1566814415, now seen corresponding path program 4 times [2024-06-27 22:34:24,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:24,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713627241] [2024-06-27 22:34:24,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:24,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:26,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:26,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713627241] [2024-06-27 22:34:26,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713627241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:26,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:26,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:26,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519721385] [2024-06-27 22:34:26,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:26,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:26,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:26,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:26,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:26,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:34:26,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 383 transitions, 6319 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:34:26,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:26,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:34:26,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:27,662 INFO L124 PetriNetUnfolderBase]: 1194/2254 cut-off events. [2024-06-27 22:34:27,663 INFO L125 PetriNetUnfolderBase]: For 68419/68419 co-relation queries the response was YES. [2024-06-27 22:34:27,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17988 conditions, 2254 events. 1194/2254 cut-off events. For 68419/68419 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14161 event pairs, 117 based on Foata normal form. 1/2180 useless extension candidates. Maximal degree in co-relation 17872. Up to 1725 conditions per place. [2024-06-27 22:34:27,685 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 296 selfloop transitions, 100 changer transitions 0/404 dead transitions. [2024-06-27 22:34:27,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 404 transitions, 7230 flow [2024-06-27 22:34:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:27,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:34:27,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:34:27,686 INFO L175 Difference]: Start difference. First operand has 236 places, 383 transitions, 6319 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:34:27,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 404 transitions, 7230 flow [2024-06-27 22:34:27,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 404 transitions, 6971 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-06-27 22:34:27,916 INFO L231 Difference]: Finished difference. Result has 242 places, 384 transitions, 6304 flow [2024-06-27 22:34:27,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6074, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6304, PETRI_PLACES=242, PETRI_TRANSITIONS=384} [2024-06-27 22:34:27,917 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 201 predicate places. [2024-06-27 22:34:27,917 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 384 transitions, 6304 flow [2024-06-27 22:34:27,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:34:27,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:27,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:27,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:34:27,918 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:27,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:27,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1891511141, now seen corresponding path program 3 times [2024-06-27 22:34:27,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:27,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910749585] [2024-06-27 22:34:27,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:27,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:29,758 INFO 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 22:34:29,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:29,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910749585] [2024-06-27 22:34:29,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910749585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:29,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:29,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:29,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515906771] [2024-06-27 22:34:29,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:29,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:29,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:29,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:29,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:34:29,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 384 transitions, 6304 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:29,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:29,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:34:29,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:30,443 INFO L124 PetriNetUnfolderBase]: 1116/2152 cut-off events. [2024-06-27 22:34:30,443 INFO L125 PetriNetUnfolderBase]: For 68154/68154 co-relation queries the response was YES. [2024-06-27 22:34:30,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16866 conditions, 2152 events. 1116/2152 cut-off events. For 68154/68154 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 13807 event pairs, 152 based on Foata normal form. 1/2070 useless extension candidates. Maximal degree in co-relation 16748. Up to 1229 conditions per place. [2024-06-27 22:34:30,464 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 212 selfloop transitions, 183 changer transitions 0/411 dead transitions. [2024-06-27 22:34:30,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 411 transitions, 7427 flow [2024-06-27 22:34:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-27 22:34:30,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5371621621621622 [2024-06-27 22:34:30,465 INFO L175 Difference]: Start difference. First operand has 242 places, 384 transitions, 6304 flow. Second operand 8 states and 159 transitions. [2024-06-27 22:34:30,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 411 transitions, 7427 flow [2024-06-27 22:34:30,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 411 transitions, 7162 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:30,689 INFO L231 Difference]: Finished difference. Result has 243 places, 388 transitions, 6515 flow [2024-06-27 22:34:30,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6039, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6515, PETRI_PLACES=243, PETRI_TRANSITIONS=388} [2024-06-27 22:34:30,689 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-27 22:34:30,689 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 388 transitions, 6515 flow [2024-06-27 22:34:30,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:30,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:30,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:30,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:34:30,690 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:30,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:30,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1750376547, now seen corresponding path program 4 times [2024-06-27 22:34:30,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:30,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073259463] [2024-06-27 22:34:30,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:30,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:32,111 INFO 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 22:34:32,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:32,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073259463] [2024-06-27 22:34:32,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073259463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:32,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:32,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:32,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168939749] [2024-06-27 22:34:32,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:32,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:32,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:32,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:32,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:34:32,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 388 transitions, 6515 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:32,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:32,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:34:32,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:32,910 INFO L124 PetriNetUnfolderBase]: 1136/2197 cut-off events. [2024-06-27 22:34:32,910 INFO L125 PetriNetUnfolderBase]: For 73597/73597 co-relation queries the response was YES. [2024-06-27 22:34:32,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17316 conditions, 2197 events. 1136/2197 cut-off events. For 73597/73597 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14159 event pairs, 129 based on Foata normal form. 4/2117 useless extension candidates. Maximal degree in co-relation 17197. Up to 1485 conditions per place. [2024-06-27 22:34:32,930 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 245 selfloop transitions, 153 changer transitions 0/414 dead transitions. [2024-06-27 22:34:32,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 414 transitions, 7625 flow [2024-06-27 22:34:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 22:34:32,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5337837837837838 [2024-06-27 22:34:32,931 INFO L175 Difference]: Start difference. First operand has 243 places, 388 transitions, 6515 flow. Second operand 8 states and 158 transitions. [2024-06-27 22:34:32,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 414 transitions, 7625 flow [2024-06-27 22:34:33,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 414 transitions, 7304 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 22:34:33,153 INFO L231 Difference]: Finished difference. Result has 247 places, 391 transitions, 6582 flow [2024-06-27 22:34:33,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6197, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6582, PETRI_PLACES=247, PETRI_TRANSITIONS=391} [2024-06-27 22:34:33,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2024-06-27 22:34:33,154 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 391 transitions, 6582 flow [2024-06-27 22:34:33,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:33,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:33,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:33,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:34:33,155 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:33,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:33,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1750383305, now seen corresponding path program 5 times [2024-06-27 22:34:33,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:33,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874437853] [2024-06-27 22:34:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:33,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:34,885 INFO 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 22:34:34,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:34,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874437853] [2024-06-27 22:34:34,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874437853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:34,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:34,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:34,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930671772] [2024-06-27 22:34:34,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:34,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:34,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:34,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:34,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:34,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:34:34,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 391 transitions, 6582 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:34,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:34,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:34:34,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:35,825 INFO L124 PetriNetUnfolderBase]: 1226/2321 cut-off events. [2024-06-27 22:34:35,825 INFO L125 PetriNetUnfolderBase]: For 69955/69955 co-relation queries the response was YES. [2024-06-27 22:34:35,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18708 conditions, 2321 events. 1226/2321 cut-off events. For 69955/69955 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14657 event pairs, 145 based on Foata normal form. 1/2243 useless extension candidates. Maximal degree in co-relation 18588. Up to 1763 conditions per place. [2024-06-27 22:34:35,849 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 299 selfloop transitions, 105 changer transitions 0/412 dead transitions. [2024-06-27 22:34:35,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 412 transitions, 7497 flow [2024-06-27 22:34:35,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:35,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:35,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:34:35,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:34:35,850 INFO L175 Difference]: Start difference. First operand has 247 places, 391 transitions, 6582 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:34:35,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 412 transitions, 7497 flow [2024-06-27 22:34:36,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 412 transitions, 6999 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:36,107 INFO L231 Difference]: Finished difference. Result has 251 places, 392 transitions, 6326 flow [2024-06-27 22:34:36,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6090, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6326, PETRI_PLACES=251, PETRI_TRANSITIONS=392} [2024-06-27 22:34:36,107 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-06-27 22:34:36,107 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 392 transitions, 6326 flow [2024-06-27 22:34:36,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:36,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:36,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:36,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:34:36,108 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:36,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:36,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1548319929, now seen corresponding path program 5 times [2024-06-27 22:34:36,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:36,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429980969] [2024-06-27 22:34:36,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:36,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:37,954 INFO 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 22:34:37,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:37,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429980969] [2024-06-27 22:34:37,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429980969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:37,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:37,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:37,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097019398] [2024-06-27 22:34:37,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:37,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:37,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:37,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:37,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:38,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:34:38,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 392 transitions, 6326 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:38,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:38,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:34:38,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:39,004 INFO L124 PetriNetUnfolderBase]: 1248/2359 cut-off events. [2024-06-27 22:34:39,004 INFO L125 PetriNetUnfolderBase]: For 72027/72027 co-relation queries the response was YES. [2024-06-27 22:34:39,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18530 conditions, 2359 events. 1248/2359 cut-off events. For 72027/72027 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 14961 event pairs, 218 based on Foata normal form. 2/2285 useless extension candidates. Maximal degree in co-relation 18409. Up to 1870 conditions per place. [2024-06-27 22:34:39,026 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 386 selfloop transitions, 29 changer transitions 0/423 dead transitions. [2024-06-27 22:34:39,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 423 transitions, 7415 flow [2024-06-27 22:34:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:39,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:34:39,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-27 22:34:39,028 INFO L175 Difference]: Start difference. First operand has 251 places, 392 transitions, 6326 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:34:39,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 423 transitions, 7415 flow [2024-06-27 22:34:39,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 423 transitions, 7168 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:39,251 INFO L231 Difference]: Finished difference. Result has 253 places, 395 transitions, 6206 flow [2024-06-27 22:34:39,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6079, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6206, PETRI_PLACES=253, PETRI_TRANSITIONS=395} [2024-06-27 22:34:39,252 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-06-27 22:34:39,252 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 395 transitions, 6206 flow [2024-06-27 22:34:39,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:39,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:39,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:39,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:34:39,252 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:39,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:39,252 INFO L85 PathProgramCache]: Analyzing trace with hash 447002717, now seen corresponding path program 6 times [2024-06-27 22:34:39,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:39,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43379588] [2024-06-27 22:34:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:39,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:40,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:40,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43379588] [2024-06-27 22:34:40,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43379588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:40,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:40,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:40,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938478799] [2024-06-27 22:34:40,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:40,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:40,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:40,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:40,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:41,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:34:41,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 395 transitions, 6206 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:41,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:41,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:34:41,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:41,803 INFO L124 PetriNetUnfolderBase]: 1283/2441 cut-off events. [2024-06-27 22:34:41,803 INFO L125 PetriNetUnfolderBase]: For 86994/86994 co-relation queries the response was YES. [2024-06-27 22:34:41,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19398 conditions, 2441 events. 1283/2441 cut-off events. For 86994/86994 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 15996 event pairs, 158 based on Foata normal form. 2/2352 useless extension candidates. Maximal degree in co-relation 19275. Up to 980 conditions per place. [2024-06-27 22:34:41,831 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 233 selfloop transitions, 193 changer transitions 0/442 dead transitions. [2024-06-27 22:34:41,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 442 transitions, 7938 flow [2024-06-27 22:34:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:41,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-27 22:34:41,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-06-27 22:34:41,832 INFO L175 Difference]: Start difference. First operand has 253 places, 395 transitions, 6206 flow. Second operand 8 states and 168 transitions. [2024-06-27 22:34:41,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 442 transitions, 7938 flow [2024-06-27 22:34:42,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 442 transitions, 7873 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:42,153 INFO L231 Difference]: Finished difference. Result has 260 places, 410 transitions, 7112 flow [2024-06-27 22:34:42,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6141, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7112, PETRI_PLACES=260, PETRI_TRANSITIONS=410} [2024-06-27 22:34:42,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-27 22:34:42,154 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 410 transitions, 7112 flow [2024-06-27 22:34:42,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:42,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:42,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:42,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:34:42,155 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:42,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash 447003027, now seen corresponding path program 2 times [2024-06-27 22:34:42,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:42,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169672158] [2024-06-27 22:34:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:42,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:44,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:44,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169672158] [2024-06-27 22:34:44,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169672158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:44,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:44,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:44,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437081634] [2024-06-27 22:34:44,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:44,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:44,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:44,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:44,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:44,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:34:44,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 410 transitions, 7112 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:44,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:44,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:34:44,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:44,987 INFO L124 PetriNetUnfolderBase]: 1284/2459 cut-off events. [2024-06-27 22:34:44,987 INFO L125 PetriNetUnfolderBase]: For 92388/92388 co-relation queries the response was YES. [2024-06-27 22:34:45,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20644 conditions, 2459 events. 1284/2459 cut-off events. For 92388/92388 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 16196 event pairs, 170 based on Foata normal form. 1/2365 useless extension candidates. Maximal degree in co-relation 20517. Up to 1819 conditions per place. [2024-06-27 22:34:45,015 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 355 selfloop transitions, 65 changer transitions 0/436 dead transitions. [2024-06-27 22:34:45,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 436 transitions, 8192 flow [2024-06-27 22:34:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:45,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:45,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:34:45,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236486486486487 [2024-06-27 22:34:45,016 INFO L175 Difference]: Start difference. First operand has 260 places, 410 transitions, 7112 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:34:45,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 436 transitions, 8192 flow [2024-06-27 22:34:45,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 436 transitions, 8032 flow, removed 54 selfloop flow, removed 1 redundant places. [2024-06-27 22:34:45,382 INFO L231 Difference]: Finished difference. Result has 268 places, 414 transitions, 7189 flow [2024-06-27 22:34:45,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6958, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7189, PETRI_PLACES=268, PETRI_TRANSITIONS=414} [2024-06-27 22:34:45,383 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-06-27 22:34:45,383 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 414 transitions, 7189 flow [2024-06-27 22:34:45,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:45,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:45,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:45,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:34:45,384 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:45,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:45,384 INFO L85 PathProgramCache]: Analyzing trace with hash -357695685, now seen corresponding path program 7 times [2024-06-27 22:34:45,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:45,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028085103] [2024-06-27 22:34:45,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:45,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:46,895 INFO 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 22:34:46,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:46,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028085103] [2024-06-27 22:34:46,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028085103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:46,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:46,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:34:46,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592332109] [2024-06-27 22:34:46,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:46,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:34:46,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:46,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:34:46,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:34:46,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:34:46,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 414 transitions, 7189 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:46,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:46,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:34:46,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:47,594 INFO L124 PetriNetUnfolderBase]: 1282/2408 cut-off events. [2024-06-27 22:34:47,594 INFO L125 PetriNetUnfolderBase]: For 88828/88828 co-relation queries the response was YES. [2024-06-27 22:34:47,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20410 conditions, 2408 events. 1282/2408 cut-off events. For 88828/88828 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15710 event pairs, 116 based on Foata normal form. 2/2326 useless extension candidates. Maximal degree in co-relation 20281. Up to 978 conditions per place. [2024-06-27 22:34:47,616 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 230 selfloop transitions, 201 changer transitions 0/448 dead transitions. [2024-06-27 22:34:47,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 448 transitions, 8525 flow [2024-06-27 22:34:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-27 22:34:47,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5844594594594594 [2024-06-27 22:34:47,617 INFO L175 Difference]: Start difference. First operand has 268 places, 414 transitions, 7189 flow. Second operand 8 states and 173 transitions. [2024-06-27 22:34:47,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 448 transitions, 8525 flow [2024-06-27 22:34:47,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 448 transitions, 8356 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:47,961 INFO L231 Difference]: Finished difference. Result has 273 places, 418 transitions, 7552 flow [2024-06-27 22:34:47,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7032, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7552, PETRI_PLACES=273, PETRI_TRANSITIONS=418} [2024-06-27 22:34:47,962 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 232 predicate places. [2024-06-27 22:34:47,962 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 418 transitions, 7552 flow [2024-06-27 22:34:47,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:47,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:47,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:47,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:34:47,963 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:47,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:47,963 INFO L85 PathProgramCache]: Analyzing trace with hash -357695933, now seen corresponding path program 6 times [2024-06-27 22:34:47,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:47,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836065393] [2024-06-27 22:34:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:47,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:49,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:49,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836065393] [2024-06-27 22:34:49,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836065393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:49,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:49,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:49,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802664096] [2024-06-27 22:34:49,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:49,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:49,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:49,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:49,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:50,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:34:50,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 418 transitions, 7552 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:34:50,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:50,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:34:50,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:51,005 INFO L124 PetriNetUnfolderBase]: 1409/2667 cut-off events. [2024-06-27 22:34:51,005 INFO L125 PetriNetUnfolderBase]: For 95932/95932 co-relation queries the response was YES. [2024-06-27 22:34:51,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23210 conditions, 2667 events. 1409/2667 cut-off events. For 95932/95932 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 17407 event pairs, 190 based on Foata normal form. 1/2577 useless extension candidates. Maximal degree in co-relation 23077. Up to 1568 conditions per place. [2024-06-27 22:34:51,035 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 220 selfloop transitions, 226 changer transitions 0/454 dead transitions. [2024-06-27 22:34:51,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 454 transitions, 9003 flow [2024-06-27 22:34:51,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:51,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:34:51,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:34:51,036 INFO L175 Difference]: Start difference. First operand has 273 places, 418 transitions, 7552 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:34:51,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 454 transitions, 9003 flow [2024-06-27 22:34:51,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 454 transitions, 8608 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 22:34:51,429 INFO L231 Difference]: Finished difference. Result has 281 places, 428 transitions, 8043 flow [2024-06-27 22:34:51,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7168, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8043, PETRI_PLACES=281, PETRI_TRANSITIONS=428} [2024-06-27 22:34:51,429 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-27 22:34:51,430 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 428 transitions, 8043 flow [2024-06-27 22:34:51,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:34:51,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:51,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:51,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:34:51,430 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:51,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:51,431 INFO L85 PathProgramCache]: Analyzing trace with hash 161657079, now seen corresponding path program 7 times [2024-06-27 22:34:51,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:51,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981423937] [2024-06-27 22:34:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:51,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:53,054 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 22:34:53,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:53,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981423937] [2024-06-27 22:34:53,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981423937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:53,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:53,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:53,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986356803] [2024-06-27 22:34:53,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:53,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:53,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:53,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:53,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:53,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:34:53,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 428 transitions, 8043 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:53,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:53,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:34:53,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:54,002 INFO L124 PetriNetUnfolderBase]: 1407/2664 cut-off events. [2024-06-27 22:34:54,003 INFO L125 PetriNetUnfolderBase]: For 97444/97444 co-relation queries the response was YES. [2024-06-27 22:34:54,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23463 conditions, 2664 events. 1407/2664 cut-off events. For 97444/97444 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 17402 event pairs, 193 based on Foata normal form. 1/2574 useless extension candidates. Maximal degree in co-relation 23326. Up to 1940 conditions per place. [2024-06-27 22:34:54,112 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 293 selfloop transitions, 150 changer transitions 0/451 dead transitions. [2024-06-27 22:34:54,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 451 transitions, 9126 flow [2024-06-27 22:34:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:54,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:34:54,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:34:54,114 INFO L175 Difference]: Start difference. First operand has 281 places, 428 transitions, 8043 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:34:54,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 451 transitions, 9126 flow [2024-06-27 22:34:54,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 451 transitions, 8772 flow, removed 89 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:54,467 INFO L231 Difference]: Finished difference. Result has 286 places, 431 transitions, 8108 flow [2024-06-27 22:34:54,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7691, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8108, PETRI_PLACES=286, PETRI_TRANSITIONS=431} [2024-06-27 22:34:54,467 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 245 predicate places. [2024-06-27 22:34:54,467 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 431 transitions, 8108 flow [2024-06-27 22:34:54,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:54,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:54,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:54,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:34:54,468 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:54,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:54,468 INFO L85 PathProgramCache]: Analyzing trace with hash 161902847, now seen corresponding path program 8 times [2024-06-27 22:34:54,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:54,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248169036] [2024-06-27 22:34:54,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:54,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:56,049 INFO 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 22:34:56,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:56,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248169036] [2024-06-27 22:34:56,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248169036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:56,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:56,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:56,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681741527] [2024-06-27 22:34:56,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:56,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:56,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:56,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:56,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:56,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:34:56,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 431 transitions, 8108 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:56,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:56,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:34:56,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:56,897 INFO L124 PetriNetUnfolderBase]: 1341/2595 cut-off events. [2024-06-27 22:34:56,897 INFO L125 PetriNetUnfolderBase]: For 100509/100509 co-relation queries the response was YES. [2024-06-27 22:34:56,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22440 conditions, 2595 events. 1341/2595 cut-off events. For 100509/100509 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 17499 event pairs, 206 based on Foata normal form. 2/2493 useless extension candidates. Maximal degree in co-relation 22302. Up to 1766 conditions per place. [2024-06-27 22:34:56,929 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 282 selfloop transitions, 162 changer transitions 0/460 dead transitions. [2024-06-27 22:34:56,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 460 transitions, 9429 flow [2024-06-27 22:34:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-27 22:34:56,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5472972972972973 [2024-06-27 22:34:56,931 INFO L175 Difference]: Start difference. First operand has 286 places, 431 transitions, 8108 flow. Second operand 8 states and 162 transitions. [2024-06-27 22:34:56,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 460 transitions, 9429 flow [2024-06-27 22:34:57,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 460 transitions, 9043 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:57,393 INFO L231 Difference]: Finished difference. Result has 288 places, 437 transitions, 8257 flow [2024-06-27 22:34:57,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7722, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8257, PETRI_PLACES=288, PETRI_TRANSITIONS=437} [2024-06-27 22:34:57,394 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-27 22:34:57,394 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 437 transitions, 8257 flow [2024-06-27 22:34:57,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:57,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:57,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:57,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:34:57,395 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:57,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:57,395 INFO L85 PathProgramCache]: Analyzing trace with hash 161894229, now seen corresponding path program 8 times [2024-06-27 22:34:57,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:57,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479381855] [2024-06-27 22:34:57,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:57,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:59,725 INFO 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 22:34:59,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:59,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479381855] [2024-06-27 22:34:59,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479381855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:59,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:59,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:59,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811112345] [2024-06-27 22:34:59,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:59,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:59,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:59,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:59,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:59,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:34:59,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 437 transitions, 8257 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:34:59,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:59,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:34:59,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:00,833 INFO L124 PetriNetUnfolderBase]: 1478/2817 cut-off events. [2024-06-27 22:35:00,833 INFO L125 PetriNetUnfolderBase]: For 110079/110079 co-relation queries the response was YES. [2024-06-27 22:35:00,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25230 conditions, 2817 events. 1478/2817 cut-off events. For 110079/110079 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 18771 event pairs, 202 based on Foata normal form. 1/2719 useless extension candidates. Maximal degree in co-relation 25090. Up to 1996 conditions per place. [2024-06-27 22:35:00,865 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 295 selfloop transitions, 166 changer transitions 0/469 dead transitions. [2024-06-27 22:35:00,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 469 transitions, 9695 flow [2024-06-27 22:35:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:00,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:00,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:35:00,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:35:00,867 INFO L175 Difference]: Start difference. First operand has 288 places, 437 transitions, 8257 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:35:00,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 469 transitions, 9695 flow [2024-06-27 22:35:01,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 469 transitions, 9448 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-27 22:35:01,325 INFO L231 Difference]: Finished difference. Result has 295 places, 444 transitions, 8609 flow [2024-06-27 22:35:01,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8010, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8609, PETRI_PLACES=295, PETRI_TRANSITIONS=444} [2024-06-27 22:35:01,327 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-27 22:35:01,327 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 444 transitions, 8609 flow [2024-06-27 22:35:01,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:35:01,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:01,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:01,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:35:01,327 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:01,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:01,328 INFO L85 PathProgramCache]: Analyzing trace with hash 161894477, now seen corresponding path program 9 times [2024-06-27 22:35:01,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:01,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660890950] [2024-06-27 22:35:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:01,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:03,033 INFO 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 22:35:03,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:03,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660890950] [2024-06-27 22:35:03,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660890950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:03,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:03,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:03,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640233242] [2024-06-27 22:35:03,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:03,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:03,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:03,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:03,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:03,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:35:03,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 444 transitions, 8609 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:03,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:03,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:35:03,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:03,856 INFO L124 PetriNetUnfolderBase]: 1382/2685 cut-off events. [2024-06-27 22:35:03,856 INFO L125 PetriNetUnfolderBase]: For 110743/110743 co-relation queries the response was YES. [2024-06-27 22:35:03,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23701 conditions, 2685 events. 1382/2685 cut-off events. For 110743/110743 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 18274 event pairs, 208 based on Foata normal form. 2/2578 useless extension candidates. Maximal degree in co-relation 23558. Up to 1817 conditions per place. [2024-06-27 22:35:03,887 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 295 selfloop transitions, 160 changer transitions 0/471 dead transitions. [2024-06-27 22:35:03,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 471 transitions, 9890 flow [2024-06-27 22:35:03,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:35:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:35:03,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-27 22:35:03,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5506756756756757 [2024-06-27 22:35:03,889 INFO L175 Difference]: Start difference. First operand has 295 places, 444 transitions, 8609 flow. Second operand 8 states and 163 transitions. [2024-06-27 22:35:03,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 471 transitions, 9890 flow [2024-06-27 22:35:04,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 471 transitions, 9555 flow, removed 82 selfloop flow, removed 5 redundant places. [2024-06-27 22:35:04,517 INFO L231 Difference]: Finished difference. Result has 298 places, 446 transitions, 8646 flow [2024-06-27 22:35:04,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8274, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8646, PETRI_PLACES=298, PETRI_TRANSITIONS=446} [2024-06-27 22:35:04,518 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-27 22:35:04,518 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 446 transitions, 8646 flow [2024-06-27 22:35:04,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:04,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:04,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:04,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:35:04,518 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:04,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:04,519 INFO L85 PathProgramCache]: Analyzing trace with hash 161663837, now seen corresponding path program 10 times [2024-06-27 22:35:04,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:04,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424324252] [2024-06-27 22:35:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:04,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:05,951 INFO 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 22:35:05,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:05,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424324252] [2024-06-27 22:35:05,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424324252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:05,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:05,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:05,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391159814] [2024-06-27 22:35:05,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:05,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:05,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:05,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:05,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:06,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:35:06,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 446 transitions, 8646 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:06,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:06,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:35:06,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:06,747 INFO L124 PetriNetUnfolderBase]: 1393/2733 cut-off events. [2024-06-27 22:35:06,747 INFO L125 PetriNetUnfolderBase]: For 108025/108025 co-relation queries the response was YES. [2024-06-27 22:35:06,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23933 conditions, 2733 events. 1393/2733 cut-off events. For 108025/108025 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 18872 event pairs, 207 based on Foata normal form. 2/2618 useless extension candidates. Maximal degree in co-relation 23789. Up to 1938 conditions per place. [2024-06-27 22:35:06,779 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 342 selfloop transitions, 118 changer transitions 0/476 dead transitions. [2024-06-27 22:35:06,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 476 transitions, 9892 flow [2024-06-27 22:35:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:35:06,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:35:06,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 22:35:06,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2024-06-27 22:35:06,780 INFO L175 Difference]: Start difference. First operand has 298 places, 446 transitions, 8646 flow. Second operand 8 states and 156 transitions. [2024-06-27 22:35:06,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 476 transitions, 9892 flow [2024-06-27 22:35:07,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 476 transitions, 9570 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 22:35:07,235 INFO L231 Difference]: Finished difference. Result has 303 places, 455 transitions, 8893 flow [2024-06-27 22:35:07,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8325, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8893, PETRI_PLACES=303, PETRI_TRANSITIONS=455} [2024-06-27 22:35:07,235 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 262 predicate places. [2024-06-27 22:35:07,236 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 455 transitions, 8893 flow [2024-06-27 22:35:07,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:07,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:07,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:07,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:35:07,236 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:07,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:07,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1252861471, now seen corresponding path program 9 times [2024-06-27 22:35:07,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:07,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656613409] [2024-06-27 22:35:07,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:07,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:09,377 INFO 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 22:35:09,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:09,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656613409] [2024-06-27 22:35:09,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656613409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:09,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:09,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:09,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347768283] [2024-06-27 22:35:09,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:09,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:09,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:09,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:09,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:09,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:09,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 455 transitions, 8893 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:35:09,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:09,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:09,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:10,559 INFO L124 PetriNetUnfolderBase]: 1512/2890 cut-off events. [2024-06-27 22:35:10,560 INFO L125 PetriNetUnfolderBase]: For 110259/110259 co-relation queries the response was YES. [2024-06-27 22:35:10,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26032 conditions, 2890 events. 1512/2890 cut-off events. For 110259/110259 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19391 event pairs, 181 based on Foata normal form. 1/2788 useless extension candidates. Maximal degree in co-relation 25885. Up to 2083 conditions per place. [2024-06-27 22:35:10,595 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 313 selfloop transitions, 159 changer transitions 0/480 dead transitions. [2024-06-27 22:35:10,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 480 transitions, 10029 flow [2024-06-27 22:35:10,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:35:10,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 22:35:10,596 INFO L175 Difference]: Start difference. First operand has 303 places, 455 transitions, 8893 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:35:10,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 480 transitions, 10029 flow [2024-06-27 22:35:11,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 480 transitions, 9805 flow, removed 83 selfloop flow, removed 2 redundant places. [2024-06-27 22:35:11,114 INFO L231 Difference]: Finished difference. Result has 311 places, 458 transitions, 9094 flow [2024-06-27 22:35:11,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8681, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9094, PETRI_PLACES=311, PETRI_TRANSITIONS=458} [2024-06-27 22:35:11,115 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-27 22:35:11,115 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 458 transitions, 9094 flow [2024-06-27 22:35:11,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:35:11,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:11,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:11,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:35:11,115 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:11,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:11,116 INFO L85 PathProgramCache]: Analyzing trace with hash -743811445, now seen corresponding path program 10 times [2024-06-27 22:35:11,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:11,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724128239] [2024-06-27 22:35:11,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:11,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:12,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:12,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724128239] [2024-06-27 22:35:12,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724128239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:12,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:12,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:12,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105327885] [2024-06-27 22:35:12,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:12,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:12,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:12,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:12,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:12,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:12,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 458 transitions, 9094 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:35:12,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:12,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:12,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:13,907 INFO L124 PetriNetUnfolderBase]: 1530/2926 cut-off events. [2024-06-27 22:35:13,907 INFO L125 PetriNetUnfolderBase]: For 112689/112689 co-relation queries the response was YES. [2024-06-27 22:35:13,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26624 conditions, 2926 events. 1530/2926 cut-off events. For 112689/112689 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 19708 event pairs, 191 based on Foata normal form. 1/2827 useless extension candidates. Maximal degree in co-relation 26474. Up to 2255 conditions per place. [2024-06-27 22:35:13,943 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 376 selfloop transitions, 110 changer transitions 0/494 dead transitions. [2024-06-27 22:35:13,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 494 transitions, 10405 flow [2024-06-27 22:35:13,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:13,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:13,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:35:13,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:35:13,944 INFO L175 Difference]: Start difference. First operand has 311 places, 458 transitions, 9094 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:35:13,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 494 transitions, 10405 flow [2024-06-27 22:35:14,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 494 transitions, 9988 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:14,524 INFO L231 Difference]: Finished difference. Result has 313 places, 464 transitions, 9086 flow [2024-06-27 22:35:14,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8677, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9086, PETRI_PLACES=313, PETRI_TRANSITIONS=464} [2024-06-27 22:35:14,524 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-27 22:35:14,524 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 464 transitions, 9086 flow [2024-06-27 22:35:14,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:35:14,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:14,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:14,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:35:14,525 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:14,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2025288901, now seen corresponding path program 11 times [2024-06-27 22:35:14,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:14,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404915107] [2024-06-27 22:35:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:14,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:16,298 INFO 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 22:35:16,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:16,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404915107] [2024-06-27 22:35:16,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404915107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:16,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:16,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:16,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028078375] [2024-06-27 22:35:16,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:16,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:16,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:16,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:16,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:16,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:16,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 464 transitions, 9086 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:16,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:16,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:16,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:17,551 INFO L124 PetriNetUnfolderBase]: 1566/3012 cut-off events. [2024-06-27 22:35:17,551 INFO L125 PetriNetUnfolderBase]: For 116446/116446 co-relation queries the response was YES. [2024-06-27 22:35:17,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27193 conditions, 3012 events. 1566/3012 cut-off events. For 116446/116446 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 20524 event pairs, 166 based on Foata normal form. 1/2907 useless extension candidates. Maximal degree in co-relation 27042. Up to 2274 conditions per place. [2024-06-27 22:35:17,585 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 381 selfloop transitions, 122 changer transitions 0/511 dead transitions. [2024-06-27 22:35:17,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 511 transitions, 10646 flow [2024-06-27 22:35:17,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:17,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:17,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:35:17,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:35:17,586 INFO L175 Difference]: Start difference. First operand has 313 places, 464 transitions, 9086 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:35:17,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 511 transitions, 10646 flow [2024-06-27 22:35:18,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 511 transitions, 10417 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:18,125 INFO L231 Difference]: Finished difference. Result has 316 places, 482 transitions, 9619 flow [2024-06-27 22:35:18,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8857, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9619, PETRI_PLACES=316, PETRI_TRANSITIONS=482} [2024-06-27 22:35:18,125 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-27 22:35:18,125 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 482 transitions, 9619 flow [2024-06-27 22:35:18,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:18,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:18,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:18,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:35:18,126 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:18,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:18,126 INFO L85 PathProgramCache]: Analyzing trace with hash -794591983, now seen corresponding path program 12 times [2024-06-27 22:35:18,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:18,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531684006] [2024-06-27 22:35:18,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:18,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:19,806 INFO 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 22:35:19,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:19,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531684006] [2024-06-27 22:35:19,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531684006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:19,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:19,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:19,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035530342] [2024-06-27 22:35:19,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:19,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:19,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:19,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:19,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:19,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:19,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 482 transitions, 9619 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:19,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:19,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:19,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:20,915 INFO L124 PetriNetUnfolderBase]: 1579/3048 cut-off events. [2024-06-27 22:35:20,915 INFO L125 PetriNetUnfolderBase]: For 120640/120640 co-relation queries the response was YES. [2024-06-27 22:35:21,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27653 conditions, 3048 events. 1579/3048 cut-off events. For 120640/120640 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 20909 event pairs, 186 based on Foata normal form. 1/2941 useless extension candidates. Maximal degree in co-relation 27500. Up to 2343 conditions per place. [2024-06-27 22:35:21,052 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 413 selfloop transitions, 99 changer transitions 0/520 dead transitions. [2024-06-27 22:35:21,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 520 transitions, 11064 flow [2024-06-27 22:35:21,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:21,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:35:21,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 22:35:21,054 INFO L175 Difference]: Start difference. First operand has 316 places, 482 transitions, 9619 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:35:21,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 520 transitions, 11064 flow [2024-06-27 22:35:21,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 520 transitions, 10752 flow, removed 97 selfloop flow, removed 6 redundant places. [2024-06-27 22:35:21,635 INFO L231 Difference]: Finished difference. Result has 320 places, 490 transitions, 9766 flow [2024-06-27 22:35:21,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9319, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9766, PETRI_PLACES=320, PETRI_TRANSITIONS=490} [2024-06-27 22:35:21,636 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-27 22:35:21,636 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 490 transitions, 9766 flow [2024-06-27 22:35:21,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:21,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:21,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:21,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:35:21,636 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:21,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:21,637 INFO L85 PathProgramCache]: Analyzing trace with hash -794585473, now seen corresponding path program 13 times [2024-06-27 22:35:21,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:21,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484706488] [2024-06-27 22:35:21,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:21,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:23,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:23,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484706488] [2024-06-27 22:35:23,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484706488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:23,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:23,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:23,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570477710] [2024-06-27 22:35:23,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:23,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:23,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:23,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:23,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:23,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 490 transitions, 9766 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:35:23,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:23,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:23,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:24,652 INFO L124 PetriNetUnfolderBase]: 1625/3164 cut-off events. [2024-06-27 22:35:24,652 INFO L125 PetriNetUnfolderBase]: For 122494/122494 co-relation queries the response was YES. [2024-06-27 22:35:24,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28493 conditions, 3164 events. 1625/3164 cut-off events. For 122494/122494 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 22073 event pairs, 186 based on Foata normal form. 1/3050 useless extension candidates. Maximal degree in co-relation 28338. Up to 2349 conditions per place. [2024-06-27 22:35:24,693 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 405 selfloop transitions, 131 changer transitions 0/544 dead transitions. [2024-06-27 22:35:24,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 544 transitions, 11557 flow [2024-06-27 22:35:24,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:35:24,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 22:35:24,694 INFO L175 Difference]: Start difference. First operand has 320 places, 490 transitions, 9766 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:35:24,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 544 transitions, 11557 flow [2024-06-27 22:35:25,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 544 transitions, 11386 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:25,368 INFO L231 Difference]: Finished difference. Result has 324 places, 513 transitions, 10490 flow [2024-06-27 22:35:25,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9595, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10490, PETRI_PLACES=324, PETRI_TRANSITIONS=513} [2024-06-27 22:35:25,369 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 283 predicate places. [2024-06-27 22:35:25,369 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 513 transitions, 10490 flow [2024-06-27 22:35:25,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:35:25,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:25,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:25,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:35:25,369 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:25,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:25,370 INFO L85 PathProgramCache]: Analyzing trace with hash -649570573, now seen corresponding path program 14 times [2024-06-27 22:35:25,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:25,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603154916] [2024-06-27 22:35:25,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:25,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:27,002 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 22:35:27,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:27,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603154916] [2024-06-27 22:35:27,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603154916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:27,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:27,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:27,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440923576] [2024-06-27 22:35:27,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:27,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:27,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:27,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:27,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:27,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:27,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 513 transitions, 10490 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:27,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:27,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:27,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:28,286 INFO L124 PetriNetUnfolderBase]: 1666/3263 cut-off events. [2024-06-27 22:35:28,287 INFO L125 PetriNetUnfolderBase]: For 130823/130823 co-relation queries the response was YES. [2024-06-27 22:35:28,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29697 conditions, 3263 events. 1666/3263 cut-off events. For 130823/130823 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 23120 event pairs, 175 based on Foata normal form. 1/3141 useless extension candidates. Maximal degree in co-relation 29540. Up to 2175 conditions per place. [2024-06-27 22:35:28,329 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 344 selfloop transitions, 218 changer transitions 0/570 dead transitions. [2024-06-27 22:35:28,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 570 transitions, 12514 flow [2024-06-27 22:35:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:28,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 22:35:28,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 22:35:28,330 INFO L175 Difference]: Start difference. First operand has 324 places, 513 transitions, 10490 flow. Second operand 10 states and 186 transitions. [2024-06-27 22:35:28,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 570 transitions, 12514 flow [2024-06-27 22:35:28,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 570 transitions, 12292 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-27 22:35:28,985 INFO L231 Difference]: Finished difference. Result has 331 places, 535 transitions, 11486 flow [2024-06-27 22:35:28,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10268, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11486, PETRI_PLACES=331, PETRI_TRANSITIONS=535} [2024-06-27 22:35:28,985 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-27 22:35:28,986 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 535 transitions, 11486 flow [2024-06-27 22:35:28,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:28,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:28,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:28,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:35:28,986 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:28,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:28,987 INFO L85 PathProgramCache]: Analyzing trace with hash -649807723, now seen corresponding path program 15 times [2024-06-27 22:35:28,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:28,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506440359] [2024-06-27 22:35:28,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:28,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:30,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:30,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506440359] [2024-06-27 22:35:30,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506440359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:30,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:30,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:30,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6573416] [2024-06-27 22:35:30,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:30,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:30,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:30,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:30,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:30,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:30,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 535 transitions, 11486 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:35:30,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:30,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:30,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:31,786 INFO L124 PetriNetUnfolderBase]: 1662/3256 cut-off events. [2024-06-27 22:35:31,787 INFO L125 PetriNetUnfolderBase]: For 136039/136039 co-relation queries the response was YES. [2024-06-27 22:35:31,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30439 conditions, 3256 events. 1662/3256 cut-off events. For 136039/136039 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 23019 event pairs, 187 based on Foata normal form. 1/3134 useless extension candidates. Maximal degree in co-relation 30277. Up to 2411 conditions per place. [2024-06-27 22:35:31,830 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 422 selfloop transitions, 135 changer transitions 0/565 dead transitions. [2024-06-27 22:35:31,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 565 transitions, 12839 flow [2024-06-27 22:35:31,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:31,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:35:31,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 22:35:31,832 INFO L175 Difference]: Start difference. First operand has 331 places, 535 transitions, 11486 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:35:31,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 565 transitions, 12839 flow [2024-06-27 22:35:32,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 565 transitions, 12533 flow, removed 118 selfloop flow, removed 4 redundant places. [2024-06-27 22:35:32,548 INFO L231 Difference]: Finished difference. Result has 337 places, 539 transitions, 11590 flow [2024-06-27 22:35:32,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11192, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11590, PETRI_PLACES=337, PETRI_TRANSITIONS=539} [2024-06-27 22:35:32,549 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-06-27 22:35:32,549 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 539 transitions, 11590 flow [2024-06-27 22:35:32,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:35:32,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:32,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:32,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:35:32,549 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:32,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:32,550 INFO L85 PathProgramCache]: Analyzing trace with hash -649801213, now seen corresponding path program 16 times [2024-06-27 22:35:32,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:32,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254242181] [2024-06-27 22:35:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:32,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:34,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:34,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254242181] [2024-06-27 22:35:34,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254242181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:34,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:34,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:34,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991255212] [2024-06-27 22:35:34,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:34,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:34,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:34,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:34,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:35,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:35,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 539 transitions, 11590 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:35,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:35,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:35,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:36,429 INFO L124 PetriNetUnfolderBase]: 1663/3253 cut-off events. [2024-06-27 22:35:36,430 INFO L125 PetriNetUnfolderBase]: For 132369/132369 co-relation queries the response was YES. [2024-06-27 22:35:36,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30402 conditions, 3253 events. 1663/3253 cut-off events. For 132369/132369 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22960 event pairs, 192 based on Foata normal form. 1/3131 useless extension candidates. Maximal degree in co-relation 30238. Up to 2424 conditions per place. [2024-06-27 22:35:36,474 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 436 selfloop transitions, 129 changer transitions 0/573 dead transitions. [2024-06-27 22:35:36,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 573 transitions, 13022 flow [2024-06-27 22:35:36,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:35:36,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:35:36,475 INFO L175 Difference]: Start difference. First operand has 337 places, 539 transitions, 11590 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:35:36,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 573 transitions, 13022 flow [2024-06-27 22:35:37,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 573 transitions, 12564 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-27 22:35:37,252 INFO L231 Difference]: Finished difference. Result has 339 places, 545 transitions, 11605 flow [2024-06-27 22:35:37,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11144, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11605, PETRI_PLACES=339, PETRI_TRANSITIONS=545} [2024-06-27 22:35:37,253 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 298 predicate places. [2024-06-27 22:35:37,253 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 545 transitions, 11605 flow [2024-06-27 22:35:37,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:37,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:37,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:37,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:35:37,254 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:37,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:37,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2098756271, now seen corresponding path program 1 times [2024-06-27 22:35:37,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:37,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322828261] [2024-06-27 22:35:37,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:37,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:37,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:37,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322828261] [2024-06-27 22:35:37,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322828261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:37,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:37,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:35:37,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357006715] [2024-06-27 22:35:37,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:37,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:35:37,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:37,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:35:37,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:35:37,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 22:35:37,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 545 transitions, 11605 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:37,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:37,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 22:35:37,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:37,802 INFO L124 PetriNetUnfolderBase]: 838/1680 cut-off events. [2024-06-27 22:35:37,802 INFO L125 PetriNetUnfolderBase]: For 72205/72243 co-relation queries the response was YES. [2024-06-27 22:35:37,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17051 conditions, 1680 events. 838/1680 cut-off events. For 72205/72243 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10547 event pairs, 193 based on Foata normal form. 139/1747 useless extension candidates. Maximal degree in co-relation 16886. Up to 593 conditions per place. [2024-06-27 22:35:37,831 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 138 selfloop transitions, 86 changer transitions 0/321 dead transitions. [2024-06-27 22:35:37,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 321 transitions, 7522 flow [2024-06-27 22:35:37,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:35:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:35:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-27 22:35:37,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6959459459459459 [2024-06-27 22:35:37,833 INFO L175 Difference]: Start difference. First operand has 339 places, 545 transitions, 11605 flow. Second operand 4 states and 103 transitions. [2024-06-27 22:35:37,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 321 transitions, 7522 flow [2024-06-27 22:35:38,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 321 transitions, 4782 flow, removed 196 selfloop flow, removed 90 redundant places. [2024-06-27 22:35:38,194 INFO L231 Difference]: Finished difference. Result has 254 places, 309 transitions, 4564 flow [2024-06-27 22:35:38,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4170, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4564, PETRI_PLACES=254, PETRI_TRANSITIONS=309} [2024-06-27 22:35:38,194 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-27 22:35:38,194 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 309 transitions, 4564 flow [2024-06-27 22:35:38,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:38,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:38,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:38,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:35:38,195 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:38,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:38,195 INFO L85 PathProgramCache]: Analyzing trace with hash -135348374, now seen corresponding path program 1 times [2024-06-27 22:35:38,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:38,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39072746] [2024-06-27 22:35:38,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:38,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:39,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:39,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39072746] [2024-06-27 22:35:39,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39072746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:39,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:39,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:39,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227205712] [2024-06-27 22:35:39,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:39,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:39,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:39,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:39,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:39,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:39,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 309 transitions, 4564 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:39,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:39,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:39,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:40,682 INFO L124 PetriNetUnfolderBase]: 880/1613 cut-off events. [2024-06-27 22:35:40,682 INFO L125 PetriNetUnfolderBase]: For 82278/82278 co-relation queries the response was YES. [2024-06-27 22:35:40,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13236 conditions, 1613 events. 880/1613 cut-off events. For 82278/82278 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8843 event pairs, 78 based on Foata normal form. 2/1500 useless extension candidates. Maximal degree in co-relation 13111. Up to 1326 conditions per place. [2024-06-27 22:35:40,698 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 256 selfloop transitions, 62 changer transitions 0/327 dead transitions. [2024-06-27 22:35:40,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 327 transitions, 5320 flow [2024-06-27 22:35:40,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:35:40,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:35:40,699 INFO L175 Difference]: Start difference. First operand has 254 places, 309 transitions, 4564 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:35:40,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 327 transitions, 5320 flow [2024-06-27 22:35:41,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 327 transitions, 5286 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 22:35:41,005 INFO L231 Difference]: Finished difference. Result has 260 places, 311 transitions, 4711 flow [2024-06-27 22:35:41,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4530, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4711, PETRI_PLACES=260, PETRI_TRANSITIONS=311} [2024-06-27 22:35:41,006 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-27 22:35:41,006 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 311 transitions, 4711 flow [2024-06-27 22:35:41,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:41,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:41,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:41,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:35:41,007 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:41,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:41,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1263158442, now seen corresponding path program 2 times [2024-06-27 22:35:41,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:41,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524851332] [2024-06-27 22:35:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:41,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:42,166 INFO 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 22:35:42,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:42,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524851332] [2024-06-27 22:35:42,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524851332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:42,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:42,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:42,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882369629] [2024-06-27 22:35:42,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:42,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:42,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:42,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:42,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:42,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:42,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 311 transitions, 4711 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:42,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:42,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:42,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:42,910 INFO L124 PetriNetUnfolderBase]: 893/1632 cut-off events. [2024-06-27 22:35:42,910 INFO L125 PetriNetUnfolderBase]: For 86064/86064 co-relation queries the response was YES. [2024-06-27 22:35:42,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13617 conditions, 1632 events. 893/1632 cut-off events. For 86064/86064 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8960 event pairs, 85 based on Foata normal form. 2/1519 useless extension candidates. Maximal degree in co-relation 13489. Up to 1361 conditions per place. [2024-06-27 22:35:42,925 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 268 selfloop transitions, 52 changer transitions 0/329 dead transitions. [2024-06-27 22:35:42,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 329 transitions, 5469 flow [2024-06-27 22:35:42,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:42,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:42,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:35:42,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 22:35:42,926 INFO L175 Difference]: Start difference. First operand has 260 places, 311 transitions, 4711 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:35:42,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 329 transitions, 5469 flow [2024-06-27 22:35:43,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 329 transitions, 5308 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:43,177 INFO L231 Difference]: Finished difference. Result has 262 places, 313 transitions, 4716 flow [2024-06-27 22:35:43,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4550, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4716, PETRI_PLACES=262, PETRI_TRANSITIONS=313} [2024-06-27 22:35:43,177 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-06-27 22:35:43,178 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 313 transitions, 4716 flow [2024-06-27 22:35:43,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:43,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:43,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:43,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:35:43,178 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:43,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:43,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2109270698, now seen corresponding path program 3 times [2024-06-27 22:35:43,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:43,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867957007] [2024-06-27 22:35:43,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:43,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:44,249 INFO 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 22:35:44,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:44,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867957007] [2024-06-27 22:35:44,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867957007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:44,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:44,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:44,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93224333] [2024-06-27 22:35:44,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:44,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:44,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:44,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:44,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:44,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:44,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 313 transitions, 4716 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:44,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:44,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:44,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:45,065 INFO L124 PetriNetUnfolderBase]: 920/1680 cut-off events. [2024-06-27 22:35:45,066 INFO L125 PetriNetUnfolderBase]: For 86721/86721 co-relation queries the response was YES. [2024-06-27 22:35:45,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13864 conditions, 1680 events. 920/1680 cut-off events. For 86721/86721 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9367 event pairs, 109 based on Foata normal form. 2/1567 useless extension candidates. Maximal degree in co-relation 13735. Up to 1393 conditions per place. [2024-06-27 22:35:45,083 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 281 selfloop transitions, 46 changer transitions 0/336 dead transitions. [2024-06-27 22:35:45,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 336 transitions, 5534 flow [2024-06-27 22:35:45,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:45,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:45,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:35:45,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 22:35:45,084 INFO L175 Difference]: Start difference. First operand has 262 places, 313 transitions, 4716 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:35:45,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 336 transitions, 5534 flow [2024-06-27 22:35:45,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 336 transitions, 5390 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:45,363 INFO L231 Difference]: Finished difference. Result has 265 places, 317 transitions, 4765 flow [2024-06-27 22:35:45,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4572, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4765, PETRI_PLACES=265, PETRI_TRANSITIONS=317} [2024-06-27 22:35:45,364 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 224 predicate places. [2024-06-27 22:35:45,364 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 317 transitions, 4765 flow [2024-06-27 22:35:45,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:45,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:45,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:45,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:35:45,365 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:45,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:45,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1378956458, now seen corresponding path program 1 times [2024-06-27 22:35:45,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:45,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268802196] [2024-06-27 22:35:45,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:45,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:47,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:47,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268802196] [2024-06-27 22:35:47,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268802196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:47,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:47,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:35:47,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200051171] [2024-06-27 22:35:47,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:47,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:35:47,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:47,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:35:47,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:35:47,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:35:47,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 317 transitions, 4765 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:47,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:47,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:35:47,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:48,921 INFO L124 PetriNetUnfolderBase]: 771/1497 cut-off events. [2024-06-27 22:35:48,921 INFO L125 PetriNetUnfolderBase]: For 89393/89412 co-relation queries the response was YES. [2024-06-27 22:35:48,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12375 conditions, 1497 events. 771/1497 cut-off events. For 89393/89412 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8583 event pairs, 91 based on Foata normal form. 8/1369 useless extension candidates. Maximal degree in co-relation 12244. Up to 1106 conditions per place. [2024-06-27 22:35:48,935 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 219 selfloop transitions, 101 changer transitions 0/337 dead transitions. [2024-06-27 22:35:48,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 337 transitions, 5694 flow [2024-06-27 22:35:48,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:48,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:48,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:35:48,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:35:48,936 INFO L175 Difference]: Start difference. First operand has 265 places, 317 transitions, 4765 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:35:48,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 337 transitions, 5694 flow [2024-06-27 22:35:49,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 337 transitions, 5568 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 22:35:49,202 INFO L231 Difference]: Finished difference. Result has 270 places, 323 transitions, 4990 flow [2024-06-27 22:35:49,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4639, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4990, PETRI_PLACES=270, PETRI_TRANSITIONS=323} [2024-06-27 22:35:49,203 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-27 22:35:49,203 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 323 transitions, 4990 flow [2024-06-27 22:35:49,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:49,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:49,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:49,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:35:49,203 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:49,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:49,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2066409776, now seen corresponding path program 2 times [2024-06-27 22:35:49,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:49,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019212304] [2024-06-27 22:35:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:49,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:51,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:51,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019212304] [2024-06-27 22:35:51,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019212304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:51,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:51,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:51,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248745405] [2024-06-27 22:35:51,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:51,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:51,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:51,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:51,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:35:51,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 323 transitions, 4990 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:51,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:51,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:35:51,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:52,613 INFO L124 PetriNetUnfolderBase]: 788/1505 cut-off events. [2024-06-27 22:35:52,613 INFO L125 PetriNetUnfolderBase]: For 94656/94671 co-relation queries the response was YES. [2024-06-27 22:35:52,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12827 conditions, 1505 events. 788/1505 cut-off events. For 94656/94671 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8631 event pairs, 118 based on Foata normal form. 9/1373 useless extension candidates. Maximal degree in co-relation 12694. Up to 1074 conditions per place. [2024-06-27 22:35:52,627 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 200 selfloop transitions, 124 changer transitions 0/342 dead transitions. [2024-06-27 22:35:52,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 342 transitions, 5940 flow [2024-06-27 22:35:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:52,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:35:52,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 22:35:52,629 INFO L175 Difference]: Start difference. First operand has 270 places, 323 transitions, 4990 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:35:52,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 342 transitions, 5940 flow [2024-06-27 22:35:52,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 342 transitions, 5787 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 22:35:52,914 INFO L231 Difference]: Finished difference. Result has 274 places, 327 transitions, 5197 flow [2024-06-27 22:35:52,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4837, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5197, PETRI_PLACES=274, PETRI_TRANSITIONS=327} [2024-06-27 22:35:52,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-27 22:35:52,915 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 327 transitions, 5197 flow [2024-06-27 22:35:52,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:52,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:52,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:52,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:35:52,916 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:52,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:52,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1873280214, now seen corresponding path program 4 times [2024-06-27 22:35:52,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:52,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217262948] [2024-06-27 22:35:52,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:52,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:54,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:54,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217262948] [2024-06-27 22:35:54,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217262948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:54,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:54,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:54,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236869432] [2024-06-27 22:35:54,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:54,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:54,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:54,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:54,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:54,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:54,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 327 transitions, 5197 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:54,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:54,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:54,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:54,969 INFO L124 PetriNetUnfolderBase]: 967/1764 cut-off events. [2024-06-27 22:35:54,969 INFO L125 PetriNetUnfolderBase]: For 99414/99414 co-relation queries the response was YES. [2024-06-27 22:35:54,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15058 conditions, 1764 events. 967/1764 cut-off events. For 99414/99414 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9925 event pairs, 118 based on Foata normal form. 2/1644 useless extension candidates. Maximal degree in co-relation 14923. Up to 1455 conditions per place. [2024-06-27 22:35:54,985 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 267 selfloop transitions, 69 changer transitions 0/345 dead transitions. [2024-06-27 22:35:54,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 345 transitions, 6007 flow [2024-06-27 22:35:54,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:54,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 22:35:54,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 22:35:54,986 INFO L175 Difference]: Start difference. First operand has 274 places, 327 transitions, 5197 flow. Second operand 10 states and 165 transitions. [2024-06-27 22:35:54,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 345 transitions, 6007 flow [2024-06-27 22:35:55,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 345 transitions, 5807 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 22:35:55,329 INFO L231 Difference]: Finished difference. Result has 279 places, 329 transitions, 5203 flow [2024-06-27 22:35:55,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4997, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5203, PETRI_PLACES=279, PETRI_TRANSITIONS=329} [2024-06-27 22:35:55,329 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-27 22:35:55,329 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 329 transitions, 5203 flow [2024-06-27 22:35:55,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:55,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:55,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:55,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:35:55,329 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:55,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:55,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1865922612, now seen corresponding path program 3 times [2024-06-27 22:35:55,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:55,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789616120] [2024-06-27 22:35:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:55,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:57,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:57,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:57,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789616120] [2024-06-27 22:35:57,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789616120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:57,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:57,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:57,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057886842] [2024-06-27 22:35:57,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:57,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:57,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:57,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:57,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:57,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:35:57,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 329 transitions, 5203 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 22:35:57,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:57,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:35:57,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:58,486 INFO L124 PetriNetUnfolderBase]: 855/1635 cut-off events. [2024-06-27 22:35:58,486 INFO L125 PetriNetUnfolderBase]: For 116559/116574 co-relation queries the response was YES. [2024-06-27 22:35:58,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14627 conditions, 1635 events. 855/1635 cut-off events. For 116559/116574 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9436 event pairs, 95 based on Foata normal form. 8/1477 useless extension candidates. Maximal degree in co-relation 14489. Up to 1009 conditions per place. [2024-06-27 22:35:58,502 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 187 selfloop transitions, 149 changer transitions 0/353 dead transitions. [2024-06-27 22:35:58,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 353 transitions, 6617 flow [2024-06-27 22:35:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:58,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:58,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:35:58,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:35:58,503 INFO L175 Difference]: Start difference. First operand has 279 places, 329 transitions, 5203 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:35:58,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 353 transitions, 6617 flow [2024-06-27 22:35:58,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 353 transitions, 6429 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:58,877 INFO L231 Difference]: Finished difference. Result has 282 places, 338 transitions, 5561 flow [2024-06-27 22:35:58,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5015, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5561, PETRI_PLACES=282, PETRI_TRANSITIONS=338} [2024-06-27 22:35:58,877 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 241 predicate places. [2024-06-27 22:35:58,877 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 338 transitions, 5561 flow [2024-06-27 22:35:58,878 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 22:35:58,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:58,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:58,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:35:58,878 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:58,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1580053427, now seen corresponding path program 1 times [2024-06-27 22:35:58,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:58,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234629416] [2024-06-27 22:35:58,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:58,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:01,404 INFO 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 22:36:01,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:01,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234629416] [2024-06-27 22:36:01,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234629416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:01,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:01,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:01,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462348970] [2024-06-27 22:36:01,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:01,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:01,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:01,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:01,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:01,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:36:01,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 338 transitions, 5561 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:01,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:01,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:36:01,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:02,104 INFO L124 PetriNetUnfolderBase]: 866/1632 cut-off events. [2024-06-27 22:36:02,104 INFO L125 PetriNetUnfolderBase]: For 119183/119198 co-relation queries the response was YES. [2024-06-27 22:36:02,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15047 conditions, 1632 events. 866/1632 cut-off events. For 119183/119198 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 9439 event pairs, 120 based on Foata normal form. 8/1475 useless extension candidates. Maximal degree in co-relation 14907. Up to 1154 conditions per place. [2024-06-27 22:36:02,122 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 202 selfloop transitions, 132 changer transitions 0/351 dead transitions. [2024-06-27 22:36:02,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 351 transitions, 6310 flow [2024-06-27 22:36:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:02,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:36:02,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:36:02,123 INFO L175 Difference]: Start difference. First operand has 282 places, 338 transitions, 5561 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:36:02,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 351 transitions, 6310 flow [2024-06-27 22:36:02,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 351 transitions, 5976 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:02,553 INFO L231 Difference]: Finished difference. Result has 285 places, 340 transitions, 5555 flow [2024-06-27 22:36:02,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5235, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5555, PETRI_PLACES=285, PETRI_TRANSITIONS=340} [2024-06-27 22:36:02,553 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-27 22:36:02,553 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 340 transitions, 5555 flow [2024-06-27 22:36:02,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:02,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:02,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:02,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:36:02,554 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:02,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:02,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1580053148, now seen corresponding path program 4 times [2024-06-27 22:36:02,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:02,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456633311] [2024-06-27 22:36:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:02,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:04,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:04,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456633311] [2024-06-27 22:36:04,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456633311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:04,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:04,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:04,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137948629] [2024-06-27 22:36:04,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:04,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:04,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:04,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:04,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:04,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:36:04,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 340 transitions, 5555 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:04,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:04,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:36:04,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:05,443 INFO L124 PetriNetUnfolderBase]: 890/1673 cut-off events. [2024-06-27 22:36:05,443 INFO L125 PetriNetUnfolderBase]: For 127304/127319 co-relation queries the response was YES. [2024-06-27 22:36:05,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15224 conditions, 1673 events. 890/1673 cut-off events. For 127304/127319 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 9698 event pairs, 122 based on Foata normal form. 9/1507 useless extension candidates. Maximal degree in co-relation 15085. Up to 1047 conditions per place. [2024-06-27 22:36:05,459 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 191 selfloop transitions, 152 changer transitions 0/360 dead transitions. [2024-06-27 22:36:05,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 360 transitions, 6886 flow [2024-06-27 22:36:05,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:05,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:05,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:36:05,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 22:36:05,460 INFO L175 Difference]: Start difference. First operand has 285 places, 340 transitions, 5555 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:36:05,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 360 transitions, 6886 flow [2024-06-27 22:36:05,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 360 transitions, 6595 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:05,891 INFO L231 Difference]: Finished difference. Result has 287 places, 345 transitions, 5682 flow [2024-06-27 22:36:05,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5264, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5682, PETRI_PLACES=287, PETRI_TRANSITIONS=345} [2024-06-27 22:36:05,892 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-27 22:36:05,892 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 345 transitions, 5682 flow [2024-06-27 22:36:05,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:05,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:05,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:05,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:36:05,892 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:05,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:05,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1499852636, now seen corresponding path program 5 times [2024-06-27 22:36:05,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:05,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96265819] [2024-06-27 22:36:05,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:05,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:07,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:07,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96265819] [2024-06-27 22:36:07,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96265819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:07,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:07,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:07,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549409920] [2024-06-27 22:36:07,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:07,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:07,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:07,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:07,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:08,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:36:08,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 345 transitions, 5682 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:08,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:08,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:36:08,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:08,996 INFO L124 PetriNetUnfolderBase]: 901/1711 cut-off events. [2024-06-27 22:36:08,996 INFO L125 PetriNetUnfolderBase]: For 134008/134023 co-relation queries the response was YES. [2024-06-27 22:36:09,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15760 conditions, 1711 events. 901/1711 cut-off events. For 134008/134023 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9916 event pairs, 96 based on Foata normal form. 8/1535 useless extension candidates. Maximal degree in co-relation 15620. Up to 1272 conditions per place. [2024-06-27 22:36:09,013 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 236 selfloop transitions, 111 changer transitions 0/364 dead transitions. [2024-06-27 22:36:09,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 364 transitions, 6876 flow [2024-06-27 22:36:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:36:09,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:36:09,014 INFO L175 Difference]: Start difference. First operand has 287 places, 345 transitions, 5682 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:36:09,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 364 transitions, 6876 flow [2024-06-27 22:36:09,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 364 transitions, 6567 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 22:36:09,467 INFO L231 Difference]: Finished difference. Result has 291 places, 350 transitions, 5730 flow [2024-06-27 22:36:09,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5379, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5730, PETRI_PLACES=291, PETRI_TRANSITIONS=350} [2024-06-27 22:36:09,468 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-27 22:36:09,468 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 350 transitions, 5730 flow [2024-06-27 22:36:09,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:09,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:09,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:09,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:36:09,469 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:09,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:09,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1499845196, now seen corresponding path program 6 times [2024-06-27 22:36:09,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:09,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498272799] [2024-06-27 22:36:09,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:09,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:11,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:11,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498272799] [2024-06-27 22:36:11,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498272799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:11,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:11,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:11,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582397689] [2024-06-27 22:36:11,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:11,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:11,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:11,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:11,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:11,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:36:11,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 350 transitions, 5730 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:11,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:11,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:36:11,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:12,540 INFO L124 PetriNetUnfolderBase]: 899/1707 cut-off events. [2024-06-27 22:36:12,541 INFO L125 PetriNetUnfolderBase]: For 131327/131342 co-relation queries the response was YES. [2024-06-27 22:36:12,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15319 conditions, 1707 events. 899/1707 cut-off events. For 131327/131342 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9892 event pairs, 94 based on Foata normal form. 9/1532 useless extension candidates. Maximal degree in co-relation 15178. Up to 1269 conditions per place. [2024-06-27 22:36:12,558 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 233 selfloop transitions, 113 changer transitions 0/363 dead transitions. [2024-06-27 22:36:12,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 363 transitions, 6630 flow [2024-06-27 22:36:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:12,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:36:12,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:36:12,560 INFO L175 Difference]: Start difference. First operand has 291 places, 350 transitions, 5730 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:36:12,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 363 transitions, 6630 flow [2024-06-27 22:36:13,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 363 transitions, 6286 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:13,052 INFO L231 Difference]: Finished difference. Result has 294 places, 350 transitions, 5619 flow [2024-06-27 22:36:13,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5386, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5619, PETRI_PLACES=294, PETRI_TRANSITIONS=350} [2024-06-27 22:36:13,052 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-27 22:36:13,052 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 350 transitions, 5619 flow [2024-06-27 22:36:13,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:13,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:13,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:13,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:36:13,053 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:13,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:13,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1580322538, now seen corresponding path program 1 times [2024-06-27 22:36:13,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:13,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68355134] [2024-06-27 22:36:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:13,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:14,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:14,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:14,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68355134] [2024-06-27 22:36:14,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68355134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:14,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:14,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:14,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111754011] [2024-06-27 22:36:14,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:14,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:14,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:14,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:14,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:14,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:36:14,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 350 transitions, 5619 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:14,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:14,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:36:14,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:15,649 INFO L124 PetriNetUnfolderBase]: 916/1735 cut-off events. [2024-06-27 22:36:15,649 INFO L125 PetriNetUnfolderBase]: For 132092/132111 co-relation queries the response was YES. [2024-06-27 22:36:15,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15351 conditions, 1735 events. 916/1735 cut-off events. For 132092/132111 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10225 event pairs, 142 based on Foata normal form. 3/1555 useless extension candidates. Maximal degree in co-relation 15209. Up to 1437 conditions per place. [2024-06-27 22:36:15,666 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 321 selfloop transitions, 28 changer transitions 0/366 dead transitions. [2024-06-27 22:36:15,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 366 transitions, 6409 flow [2024-06-27 22:36:15,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:36:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:36:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 22:36:15,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45645645645645644 [2024-06-27 22:36:15,667 INFO L175 Difference]: Start difference. First operand has 294 places, 350 transitions, 5619 flow. Second operand 9 states and 152 transitions. [2024-06-27 22:36:15,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 366 transitions, 6409 flow [2024-06-27 22:36:16,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 366 transitions, 6184 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:16,106 INFO L231 Difference]: Finished difference. Result has 295 places, 351 transitions, 5482 flow [2024-06-27 22:36:16,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5394, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5482, PETRI_PLACES=295, PETRI_TRANSITIONS=351} [2024-06-27 22:36:16,106 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-27 22:36:16,106 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 351 transitions, 5482 flow [2024-06-27 22:36:16,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:16,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:16,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:16,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:36:16,106 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:16,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:16,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1865646123, now seen corresponding path program 2 times [2024-06-27 22:36:16,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:16,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054586810] [2024-06-27 22:36:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:16,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:17,968 INFO 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 22:36:17,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:17,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054586810] [2024-06-27 22:36:17,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054586810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:17,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:17,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:17,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096097387] [2024-06-27 22:36:17,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:17,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:17,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:17,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:18,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:36:18,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 351 transitions, 5482 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:18,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:18,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:36:18,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:18,626 INFO L124 PetriNetUnfolderBase]: 920/1754 cut-off events. [2024-06-27 22:36:18,626 INFO L125 PetriNetUnfolderBase]: For 131779/131794 co-relation queries the response was YES. [2024-06-27 22:36:18,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15325 conditions, 1754 events. 920/1754 cut-off events. For 131779/131794 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 10262 event pairs, 107 based on Foata normal form. 8/1572 useless extension candidates. Maximal degree in co-relation 15183. Up to 1207 conditions per place. [2024-06-27 22:36:18,644 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 188 selfloop transitions, 160 changer transitions 0/365 dead transitions. [2024-06-27 22:36:18,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 365 transitions, 6430 flow [2024-06-27 22:36:18,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:36:18,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:36:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:36:18,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 22:36:18,645 INFO L175 Difference]: Start difference. First operand has 295 places, 351 transitions, 5482 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:36:18,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 365 transitions, 6430 flow [2024-06-27 22:36:19,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 365 transitions, 6356 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:19,131 INFO L231 Difference]: Finished difference. Result has 297 places, 353 transitions, 5785 flow [2024-06-27 22:36:19,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5408, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5785, PETRI_PLACES=297, PETRI_TRANSITIONS=353} [2024-06-27 22:36:19,131 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-27 22:36:19,131 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 353 transitions, 5785 flow [2024-06-27 22:36:19,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:19,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:19,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:19,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:36:19,132 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:19,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:19,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1865655702, now seen corresponding path program 7 times [2024-06-27 22:36:19,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:19,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715588972] [2024-06-27 22:36:19,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:19,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:21,042 INFO 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 22:36:21,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:21,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715588972] [2024-06-27 22:36:21,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715588972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:21,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:21,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:21,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813106749] [2024-06-27 22:36:21,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:21,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:21,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:21,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:21,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:21,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:36:21,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 353 transitions, 5785 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:21,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:21,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:36:21,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:21,945 INFO L124 PetriNetUnfolderBase]: 922/1740 cut-off events. [2024-06-27 22:36:21,945 INFO L125 PetriNetUnfolderBase]: For 129068/129083 co-relation queries the response was YES. [2024-06-27 22:36:21,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15362 conditions, 1740 events. 922/1740 cut-off events. For 129068/129083 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 10179 event pairs, 131 based on Foata normal form. 9/1562 useless extension candidates. Maximal degree in co-relation 15219. Up to 1096 conditions per place. [2024-06-27 22:36:21,962 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 166 selfloop transitions, 183 changer transitions 0/366 dead transitions. [2024-06-27 22:36:21,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 366 transitions, 6861 flow [2024-06-27 22:36:21,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:36:21,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:36:21,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:36:21,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:36:21,963 INFO L175 Difference]: Start difference. First operand has 297 places, 353 transitions, 5785 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:36:21,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 366 transitions, 6861 flow [2024-06-27 22:36:22,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 366 transitions, 6354 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:22,446 INFO L231 Difference]: Finished difference. Result has 298 places, 353 transitions, 5652 flow [2024-06-27 22:36:22,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5278, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5652, PETRI_PLACES=298, PETRI_TRANSITIONS=353} [2024-06-27 22:36:22,446 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-27 22:36:22,446 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 353 transitions, 5652 flow [2024-06-27 22:36:22,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:22,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:22,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:22,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:36:22,447 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:22,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1865655423, now seen corresponding path program 3 times [2024-06-27 22:36:22,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:22,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125548794] [2024-06-27 22:36:22,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:22,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:24,184 INFO 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 22:36:24,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:24,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125548794] [2024-06-27 22:36:24,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125548794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:24,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:24,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:24,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202473376] [2024-06-27 22:36:24,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:24,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:24,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:24,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:24,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:24,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:36:24,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 353 transitions, 5652 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:24,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:24,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:36:24,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:24,814 INFO L124 PetriNetUnfolderBase]: 915/1742 cut-off events. [2024-06-27 22:36:24,815 INFO L125 PetriNetUnfolderBase]: For 124340/124355 co-relation queries the response was YES. [2024-06-27 22:36:24,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15103 conditions, 1742 events. 915/1742 cut-off events. For 124340/124355 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 10160 event pairs, 96 based on Foata normal form. 8/1561 useless extension candidates. Maximal degree in co-relation 14961. Up to 1228 conditions per place. [2024-06-27 22:36:24,831 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 197 selfloop transitions, 149 changer transitions 0/364 dead transitions. [2024-06-27 22:36:24,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 364 transitions, 6370 flow [2024-06-27 22:36:24,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:36:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:36:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:36:24,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 22:36:24,832 INFO L175 Difference]: Start difference. First operand has 298 places, 353 transitions, 5652 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:36:24,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 364 transitions, 6370 flow [2024-06-27 22:36:25,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 364 transitions, 5952 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:25,373 INFO L231 Difference]: Finished difference. Result has 299 places, 353 transitions, 5537 flow [2024-06-27 22:36:25,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5234, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5537, PETRI_PLACES=299, PETRI_TRANSITIONS=353} [2024-06-27 22:36:25,374 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-27 22:36:25,374 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 353 transitions, 5537 flow [2024-06-27 22:36:25,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:25,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:25,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:25,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:36:25,374 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:25,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:25,374 INFO L85 PathProgramCache]: Analyzing trace with hash 716397866, now seen corresponding path program 5 times [2024-06-27 22:36:25,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:25,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655860761] [2024-06-27 22:36:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:25,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:26,669 INFO 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 22:36:26,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:26,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655860761] [2024-06-27 22:36:26,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655860761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:26,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:26,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:26,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438739668] [2024-06-27 22:36:26,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:26,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:26,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:26,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:26,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:26,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:36:26,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 353 transitions, 5537 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:26,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:26,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:36:26,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:27,575 INFO L124 PetriNetUnfolderBase]: 1085/1974 cut-off events. [2024-06-27 22:36:27,576 INFO L125 PetriNetUnfolderBase]: For 130573/130573 co-relation queries the response was YES. [2024-06-27 22:36:27,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16866 conditions, 1974 events. 1085/1974 cut-off events. For 130573/130573 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 11388 event pairs, 134 based on Foata normal form. 2/1832 useless extension candidates. Maximal degree in co-relation 16722. Up to 1565 conditions per place. [2024-06-27 22:36:27,594 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 266 selfloop transitions, 96 changer transitions 0/371 dead transitions. [2024-06-27 22:36:27,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 371 transitions, 6409 flow [2024-06-27 22:36:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:36:27,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 22:36:27,595 INFO L175 Difference]: Start difference. First operand has 299 places, 353 transitions, 5537 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:36:27,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 371 transitions, 6409 flow [2024-06-27 22:36:28,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 371 transitions, 6102 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:28,190 INFO L231 Difference]: Finished difference. Result has 302 places, 355 transitions, 5493 flow [2024-06-27 22:36:28,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5230, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5493, PETRI_PLACES=302, PETRI_TRANSITIONS=355} [2024-06-27 22:36:28,190 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-27 22:36:28,190 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 355 transitions, 5493 flow [2024-06-27 22:36:28,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:28,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:28,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:28,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:36:28,190 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:28,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:28,191 INFO L85 PathProgramCache]: Analyzing trace with hash 439312820, now seen corresponding path program 8 times [2024-06-27 22:36:28,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:28,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352348013] [2024-06-27 22:36:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:28,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:31,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:31,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352348013] [2024-06-27 22:36:31,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352348013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:31,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:31,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:31,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784873568] [2024-06-27 22:36:31,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:31,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:31,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:31,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:31,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:31,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:36:31,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 355 transitions, 5493 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:31,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:31,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:36:31,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:32,885 INFO L124 PetriNetUnfolderBase]: 954/1795 cut-off events. [2024-06-27 22:36:32,886 INFO L125 PetriNetUnfolderBase]: For 142258/142273 co-relation queries the response was YES. [2024-06-27 22:36:32,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15767 conditions, 1795 events. 954/1795 cut-off events. For 142258/142273 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 10556 event pairs, 142 based on Foata normal form. 10/1607 useless extension candidates. Maximal degree in co-relation 15622. Up to 960 conditions per place. [2024-06-27 22:36:32,904 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 174 selfloop transitions, 184 changer transitions 0/376 dead transitions. [2024-06-27 22:36:32,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 376 transitions, 6987 flow [2024-06-27 22:36:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:36:32,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:36:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 22:36:32,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255255255255256 [2024-06-27 22:36:32,905 INFO L175 Difference]: Start difference. First operand has 302 places, 355 transitions, 5493 flow. Second operand 9 states and 175 transitions. [2024-06-27 22:36:32,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 376 transitions, 6987 flow [2024-06-27 22:36:33,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 376 transitions, 6740 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:33,468 INFO L231 Difference]: Finished difference. Result has 304 places, 362 transitions, 5808 flow [2024-06-27 22:36:33,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5246, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5808, PETRI_PLACES=304, PETRI_TRANSITIONS=362} [2024-06-27 22:36:33,469 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-27 22:36:33,469 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 362 transitions, 5808 flow [2024-06-27 22:36:33,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:33,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:33,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:33,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:36:33,469 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:33,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:33,470 INFO L85 PathProgramCache]: Analyzing trace with hash 439320260, now seen corresponding path program 9 times [2024-06-27 22:36:33,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:33,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434576032] [2024-06-27 22:36:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:33,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:35,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:35,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434576032] [2024-06-27 22:36:35,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434576032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:35,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:35,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:35,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943749018] [2024-06-27 22:36:35,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:35,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:35,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:35,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:35,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:35,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:36:35,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 362 transitions, 5808 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:35,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:35,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:36:35,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:36,590 INFO L124 PetriNetUnfolderBase]: 982/1841 cut-off events. [2024-06-27 22:36:36,590 INFO L125 PetriNetUnfolderBase]: For 156303/156318 co-relation queries the response was YES. [2024-06-27 22:36:36,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16768 conditions, 1841 events. 982/1841 cut-off events. For 156303/156318 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 10863 event pairs, 141 based on Foata normal form. 11/1642 useless extension candidates. Maximal degree in co-relation 16621. Up to 991 conditions per place. [2024-06-27 22:36:36,609 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 179 selfloop transitions, 186 changer transitions 0/382 dead transitions. [2024-06-27 22:36:36,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 382 transitions, 7315 flow [2024-06-27 22:36:36,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:36,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:36:36,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 22:36:36,610 INFO L175 Difference]: Start difference. First operand has 304 places, 362 transitions, 5808 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:36:36,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 382 transitions, 7315 flow [2024-06-27 22:36:37,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 382 transitions, 6851 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-27 22:36:37,269 INFO L231 Difference]: Finished difference. Result has 309 places, 367 transitions, 5863 flow [2024-06-27 22:36:37,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5386, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5863, PETRI_PLACES=309, PETRI_TRANSITIONS=367} [2024-06-27 22:36:37,269 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-27 22:36:37,269 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 367 transitions, 5863 flow [2024-06-27 22:36:37,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:37,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:37,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:37,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:36:37,270 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:37,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:37,271 INFO L85 PathProgramCache]: Analyzing trace with hash 439589650, now seen corresponding path program 2 times [2024-06-27 22:36:37,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:37,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776488644] [2024-06-27 22:36:37,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:37,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:39,506 INFO 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 22:36:39,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:39,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776488644] [2024-06-27 22:36:39,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776488644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:39,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:39,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:39,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245449745] [2024-06-27 22:36:39,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:39,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:39,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:39,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:39,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:39,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:36:39,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 367 transitions, 5863 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:39,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:39,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:36:39,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:40,305 INFO L124 PetriNetUnfolderBase]: 988/1883 cut-off events. [2024-06-27 22:36:40,305 INFO L125 PetriNetUnfolderBase]: For 157848/157867 co-relation queries the response was YES. [2024-06-27 22:36:40,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16783 conditions, 1883 events. 988/1883 cut-off events. For 157848/157867 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 11189 event pairs, 109 based on Foata normal form. 7/1679 useless extension candidates. Maximal degree in co-relation 16635. Up to 1513 conditions per place. [2024-06-27 22:36:40,324 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 322 selfloop transitions, 42 changer transitions 0/381 dead transitions. [2024-06-27 22:36:40,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 381 transitions, 6681 flow [2024-06-27 22:36:40,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:40,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:40,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 22:36:40,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 22:36:40,326 INFO L175 Difference]: Start difference. First operand has 309 places, 367 transitions, 5863 flow. Second operand 10 states and 165 transitions. [2024-06-27 22:36:40,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 381 transitions, 6681 flow [2024-06-27 22:36:40,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 381 transitions, 6410 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 22:36:40,931 INFO L231 Difference]: Finished difference. Result has 314 places, 368 transitions, 5710 flow [2024-06-27 22:36:40,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5592, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5710, PETRI_PLACES=314, PETRI_TRANSITIONS=368} [2024-06-27 22:36:40,932 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 273 predicate places. [2024-06-27 22:36:40,932 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 368 transitions, 5710 flow [2024-06-27 22:36:40,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:40,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:40,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:40,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 22:36:40,932 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:40,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:40,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1285892906, now seen corresponding path program 3 times [2024-06-27 22:36:40,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:40,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300236568] [2024-06-27 22:36:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:40,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:44,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:44,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300236568] [2024-06-27 22:36:44,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300236568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:44,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:44,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:44,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770978447] [2024-06-27 22:36:44,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:44,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:44,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:44,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:44,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:44,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:36:44,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 368 transitions, 5710 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:44,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:44,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:36:44,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:45,090 INFO L124 PetriNetUnfolderBase]: 1179/2178 cut-off events. [2024-06-27 22:36:45,090 INFO L125 PetriNetUnfolderBase]: For 163599/163599 co-relation queries the response was YES. [2024-06-27 22:36:45,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18611 conditions, 2178 events. 1179/2178 cut-off events. For 163599/163599 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12908 event pairs, 170 based on Foata normal form. 2/2018 useless extension candidates. Maximal degree in co-relation 18462. Up to 1865 conditions per place. [2024-06-27 22:36:45,114 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 362 selfloop transitions, 19 changer transitions 0/390 dead transitions. [2024-06-27 22:36:45,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 390 transitions, 6647 flow [2024-06-27 22:36:45,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:45,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:45,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 22:36:45,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-27 22:36:45,116 INFO L175 Difference]: Start difference. First operand has 314 places, 368 transitions, 5710 flow. Second operand 10 states and 159 transitions. [2024-06-27 22:36:45,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 390 transitions, 6647 flow [2024-06-27 22:36:45,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 390 transitions, 6435 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:45,725 INFO L231 Difference]: Finished difference. Result has 316 places, 371 transitions, 5602 flow [2024-06-27 22:36:45,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5498, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5602, PETRI_PLACES=316, PETRI_TRANSITIONS=371} [2024-06-27 22:36:45,726 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-27 22:36:45,726 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 371 transitions, 5602 flow [2024-06-27 22:36:45,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:45,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:45,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:45,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 22:36:45,726 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:45,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:45,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1805872050, now seen corresponding path program 4 times [2024-06-27 22:36:45,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:45,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427942022] [2024-06-27 22:36:45,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:45,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:48,560 INFO 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 22:36:48,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:48,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427942022] [2024-06-27 22:36:48,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427942022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:48,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:48,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:48,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233165250] [2024-06-27 22:36:48,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:48,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:48,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:48,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:48,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:48,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:36:48,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 371 transitions, 5602 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:48,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:48,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:36:48,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:49,844 INFO L124 PetriNetUnfolderBase]: 1216/2261 cut-off events. [2024-06-27 22:36:49,844 INFO L125 PetriNetUnfolderBase]: For 176790/176790 co-relation queries the response was YES. [2024-06-27 22:36:49,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19276 conditions, 2261 events. 1216/2261 cut-off events. For 176790/176790 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 13565 event pairs, 167 based on Foata normal form. 2/2101 useless extension candidates. Maximal degree in co-relation 19125. Up to 1846 conditions per place. [2024-06-27 22:36:49,870 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 366 selfloop transitions, 26 changer transitions 0/401 dead transitions. [2024-06-27 22:36:49,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 401 transitions, 6828 flow [2024-06-27 22:36:49,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:36:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:36:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-27 22:36:49,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2024-06-27 22:36:49,871 INFO L175 Difference]: Start difference. First operand has 316 places, 371 transitions, 5602 flow. Second operand 12 states and 191 transitions. [2024-06-27 22:36:49,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 401 transitions, 6828 flow [2024-06-27 22:36:50,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 401 transitions, 6763 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:50,571 INFO L231 Difference]: Finished difference. Result has 321 places, 373 transitions, 5659 flow [2024-06-27 22:36:50,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5537, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5659, PETRI_PLACES=321, PETRI_TRANSITIONS=373} [2024-06-27 22:36:50,571 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-27 22:36:50,571 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 373 transitions, 5659 flow [2024-06-27 22:36:50,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:50,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:50,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:50,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 22:36:50,572 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:50,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:50,573 INFO L85 PathProgramCache]: Analyzing trace with hash 716403818, now seen corresponding path program 10 times [2024-06-27 22:36:50,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:50,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3070124] [2024-06-27 22:36:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:50,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:52,366 INFO 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 22:36:52,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:52,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3070124] [2024-06-27 22:36:52,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3070124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:52,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:52,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:52,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774582610] [2024-06-27 22:36:52,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:52,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:52,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:52,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:52,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:52,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:36:52,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 373 transitions, 5659 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:52,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:52,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:36:52,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:53,159 INFO L124 PetriNetUnfolderBase]: 1038/1999 cut-off events. [2024-06-27 22:36:53,159 INFO L125 PetriNetUnfolderBase]: For 167538/167550 co-relation queries the response was YES. [2024-06-27 22:36:53,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17073 conditions, 1999 events. 1038/1999 cut-off events. For 167538/167550 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 12166 event pairs, 137 based on Foata normal form. 7/1780 useless extension candidates. Maximal degree in co-relation 16921. Up to 1551 conditions per place. [2024-06-27 22:36:53,180 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 273 selfloop transitions, 94 changer transitions 0/384 dead transitions. [2024-06-27 22:36:53,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 384 transitions, 6458 flow [2024-06-27 22:36:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:36:53,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 22:36:53,181 INFO L175 Difference]: Start difference. First operand has 321 places, 373 transitions, 5659 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:36:53,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 384 transitions, 6458 flow [2024-06-27 22:36:53,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 384 transitions, 6380 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:53,831 INFO L231 Difference]: Finished difference. Result has 322 places, 375 transitions, 5823 flow [2024-06-27 22:36:53,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5581, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5823, PETRI_PLACES=322, PETRI_TRANSITIONS=375} [2024-06-27 22:36:53,832 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-06-27 22:36:53,832 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 375 transitions, 5823 flow [2024-06-27 22:36:53,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:53,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:53,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:53,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 22:36:53,833 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:53,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:53,833 INFO L85 PathProgramCache]: Analyzing trace with hash 972183756, now seen corresponding path program 11 times [2024-06-27 22:36:53,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:53,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565953004] [2024-06-27 22:36:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:53,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:56,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:56,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565953004] [2024-06-27 22:36:56,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565953004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:56,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:56,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:56,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534929024] [2024-06-27 22:36:56,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:56,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:56,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:56,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:56,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:56,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:36:56,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 375 transitions, 5823 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:56,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:56,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:36:56,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:57,121 INFO L124 PetriNetUnfolderBase]: 1059/2015 cut-off events. [2024-06-27 22:36:57,122 INFO L125 PetriNetUnfolderBase]: For 177405/177417 co-relation queries the response was YES. [2024-06-27 22:36:57,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17433 conditions, 2015 events. 1059/2015 cut-off events. For 177405/177417 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12274 event pairs, 162 based on Foata normal form. 9/1796 useless extension candidates. Maximal degree in co-relation 17280. Up to 1119 conditions per place. [2024-06-27 22:36:57,144 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 190 selfloop transitions, 190 changer transitions 0/397 dead transitions. [2024-06-27 22:36:57,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 397 transitions, 7578 flow [2024-06-27 22:36:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:36:57,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:36:57,145 INFO L175 Difference]: Start difference. First operand has 322 places, 375 transitions, 5823 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:36:57,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 397 transitions, 7578 flow [2024-06-27 22:36:57,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 397 transitions, 7359 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:57,932 INFO L231 Difference]: Finished difference. Result has 324 places, 380 transitions, 6095 flow [2024-06-27 22:36:57,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5604, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6095, PETRI_PLACES=324, PETRI_TRANSITIONS=380} [2024-06-27 22:36:57,933 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 283 predicate places. [2024-06-27 22:36:57,933 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 380 transitions, 6095 flow [2024-06-27 22:36:57,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:57,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:57,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:57,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 22:36:57,933 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:57,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:57,933 INFO L85 PathProgramCache]: Analyzing trace with hash 716613068, now seen corresponding path program 12 times [2024-06-27 22:36:57,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:57,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421358901] [2024-06-27 22:36:57,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:57,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:59,993 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 22:36:59,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:59,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421358901] [2024-06-27 22:36:59,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421358901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:59,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:59,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:59,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761740801] [2024-06-27 22:36:59,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:59,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:59,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:59,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:59,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:37:00,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:37:00,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 380 transitions, 6095 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:00,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:00,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:37:00,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:00,955 INFO L124 PetriNetUnfolderBase]: 1078/2064 cut-off events. [2024-06-27 22:37:00,955 INFO L125 PetriNetUnfolderBase]: For 195064/195076 co-relation queries the response was YES. [2024-06-27 22:37:00,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18480 conditions, 2064 events. 1078/2064 cut-off events. For 195064/195076 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 12598 event pairs, 135 based on Foata normal form. 8/1835 useless extension candidates. Maximal degree in co-relation 18326. Up to 1573 conditions per place. [2024-06-27 22:37:00,978 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 275 selfloop transitions, 104 changer transitions 0/396 dead transitions. [2024-06-27 22:37:00,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 396 transitions, 7229 flow [2024-06-27 22:37:00,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:37:00,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:37:00,979 INFO L175 Difference]: Start difference. First operand has 324 places, 380 transitions, 6095 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:37:00,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 396 transitions, 7229 flow [2024-06-27 22:37:01,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 396 transitions, 6945 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 22:37:01,814 INFO L231 Difference]: Finished difference. Result has 329 places, 385 transitions, 6167 flow [2024-06-27 22:37:01,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5815, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6167, PETRI_PLACES=329, PETRI_TRANSITIONS=385} [2024-06-27 22:37:01,814 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 288 predicate places. [2024-06-27 22:37:01,814 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 385 transitions, 6167 flow [2024-06-27 22:37:01,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:01,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:01,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:01,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 22:37:01,815 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:01,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:01,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1285882986, now seen corresponding path program 13 times [2024-06-27 22:37:01,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:01,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310764876] [2024-06-27 22:37:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:01,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:03,814 INFO 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 22:37:03,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:03,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310764876] [2024-06-27 22:37:03,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310764876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:03,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:03,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:03,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387005836] [2024-06-27 22:37:03,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:03,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:03,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:03,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:03,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:03,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:37:03,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 385 transitions, 6167 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:03,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:03,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:37:03,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:04,980 INFO L124 PetriNetUnfolderBase]: 1265/2335 cut-off events. [2024-06-27 22:37:04,981 INFO L125 PetriNetUnfolderBase]: For 191351/191351 co-relation queries the response was YES. [2024-06-27 22:37:04,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20217 conditions, 2335 events. 1265/2335 cut-off events. For 191351/191351 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14190 event pairs, 208 based on Foata normal form. 2/2163 useless extension candidates. Maximal degree in co-relation 20062. Up to 1980 conditions per place. [2024-06-27 22:37:05,005 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 364 selfloop transitions, 33 changer transitions 0/406 dead transitions. [2024-06-27 22:37:05,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 406 transitions, 7314 flow [2024-06-27 22:37:05,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:05,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:05,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 22:37:05,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:37:05,006 INFO L175 Difference]: Start difference. First operand has 329 places, 385 transitions, 6167 flow. Second operand 11 states and 176 transitions. [2024-06-27 22:37:05,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 406 transitions, 7314 flow [2024-06-27 22:37:06,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 406 transitions, 6982 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-27 22:37:06,009 INFO L231 Difference]: Finished difference. Result has 334 places, 389 transitions, 5978 flow [2024-06-27 22:37:06,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5835, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5978, PETRI_PLACES=334, PETRI_TRANSITIONS=389} [2024-06-27 22:37:06,010 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-27 22:37:06,010 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 389 transitions, 5978 flow [2024-06-27 22:37:06,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:06,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:06,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:06,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 22:37:06,010 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:06,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:06,011 INFO L85 PathProgramCache]: Analyzing trace with hash 716605628, now seen corresponding path program 14 times [2024-06-27 22:37:06,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:06,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200477617] [2024-06-27 22:37:06,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:06,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:08,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:08,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200477617] [2024-06-27 22:37:08,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200477617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:08,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:08,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:08,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649625762] [2024-06-27 22:37:08,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:08,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:08,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:08,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:08,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:08,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:37:08,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 389 transitions, 5978 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:08,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:08,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:37:08,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:09,444 INFO L124 PetriNetUnfolderBase]: 1070/2054 cut-off events. [2024-06-27 22:37:09,444 INFO L125 PetriNetUnfolderBase]: For 179559/179571 co-relation queries the response was YES. [2024-06-27 22:37:09,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17591 conditions, 2054 events. 1070/2054 cut-off events. For 179559/179571 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 12546 event pairs, 136 based on Foata normal form. 7/1823 useless extension candidates. Maximal degree in co-relation 17434. Up to 1566 conditions per place. [2024-06-27 22:37:09,467 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 280 selfloop transitions, 104 changer transitions 0/402 dead transitions. [2024-06-27 22:37:09,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 402 transitions, 7044 flow [2024-06-27 22:37:09,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:37:09,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:37:09,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:37:09,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 22:37:09,471 INFO L175 Difference]: Start difference. First operand has 334 places, 389 transitions, 5978 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:37:09,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 402 transitions, 7044 flow [2024-06-27 22:37:10,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 402 transitions, 6932 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 22:37:10,251 INFO L231 Difference]: Finished difference. Result has 332 places, 391 transitions, 6133 flow [2024-06-27 22:37:10,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5866, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6133, PETRI_PLACES=332, PETRI_TRANSITIONS=391} [2024-06-27 22:37:10,251 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 291 predicate places. [2024-06-27 22:37:10,252 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 391 transitions, 6133 flow [2024-06-27 22:37:10,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:10,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:10,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:10,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 22:37:10,252 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:10,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:10,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1296934796, now seen corresponding path program 5 times [2024-06-27 22:37:10,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:10,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160222717] [2024-06-27 22:37:10,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:10,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:14,162 INFO 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 22:37:14,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:14,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160222717] [2024-06-27 22:37:14,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160222717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:14,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:14,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:14,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351740120] [2024-06-27 22:37:14,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:14,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:14,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:14,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:14,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:14,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:37:14,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 391 transitions, 6133 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:14,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:14,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:37:14,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:15,230 INFO L124 PetriNetUnfolderBase]: 1260/2346 cut-off events. [2024-06-27 22:37:15,231 INFO L125 PetriNetUnfolderBase]: For 181979/181979 co-relation queries the response was YES. [2024-06-27 22:37:15,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19884 conditions, 2346 events. 1260/2346 cut-off events. For 181979/181979 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14252 event pairs, 177 based on Foata normal form. 2/2168 useless extension candidates. Maximal degree in co-relation 19726. Up to 1986 conditions per place. [2024-06-27 22:37:15,259 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 380 selfloop transitions, 23 changer transitions 0/412 dead transitions. [2024-06-27 22:37:15,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 412 transitions, 7073 flow [2024-06-27 22:37:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:15,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 22:37:15,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-27 22:37:15,260 INFO L175 Difference]: Start difference. First operand has 332 places, 391 transitions, 6133 flow. Second operand 11 states and 174 transitions. [2024-06-27 22:37:15,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 412 transitions, 7073 flow [2024-06-27 22:37:16,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 412 transitions, 6823 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 22:37:16,212 INFO L231 Difference]: Finished difference. Result has 337 places, 391 transitions, 5933 flow [2024-06-27 22:37:16,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5883, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5933, PETRI_PLACES=337, PETRI_TRANSITIONS=391} [2024-06-27 22:37:16,213 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-06-27 22:37:16,213 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 391 transitions, 5933 flow [2024-06-27 22:37:16,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:16,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:16,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:16,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 22:37:16,213 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:16,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:16,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1547245870, now seen corresponding path program 15 times [2024-06-27 22:37:16,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:16,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877835882] [2024-06-27 22:37:16,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:16,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:18,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:18,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877835882] [2024-06-27 22:37:18,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877835882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:18,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:18,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:18,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077011197] [2024-06-27 22:37:18,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:18,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:18,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:19,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:37:19,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 391 transitions, 5933 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:19,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:19,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:37:19,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:19,692 INFO L124 PetriNetUnfolderBase]: 1083/2072 cut-off events. [2024-06-27 22:37:19,692 INFO L125 PetriNetUnfolderBase]: For 185105/185117 co-relation queries the response was YES. [2024-06-27 22:37:19,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17684 conditions, 2072 events. 1083/2072 cut-off events. For 185105/185117 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 12642 event pairs, 133 based on Foata normal form. 8/1837 useless extension candidates. Maximal degree in co-relation 17524. Up to 1532 conditions per place. [2024-06-27 22:37:19,716 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 274 selfloop transitions, 118 changer transitions 0/409 dead transitions. [2024-06-27 22:37:19,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 409 transitions, 7341 flow [2024-06-27 22:37:19,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:37:19,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:37:19,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:37:19,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 22:37:19,717 INFO L175 Difference]: Start difference. First operand has 337 places, 391 transitions, 5933 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:37:19,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 409 transitions, 7341 flow [2024-06-27 22:37:20,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 409 transitions, 7279 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 22:37:20,479 INFO L231 Difference]: Finished difference. Result has 335 places, 396 transitions, 6255 flow [2024-06-27 22:37:20,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5871, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6255, PETRI_PLACES=335, PETRI_TRANSITIONS=396} [2024-06-27 22:37:20,479 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 294 predicate places. [2024-06-27 22:37:20,479 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 396 transitions, 6255 flow [2024-06-27 22:37:20,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:20,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:20,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:20,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 22:37:20,480 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:20,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:20,480 INFO L85 PathProgramCache]: Analyzing trace with hash 724032298, now seen corresponding path program 6 times [2024-06-27 22:37:20,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:20,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515273272] [2024-06-27 22:37:20,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:20,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:22,517 INFO 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 22:37:22,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:22,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515273272] [2024-06-27 22:37:22,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515273272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:22,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:22,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:37:22,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138137606] [2024-06-27 22:37:22,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:22,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:37:22,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:22,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:37:22,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:37:22,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:37:22,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 396 transitions, 6255 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:22,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:22,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:37:22,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:23,291 INFO L124 PetriNetUnfolderBase]: 1077/2066 cut-off events. [2024-06-27 22:37:23,292 INFO L125 PetriNetUnfolderBase]: For 179045/179061 co-relation queries the response was YES. [2024-06-27 22:37:23,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17672 conditions, 2066 events. 1077/2066 cut-off events. For 179045/179061 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 12638 event pairs, 124 based on Foata normal form. 2/1831 useless extension candidates. Maximal degree in co-relation 17513. Up to 1696 conditions per place. [2024-06-27 22:37:23,314 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 365 selfloop transitions, 27 changer transitions 0/409 dead transitions. [2024-06-27 22:37:23,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 409 transitions, 7101 flow [2024-06-27 22:37:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:37:23,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-27 22:37:23,315 INFO L175 Difference]: Start difference. First operand has 335 places, 396 transitions, 6255 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:37:23,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 409 transitions, 7101 flow [2024-06-27 22:37:24,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 409 transitions, 6599 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 22:37:24,169 INFO L231 Difference]: Finished difference. Result has 338 places, 396 transitions, 5811 flow [2024-06-27 22:37:24,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5753, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5811, PETRI_PLACES=338, PETRI_TRANSITIONS=396} [2024-06-27 22:37:24,169 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 297 predicate places. [2024-06-27 22:37:24,169 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 396 transitions, 5811 flow [2024-06-27 22:37:24,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:24,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:24,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:24,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 22:37:24,169 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:24,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:24,170 INFO L85 PathProgramCache]: Analyzing trace with hash 723755468, now seen corresponding path program 16 times [2024-06-27 22:37:24,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:24,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132599499] [2024-06-27 22:37:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:24,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:26,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132599499] [2024-06-27 22:37:26,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132599499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:26,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:26,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:26,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466898232] [2024-06-27 22:37:26,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:26,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:26,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:26,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:26,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:26,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:37:26,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 396 transitions, 5811 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:26,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:26,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:37:26,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:27,434 INFO L124 PetriNetUnfolderBase]: 1084/2074 cut-off events. [2024-06-27 22:37:27,434 INFO L125 PetriNetUnfolderBase]: For 174399/174411 co-relation queries the response was YES. [2024-06-27 22:37:27,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17045 conditions, 2074 events. 1084/2074 cut-off events. For 174399/174411 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 12653 event pairs, 131 based on Foata normal form. 7/1838 useless extension candidates. Maximal degree in co-relation 16885. Up to 1573 conditions per place. [2024-06-27 22:37:27,457 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 289 selfloop transitions, 111 changer transitions 0/417 dead transitions. [2024-06-27 22:37:27,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 417 transitions, 7058 flow [2024-06-27 22:37:27,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:37:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:37:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:37:27,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 22:37:27,458 INFO L175 Difference]: Start difference. First operand has 338 places, 396 transitions, 5811 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:37:27,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 417 transitions, 7058 flow [2024-06-27 22:37:28,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 417 transitions, 6885 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-27 22:37:28,238 INFO L231 Difference]: Finished difference. Result has 338 places, 406 transitions, 6113 flow [2024-06-27 22:37:28,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5638, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6113, PETRI_PLACES=338, PETRI_TRANSITIONS=406} [2024-06-27 22:37:28,239 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 297 predicate places. [2024-06-27 22:37:28,239 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 406 transitions, 6113 flow [2024-06-27 22:37:28,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:28,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:28,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:28,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 22:37:28,239 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:28,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:28,240 INFO L85 PathProgramCache]: Analyzing trace with hash 723762908, now seen corresponding path program 17 times [2024-06-27 22:37:28,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:28,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528824526] [2024-06-27 22:37:28,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:28,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:31,056 INFO 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 22:37:31,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:31,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528824526] [2024-06-27 22:37:31,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528824526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:31,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:31,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:31,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088513033] [2024-06-27 22:37:31,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:31,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:31,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:31,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:31,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:31,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:37:31,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 406 transitions, 6113 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:31,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:31,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:37:31,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:32,039 INFO L124 PetriNetUnfolderBase]: 1092/2069 cut-off events. [2024-06-27 22:37:32,039 INFO L125 PetriNetUnfolderBase]: For 174504/174516 co-relation queries the response was YES. [2024-06-27 22:37:32,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16991 conditions, 2069 events. 1092/2069 cut-off events. For 174504/174516 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 12658 event pairs, 156 based on Foata normal form. 8/1835 useless extension candidates. Maximal degree in co-relation 16831. Up to 1541 conditions per place. [2024-06-27 22:37:32,062 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 281 selfloop transitions, 123 changer transitions 0/421 dead transitions. [2024-06-27 22:37:32,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 421 transitions, 7654 flow [2024-06-27 22:37:32,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:37:32,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-27 22:37:32,063 INFO L175 Difference]: Start difference. First operand has 338 places, 406 transitions, 6113 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:37:32,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 421 transitions, 7654 flow [2024-06-27 22:37:32,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 421 transitions, 7374 flow, removed 86 selfloop flow, removed 3 redundant places. [2024-06-27 22:37:32,890 INFO L231 Difference]: Finished difference. Result has 345 places, 408 transitions, 6165 flow [2024-06-27 22:37:32,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5861, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6165, PETRI_PLACES=345, PETRI_TRANSITIONS=408} [2024-06-27 22:37:32,890 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-27 22:37:32,890 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 408 transitions, 6165 flow [2024-06-27 22:37:32,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:32,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:32,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:32,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 22:37:32,891 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:32,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:32,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2007209440, now seen corresponding path program 6 times [2024-06-27 22:37:32,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:32,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407471182] [2024-06-27 22:37:32,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:32,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:33,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:33,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407471182] [2024-06-27 22:37:33,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407471182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:33,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:33,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:33,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634877535] [2024-06-27 22:37:33,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:33,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:33,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:33,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:33,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:33,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:37:33,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 408 transitions, 6165 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:33,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:33,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:37:33,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:34,750 INFO L124 PetriNetUnfolderBase]: 1331/2473 cut-off events. [2024-06-27 22:37:34,751 INFO L125 PetriNetUnfolderBase]: For 184271/184271 co-relation queries the response was YES. [2024-06-27 22:37:34,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19945 conditions, 2473 events. 1331/2473 cut-off events. For 184271/184271 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15258 event pairs, 122 based on Foata normal form. 2/2283 useless extension candidates. Maximal degree in co-relation 19782. Up to 2032 conditions per place. [2024-06-27 22:37:34,778 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 378 selfloop transitions, 56 changer transitions 0/443 dead transitions. [2024-06-27 22:37:34,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 443 transitions, 7282 flow [2024-06-27 22:37:34,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:34,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:37:34,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:37:34,779 INFO L175 Difference]: Start difference. First operand has 345 places, 408 transitions, 6165 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:37:34,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 443 transitions, 7282 flow [2024-06-27 22:37:35,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 443 transitions, 6893 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:35,521 INFO L231 Difference]: Finished difference. Result has 347 places, 416 transitions, 6045 flow [2024-06-27 22:37:35,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5776, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6045, PETRI_PLACES=347, PETRI_TRANSITIONS=416} [2024-06-27 22:37:35,521 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 306 predicate places. [2024-06-27 22:37:35,521 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 416 transitions, 6045 flow [2024-06-27 22:37:35,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:35,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:35,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:35,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 22:37:35,522 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:35,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:35,522 INFO L85 PathProgramCache]: Analyzing trace with hash -253436942, now seen corresponding path program 7 times [2024-06-27 22:37:35,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:35,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908666932] [2024-06-27 22:37:35,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:35,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:36,560 INFO 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 22:37:36,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:36,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908666932] [2024-06-27 22:37:36,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908666932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:36,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:36,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:36,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525186869] [2024-06-27 22:37:36,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:36,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:36,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:36,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:36,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:36,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:37:36,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 416 transitions, 6045 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:36,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:36,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:37:36,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:37,499 INFO L124 PetriNetUnfolderBase]: 1351/2512 cut-off events. [2024-06-27 22:37:37,499 INFO L125 PetriNetUnfolderBase]: For 187860/187860 co-relation queries the response was YES. [2024-06-27 22:37:37,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19869 conditions, 2512 events. 1351/2512 cut-off events. For 187860/187860 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 15557 event pairs, 145 based on Foata normal form. 2/2323 useless extension candidates. Maximal degree in co-relation 19705. Up to 2096 conditions per place. [2024-06-27 22:37:37,527 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 375 selfloop transitions, 60 changer transitions 0/444 dead transitions. [2024-06-27 22:37:37,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 444 transitions, 7103 flow [2024-06-27 22:37:37,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:37,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:37:37,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:37:37,528 INFO L175 Difference]: Start difference. First operand has 347 places, 416 transitions, 6045 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:37:37,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 444 transitions, 7103 flow [2024-06-27 22:37:38,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 444 transitions, 6953 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 22:37:38,267 INFO L231 Difference]: Finished difference. Result has 351 places, 420 transitions, 6111 flow [2024-06-27 22:37:38,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5895, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6111, PETRI_PLACES=351, PETRI_TRANSITIONS=420} [2024-06-27 22:37:38,267 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 310 predicate places. [2024-06-27 22:37:38,267 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 420 transitions, 6111 flow [2024-06-27 22:37:38,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:38,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:38,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:38,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 22:37:38,268 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:38,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:38,268 INFO L85 PathProgramCache]: Analyzing trace with hash 980568852, now seen corresponding path program 8 times [2024-06-27 22:37:38,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:38,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712481800] [2024-06-27 22:37:38,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:38,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:39,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:39,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712481800] [2024-06-27 22:37:39,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712481800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:39,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:39,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:37:39,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29819164] [2024-06-27 22:37:39,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:39,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:37:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:39,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:37:39,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:37:39,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:37:39,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 420 transitions, 6111 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:39,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:39,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:37:39,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:39,999 INFO L124 PetriNetUnfolderBase]: 1330/2508 cut-off events. [2024-06-27 22:37:39,999 INFO L125 PetriNetUnfolderBase]: For 192285/192289 co-relation queries the response was YES. [2024-06-27 22:37:40,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19307 conditions, 2508 events. 1330/2508 cut-off events. For 192285/192289 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 16004 event pairs, 78 based on Foata normal form. 5/2328 useless extension candidates. Maximal degree in co-relation 19141. Up to 1404 conditions per place. [2024-06-27 22:37:40,032 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 240 selfloop transitions, 68 changer transitions 0/457 dead transitions. [2024-06-27 22:37:40,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 457 transitions, 7042 flow [2024-06-27 22:37:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:37:40,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-27 22:37:40,033 INFO L175 Difference]: Start difference. First operand has 351 places, 420 transitions, 6111 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:37:40,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 457 transitions, 7042 flow [2024-06-27 22:37:40,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 457 transitions, 6868 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 22:37:40,833 INFO L231 Difference]: Finished difference. Result has 354 places, 431 transitions, 6333 flow [2024-06-27 22:37:40,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5937, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6333, PETRI_PLACES=354, PETRI_TRANSITIONS=431} [2024-06-27 22:37:40,834 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 313 predicate places. [2024-06-27 22:37:40,834 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 431 transitions, 6333 flow [2024-06-27 22:37:40,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:40,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:40,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:40,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 22:37:40,834 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:40,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:40,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1971926038, now seen corresponding path program 9 times [2024-06-27 22:37:40,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:40,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487454182] [2024-06-27 22:37:40,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:40,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:41,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:41,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487454182] [2024-06-27 22:37:41,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487454182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:41,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:41,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505914770] [2024-06-27 22:37:41,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:41,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:41,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:41,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:41,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:42,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:37:42,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 431 transitions, 6333 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:42,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:42,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:37:42,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:42,905 INFO L124 PetriNetUnfolderBase]: 1455/2705 cut-off events. [2024-06-27 22:37:42,905 INFO L125 PetriNetUnfolderBase]: For 199637/199637 co-relation queries the response was YES. [2024-06-27 22:37:42,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21537 conditions, 2705 events. 1455/2705 cut-off events. For 199637/199637 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 17268 event pairs, 168 based on Foata normal form. 2/2509 useless extension candidates. Maximal degree in co-relation 21369. Up to 2224 conditions per place. [2024-06-27 22:37:42,936 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 400 selfloop transitions, 63 changer transitions 0/472 dead transitions. [2024-06-27 22:37:42,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 472 transitions, 7720 flow [2024-06-27 22:37:42,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:42,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:42,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:37:42,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:37:42,937 INFO L175 Difference]: Start difference. First operand has 354 places, 431 transitions, 6333 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:37:42,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 472 transitions, 7720 flow [2024-06-27 22:37:43,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 472 transitions, 7466 flow, removed 112 selfloop flow, removed 4 redundant places. [2024-06-27 22:37:43,709 INFO L231 Difference]: Finished difference. Result has 361 places, 447 transitions, 6615 flow [2024-06-27 22:37:43,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6191, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6615, PETRI_PLACES=361, PETRI_TRANSITIONS=447} [2024-06-27 22:37:43,710 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-27 22:37:43,710 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 447 transitions, 6615 flow [2024-06-27 22:37:43,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:43,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:43,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:43,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 22:37:43,710 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:43,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:43,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1967352298, now seen corresponding path program 10 times [2024-06-27 22:37:43,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:43,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275724502] [2024-06-27 22:37:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:43,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:44,895 INFO 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 22:37:44,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:44,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275724502] [2024-06-27 22:37:44,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275724502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:44,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:44,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:44,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405993456] [2024-06-27 22:37:44,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:44,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:44,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:44,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:44,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:44,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:37:44,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 447 transitions, 6615 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:44,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:44,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:37:44,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:45,900 INFO L124 PetriNetUnfolderBase]: 1482/2758 cut-off events. [2024-06-27 22:37:45,900 INFO L125 PetriNetUnfolderBase]: For 198161/198161 co-relation queries the response was YES. [2024-06-27 22:37:45,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21698 conditions, 2758 events. 1482/2758 cut-off events. For 198161/198161 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 17746 event pairs, 193 based on Foata normal form. 2/2561 useless extension candidates. Maximal degree in co-relation 21527. Up to 2324 conditions per place. [2024-06-27 22:37:45,933 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 405 selfloop transitions, 61 changer transitions 0/475 dead transitions. [2024-06-27 22:37:45,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 475 transitions, 7753 flow [2024-06-27 22:37:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:45,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:37:45,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:37:45,934 INFO L175 Difference]: Start difference. First operand has 361 places, 447 transitions, 6615 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:37:45,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 475 transitions, 7753 flow [2024-06-27 22:37:46,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 475 transitions, 7553 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-27 22:37:46,796 INFO L231 Difference]: Finished difference. Result has 364 places, 453 transitions, 6669 flow [2024-06-27 22:37:46,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6415, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6669, PETRI_PLACES=364, PETRI_TRANSITIONS=453} [2024-06-27 22:37:46,796 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 323 predicate places. [2024-06-27 22:37:46,796 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 453 transitions, 6669 flow [2024-06-27 22:37:46,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:46,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:46,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:46,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 22:37:46,797 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:46,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:46,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1626047732, now seen corresponding path program 11 times [2024-06-27 22:37:46,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:46,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511225354] [2024-06-27 22:37:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:46,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:48,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:48,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511225354] [2024-06-27 22:37:48,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511225354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:48,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:48,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:48,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618594666] [2024-06-27 22:37:48,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:48,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:48,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:48,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:48,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:48,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:37:48,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 453 transitions, 6669 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:48,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:48,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:37:48,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:49,041 INFO L124 PetriNetUnfolderBase]: 1502/2796 cut-off events. [2024-06-27 22:37:49,041 INFO L125 PetriNetUnfolderBase]: For 202770/202770 co-relation queries the response was YES. [2024-06-27 22:37:49,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21942 conditions, 2796 events. 1502/2796 cut-off events. For 202770/202770 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 18045 event pairs, 185 based on Foata normal form. 2/2597 useless extension candidates. Maximal degree in co-relation 21770. Up to 2346 conditions per place. [2024-06-27 22:37:49,073 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 395 selfloop transitions, 75 changer transitions 0/479 dead transitions. [2024-06-27 22:37:49,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 479 transitions, 7803 flow [2024-06-27 22:37:49,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:49,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:37:49,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:37:49,074 INFO L175 Difference]: Start difference. First operand has 364 places, 453 transitions, 6669 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:37:49,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 479 transitions, 7803 flow [2024-06-27 22:37:49,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 479 transitions, 7629 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 22:37:49,964 INFO L231 Difference]: Finished difference. Result has 366 places, 457 transitions, 6752 flow [2024-06-27 22:37:49,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6495, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6752, PETRI_PLACES=366, PETRI_TRANSITIONS=457} [2024-06-27 22:37:49,964 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 325 predicate places. [2024-06-27 22:37:49,964 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 457 transitions, 6752 flow [2024-06-27 22:37:49,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:49,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:49,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:49,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 22:37:49,965 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:49,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:49,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1021263116, now seen corresponding path program 12 times [2024-06-27 22:37:49,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:49,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826206503] [2024-06-27 22:37:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:49,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:51,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:51,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826206503] [2024-06-27 22:37:51,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826206503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:51,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:51,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:51,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366511350] [2024-06-27 22:37:51,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:51,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:51,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:51,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:51,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:51,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:37:51,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 457 transitions, 6752 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:51,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:51,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:37:51,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:52,674 INFO L124 PetriNetUnfolderBase]: 1536/2856 cut-off events. [2024-06-27 22:37:52,674 INFO L125 PetriNetUnfolderBase]: For 207389/207389 co-relation queries the response was YES. [2024-06-27 22:37:52,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22380 conditions, 2856 events. 1536/2856 cut-off events. For 207389/207389 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 18521 event pairs, 182 based on Foata normal form. 2/2654 useless extension candidates. Maximal degree in co-relation 22207. Up to 2417 conditions per place. [2024-06-27 22:37:52,703 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 417 selfloop transitions, 62 changer transitions 0/488 dead transitions. [2024-06-27 22:37:52,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 488 transitions, 7990 flow [2024-06-27 22:37:52,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:52,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:37:52,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:37:52,704 INFO L175 Difference]: Start difference. First operand has 366 places, 457 transitions, 6752 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:37:52,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 488 transitions, 7990 flow [2024-06-27 22:37:53,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 488 transitions, 7773 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 22:37:53,697 INFO L231 Difference]: Finished difference. Result has 370 places, 468 transitions, 6909 flow [2024-06-27 22:37:53,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6535, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6909, PETRI_PLACES=370, PETRI_TRANSITIONS=468} [2024-06-27 22:37:53,697 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 329 predicate places. [2024-06-27 22:37:53,697 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 468 transitions, 6909 flow [2024-06-27 22:37:53,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:53,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:53,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:53,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 22:37:53,698 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:53,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:53,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1021115246, now seen corresponding path program 13 times [2024-06-27 22:37:53,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:53,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193935807] [2024-06-27 22:37:53,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:53,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:54,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:54,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193935807] [2024-06-27 22:37:54,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193935807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:54,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:54,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:54,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455116801] [2024-06-27 22:37:54,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:54,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:54,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:54,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:54,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:54,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:37:54,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 468 transitions, 6909 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:54,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:54,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:37:54,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:55,949 INFO L124 PetriNetUnfolderBase]: 1603/2983 cut-off events. [2024-06-27 22:37:55,950 INFO L125 PetriNetUnfolderBase]: For 213121/213121 co-relation queries the response was YES. [2024-06-27 22:37:55,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23224 conditions, 2983 events. 1603/2983 cut-off events. For 213121/213121 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 19597 event pairs, 181 based on Foata normal form. 2/2773 useless extension candidates. Maximal degree in co-relation 23048. Up to 2476 conditions per place. [2024-06-27 22:37:55,986 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 434 selfloop transitions, 66 changer transitions 0/509 dead transitions. [2024-06-27 22:37:55,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 509 transitions, 8300 flow [2024-06-27 22:37:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:55,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:37:55,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:37:55,987 INFO L175 Difference]: Start difference. First operand has 370 places, 468 transitions, 6909 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:37:55,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 509 transitions, 8300 flow [2024-06-27 22:37:57,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 509 transitions, 8136 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 22:37:57,028 INFO L231 Difference]: Finished difference. Result has 375 places, 486 transitions, 7238 flow [2024-06-27 22:37:57,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6745, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7238, PETRI_PLACES=375, PETRI_TRANSITIONS=486} [2024-06-27 22:37:57,028 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 334 predicate places. [2024-06-27 22:37:57,028 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 486 transitions, 7238 flow [2024-06-27 22:37:57,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:57,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:57,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:57,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 22:37:57,029 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:57,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:57,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1137448016, now seen corresponding path program 14 times [2024-06-27 22:37:57,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:57,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300129851] [2024-06-27 22:37:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:57,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:58,485 INFO 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 22:37:58,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:58,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300129851] [2024-06-27 22:37:58,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300129851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:58,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:58,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:58,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732698020] [2024-06-27 22:37:58,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:58,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:58,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:58,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:58,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:58,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:37:58,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 486 transitions, 7238 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:37:58,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:58,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:37:58,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:59,712 INFO L124 PetriNetUnfolderBase]: 1630/3035 cut-off events. [2024-06-27 22:37:59,713 INFO L125 PetriNetUnfolderBase]: For 218619/218619 co-relation queries the response was YES. [2024-06-27 22:37:59,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23751 conditions, 3035 events. 1630/3035 cut-off events. For 218619/218619 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 20048 event pairs, 210 based on Foata normal form. 2/2825 useless extension candidates. Maximal degree in co-relation 23573. Up to 2580 conditions per place. [2024-06-27 22:37:59,749 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 434 selfloop transitions, 69 changer transitions 0/512 dead transitions. [2024-06-27 22:37:59,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 512 transitions, 8454 flow [2024-06-27 22:37:59,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:59,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:59,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:37:59,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:37:59,750 INFO L175 Difference]: Start difference. First operand has 375 places, 486 transitions, 7238 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:37:59,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 512 transitions, 8454 flow [2024-06-27 22:38:00,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 512 transitions, 8241 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-27 22:38:00,917 INFO L231 Difference]: Finished difference. Result has 378 places, 492 transitions, 7304 flow [2024-06-27 22:38:00,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7025, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7304, PETRI_PLACES=378, PETRI_TRANSITIONS=492} [2024-06-27 22:38:00,918 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-27 22:38:00,918 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 492 transitions, 7304 flow [2024-06-27 22:38:00,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:38:00,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:00,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:00,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 22:38:00,918 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:00,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:00,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1330792780, now seen corresponding path program 15 times [2024-06-27 22:38:00,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:00,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645009568] [2024-06-27 22:38:00,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:00,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:02,262 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 22:38:02,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:02,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645009568] [2024-06-27 22:38:02,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645009568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:02,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:02,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:38:02,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349148000] [2024-06-27 22:38:02,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:02,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:38:02,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:02,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:38:02,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:38:02,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:38:02,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 492 transitions, 7304 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:02,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:02,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:38:02,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:03,449 INFO L124 PetriNetUnfolderBase]: 1634/3044 cut-off events. [2024-06-27 22:38:03,449 INFO L125 PetriNetUnfolderBase]: For 207852/207852 co-relation queries the response was YES. [2024-06-27 22:38:03,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23383 conditions, 3044 events. 1634/3044 cut-off events. For 207852/207852 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 20108 event pairs, 214 based on Foata normal form. 2/2832 useless extension candidates. Maximal degree in co-relation 23204. Up to 2552 conditions per place. [2024-06-27 22:38:03,486 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 417 selfloop transitions, 90 changer transitions 0/516 dead transitions. [2024-06-27 22:38:03,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 516 transitions, 8522 flow [2024-06-27 22:38:03,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:03,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:03,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:38:03,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:38:03,487 INFO L175 Difference]: Start difference. First operand has 378 places, 492 transitions, 7304 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:38:03,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 516 transitions, 8522 flow [2024-06-27 22:38:04,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 516 transitions, 8311 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:04,629 INFO L231 Difference]: Finished difference. Result has 380 places, 496 transitions, 7395 flow [2024-06-27 22:38:04,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7093, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7395, PETRI_PLACES=380, PETRI_TRANSITIONS=496} [2024-06-27 22:38:04,630 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 339 predicate places. [2024-06-27 22:38:04,630 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 496 transitions, 7395 flow [2024-06-27 22:38:04,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:04,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:04,630 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 22:38:04,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 22:38:04,630 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:04,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:04,631 INFO L85 PathProgramCache]: Analyzing trace with hash -374517900, now seen corresponding path program 1 times [2024-06-27 22:38:04,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:04,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034196736] [2024-06-27 22:38:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:04,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:06,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:06,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034196736] [2024-06-27 22:38:06,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034196736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:06,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:06,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:06,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589928954] [2024-06-27 22:38:06,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:06,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:06,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:06,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:06,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:07,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:38:07,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 496 transitions, 7395 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:07,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:07,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:38:07,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:08,213 INFO L124 PetriNetUnfolderBase]: 1647/3046 cut-off events. [2024-06-27 22:38:08,213 INFO L125 PetriNetUnfolderBase]: For 207077/207077 co-relation queries the response was YES. [2024-06-27 22:38:08,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23459 conditions, 3046 events. 1647/3046 cut-off events. For 207077/207077 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 20230 event pairs, 235 based on Foata normal form. 2/2836 useless extension candidates. Maximal degree in co-relation 23279. Up to 2627 conditions per place. [2024-06-27 22:38:08,251 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 451 selfloop transitions, 59 changer transitions 0/519 dead transitions. [2024-06-27 22:38:08,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 519 transitions, 8625 flow [2024-06-27 22:38:08,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:08,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:38:08,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:38:08,253 INFO L175 Difference]: Start difference. First operand has 380 places, 496 transitions, 7395 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:38:08,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 519 transitions, 8625 flow [2024-06-27 22:38:09,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 519 transitions, 8361 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:09,561 INFO L231 Difference]: Finished difference. Result has 383 places, 501 transitions, 7406 flow [2024-06-27 22:38:09,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7131, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7406, PETRI_PLACES=383, PETRI_TRANSITIONS=501} [2024-06-27 22:38:09,561 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-27 22:38:09,561 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 501 transitions, 7406 flow [2024-06-27 22:38:09,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:09,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:09,561 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 22:38:09,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 22:38:09,562 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:09,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:09,563 INFO L85 PathProgramCache]: Analyzing trace with hash -374695530, now seen corresponding path program 2 times [2024-06-27 22:38:09,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:09,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899479395] [2024-06-27 22:38:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:09,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:10,968 INFO 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 22:38:10,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:10,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899479395] [2024-06-27 22:38:10,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899479395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:10,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:10,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:10,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908307876] [2024-06-27 22:38:10,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:10,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:10,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:10,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:10,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:11,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:38:11,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 501 transitions, 7406 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:11,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:11,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:38:11,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:12,171 INFO L124 PetriNetUnfolderBase]: 1664/3077 cut-off events. [2024-06-27 22:38:12,171 INFO L125 PetriNetUnfolderBase]: For 208157/208157 co-relation queries the response was YES. [2024-06-27 22:38:12,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23501 conditions, 3077 events. 1664/3077 cut-off events. For 208157/208157 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 20480 event pairs, 237 based on Foata normal form. 2/2870 useless extension candidates. Maximal degree in co-relation 23319. Up to 2604 conditions per place. [2024-06-27 22:38:12,208 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 455 selfloop transitions, 60 changer transitions 0/524 dead transitions. [2024-06-27 22:38:12,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 524 transitions, 8602 flow [2024-06-27 22:38:12,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:12,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:38:12,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 22:38:12,209 INFO L175 Difference]: Start difference. First operand has 383 places, 501 transitions, 7406 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:38:12,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 524 transitions, 8602 flow [2024-06-27 22:38:13,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 524 transitions, 8431 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 22:38:13,459 INFO L231 Difference]: Finished difference. Result has 387 places, 502 transitions, 7388 flow [2024-06-27 22:38:13,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7235, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7388, PETRI_PLACES=387, PETRI_TRANSITIONS=502} [2024-06-27 22:38:13,459 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-27 22:38:13,459 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 502 transitions, 7388 flow [2024-06-27 22:38:13,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:13,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:13,459 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 22:38:13,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 22:38:13,459 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:13,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:13,460 INFO L85 PathProgramCache]: Analyzing trace with hash 498623702, now seen corresponding path program 3 times [2024-06-27 22:38:13,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:13,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606581425] [2024-06-27 22:38:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:13,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:15,073 INFO 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 22:38:15,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:15,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606581425] [2024-06-27 22:38:15,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606581425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:15,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:15,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:15,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233071883] [2024-06-27 22:38:15,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:15,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:15,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:15,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:15,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:15,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:38:15,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 502 transitions, 7388 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:15,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:15,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:38:15,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:16,316 INFO L124 PetriNetUnfolderBase]: 1677/3101 cut-off events. [2024-06-27 22:38:16,316 INFO L125 PetriNetUnfolderBase]: For 211249/211249 co-relation queries the response was YES. [2024-06-27 22:38:16,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23678 conditions, 3101 events. 1677/3101 cut-off events. For 211249/211249 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 20660 event pairs, 224 based on Foata normal form. 2/2889 useless extension candidates. Maximal degree in co-relation 23495. Up to 2567 conditions per place. [2024-06-27 22:38:16,353 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 453 selfloop transitions, 65 changer transitions 0/527 dead transitions. [2024-06-27 22:38:16,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 527 transitions, 8601 flow [2024-06-27 22:38:16,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:16,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:16,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:38:16,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:38:16,355 INFO L175 Difference]: Start difference. First operand has 387 places, 502 transitions, 7388 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:38:16,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 527 transitions, 8601 flow [2024-06-27 22:38:17,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 527 transitions, 8474 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 22:38:17,723 INFO L231 Difference]: Finished difference. Result has 389 places, 504 transitions, 7482 flow [2024-06-27 22:38:17,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7261, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7482, PETRI_PLACES=389, PETRI_TRANSITIONS=504} [2024-06-27 22:38:17,723 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-27 22:38:17,723 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 504 transitions, 7482 flow [2024-06-27 22:38:17,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:17,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:17,724 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 22:38:17,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 22:38:17,724 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:17,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:17,725 INFO L85 PathProgramCache]: Analyzing trace with hash -183593984, now seen corresponding path program 4 times [2024-06-27 22:38:17,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:17,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129892811] [2024-06-27 22:38:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:17,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:20,034 INFO 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 22:38:20,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:20,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129892811] [2024-06-27 22:38:20,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129892811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:20,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:20,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:20,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546664907] [2024-06-27 22:38:20,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:20,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:20,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:20,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:20,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:20,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:38:20,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 504 transitions, 7482 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:20,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:20,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:38:20,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:21,341 INFO L124 PetriNetUnfolderBase]: 1690/3137 cut-off events. [2024-06-27 22:38:21,341 INFO L125 PetriNetUnfolderBase]: For 218425/218425 co-relation queries the response was YES. [2024-06-27 22:38:21,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23990 conditions, 3137 events. 1690/3137 cut-off events. For 218425/218425 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 20997 event pairs, 253 based on Foata normal form. 2/2923 useless extension candidates. Maximal degree in co-relation 23806. Up to 2669 conditions per place. [2024-06-27 22:38:21,382 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 432 selfloop transitions, 83 changer transitions 0/524 dead transitions. [2024-06-27 22:38:21,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 524 transitions, 8680 flow [2024-06-27 22:38:21,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:38:21,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:38:21,383 INFO L175 Difference]: Start difference. First operand has 389 places, 504 transitions, 7482 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:38:21,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 524 transitions, 8680 flow [2024-06-27 22:38:22,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 524 transitions, 8483 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-27 22:38:22,614 INFO L231 Difference]: Finished difference. Result has 391 places, 506 transitions, 7544 flow [2024-06-27 22:38:22,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7285, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7544, PETRI_PLACES=391, PETRI_TRANSITIONS=506} [2024-06-27 22:38:22,614 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 350 predicate places. [2024-06-27 22:38:22,614 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 506 transitions, 7544 flow [2024-06-27 22:38:22,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:22,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:22,614 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 22:38:22,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 22:38:22,615 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:22,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:22,615 INFO L85 PathProgramCache]: Analyzing trace with hash -974207232, now seen corresponding path program 5 times [2024-06-27 22:38:22,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:22,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888279937] [2024-06-27 22:38:22,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:22,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:24,614 INFO 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 22:38:24,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:24,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888279937] [2024-06-27 22:38:24,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888279937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:24,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:24,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:24,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62217621] [2024-06-27 22:38:24,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:24,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:24,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:24,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:24,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:24,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:38:24,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 506 transitions, 7544 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:24,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:24,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:38:24,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:25,850 INFO L124 PetriNetUnfolderBase]: 1703/3152 cut-off events. [2024-06-27 22:38:25,851 INFO L125 PetriNetUnfolderBase]: For 221995/221995 co-relation queries the response was YES. [2024-06-27 22:38:25,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24173 conditions, 3152 events. 1703/3152 cut-off events. For 221995/221995 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 21082 event pairs, 266 based on Foata normal form. 2/2940 useless extension candidates. Maximal degree in co-relation 23988. Up to 2714 conditions per place. [2024-06-27 22:38:25,889 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 449 selfloop transitions, 68 changer transitions 0/526 dead transitions. [2024-06-27 22:38:25,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 526 transitions, 8750 flow [2024-06-27 22:38:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:25,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:38:25,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:38:25,891 INFO L175 Difference]: Start difference. First operand has 391 places, 506 transitions, 7544 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:38:25,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 526 transitions, 8750 flow [2024-06-27 22:38:27,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 526 transitions, 8511 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-27 22:38:27,162 INFO L231 Difference]: Finished difference. Result has 392 places, 508 transitions, 7538 flow [2024-06-27 22:38:27,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7305, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7538, PETRI_PLACES=392, PETRI_TRANSITIONS=508} [2024-06-27 22:38:27,162 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2024-06-27 22:38:27,162 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 508 transitions, 7538 flow [2024-06-27 22:38:27,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:27,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:27,163 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 22:38:27,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 22:38:27,163 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:27,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:27,163 INFO L85 PathProgramCache]: Analyzing trace with hash -190027724, now seen corresponding path program 6 times [2024-06-27 22:38:27,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:27,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998165943] [2024-06-27 22:38:27,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:27,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:28,805 INFO 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 22:38:28,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:28,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998165943] [2024-06-27 22:38:28,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998165943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:28,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:28,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:28,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565366225] [2024-06-27 22:38:28,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:28,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:28,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:28,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:28,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:28,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:38:28,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 508 transitions, 7538 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:28,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:28,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:38:28,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:30,030 INFO L124 PetriNetUnfolderBase]: 1716/3184 cut-off events. [2024-06-27 22:38:30,031 INFO L125 PetriNetUnfolderBase]: For 227326/227326 co-relation queries the response was YES. [2024-06-27 22:38:30,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24326 conditions, 3184 events. 1716/3184 cut-off events. For 227326/227326 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 21382 event pairs, 254 based on Foata normal form. 2/2971 useless extension candidates. Maximal degree in co-relation 24140. Up to 2701 conditions per place. [2024-06-27 22:38:30,072 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 453 selfloop transitions, 68 changer transitions 0/530 dead transitions. [2024-06-27 22:38:30,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 530 transitions, 8764 flow [2024-06-27 22:38:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:30,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:38:30,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 22:38:30,073 INFO L175 Difference]: Start difference. First operand has 392 places, 508 transitions, 7538 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:38:30,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 530 transitions, 8764 flow [2024-06-27 22:38:31,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 530 transitions, 8551 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:31,382 INFO L231 Difference]: Finished difference. Result has 395 places, 510 transitions, 7562 flow [2024-06-27 22:38:31,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7325, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7562, PETRI_PLACES=395, PETRI_TRANSITIONS=510} [2024-06-27 22:38:31,382 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 354 predicate places. [2024-06-27 22:38:31,382 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 510 transitions, 7562 flow [2024-06-27 22:38:31,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:31,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:31,382 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 22:38:31,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 22:38:31,383 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:31,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:31,383 INFO L85 PathProgramCache]: Analyzing trace with hash -183356400, now seen corresponding path program 1 times [2024-06-27 22:38:31,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:31,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157879511] [2024-06-27 22:38:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:31,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:33,698 INFO 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 22:38:33,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:33,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157879511] [2024-06-27 22:38:33,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157879511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:33,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:33,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:38:33,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496579828] [2024-06-27 22:38:33,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:33,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:38:33,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:33,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:38:33,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:38:33,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:38:33,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 510 transitions, 7562 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:33,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:33,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:38:33,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:34,973 INFO L124 PetriNetUnfolderBase]: 1483/2824 cut-off events. [2024-06-27 22:38:34,973 INFO L125 PetriNetUnfolderBase]: For 220215/220227 co-relation queries the response was YES. [2024-06-27 22:38:34,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21709 conditions, 2824 events. 1483/2824 cut-off events. For 220215/220227 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 19192 event pairs, 267 based on Foata normal form. 7/2557 useless extension candidates. Maximal degree in co-relation 21522. Up to 2264 conditions per place. [2024-06-27 22:38:35,005 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 382 selfloop transitions, 127 changer transitions 0/527 dead transitions. [2024-06-27 22:38:35,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 527 transitions, 8670 flow [2024-06-27 22:38:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:35,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:38:35,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:38:35,006 INFO L175 Difference]: Start difference. First operand has 395 places, 510 transitions, 7562 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:38:35,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 527 transitions, 8670 flow [2024-06-27 22:38:36,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 527 transitions, 8453 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-27 22:38:36,524 INFO L231 Difference]: Finished difference. Result has 398 places, 513 transitions, 7694 flow [2024-06-27 22:38:36,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7345, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7694, PETRI_PLACES=398, PETRI_TRANSITIONS=513} [2024-06-27 22:38:36,525 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-27 22:38:36,525 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 513 transitions, 7694 flow [2024-06-27 22:38:36,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:36,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:36,525 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 22:38:36,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 22:38:36,525 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:36,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:36,526 INFO L85 PathProgramCache]: Analyzing trace with hash -183347720, now seen corresponding path program 1 times [2024-06-27 22:38:36,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:36,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170272609] [2024-06-27 22:38:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:36,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:39,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:39,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170272609] [2024-06-27 22:38:39,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170272609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:39,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:39,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:38:39,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516394391] [2024-06-27 22:38:39,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:39,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:38:39,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:39,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:38:39,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:38:39,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:38:39,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 513 transitions, 7694 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:39,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:39,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:38:39,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:40,956 INFO L124 PetriNetUnfolderBase]: 1554/3022 cut-off events. [2024-06-27 22:38:40,957 INFO L125 PetriNetUnfolderBase]: For 293070/293086 co-relation queries the response was YES. [2024-06-27 22:38:40,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22870 conditions, 3022 events. 1554/3022 cut-off events. For 293070/293086 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 20968 event pairs, 295 based on Foata normal form. 16/2746 useless extension candidates. Maximal degree in co-relation 22681. Up to 2330 conditions per place. [2024-06-27 22:38:41,000 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 420 selfloop transitions, 99 changer transitions 0/537 dead transitions. [2024-06-27 22:38:41,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 537 transitions, 8924 flow [2024-06-27 22:38:41,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:41,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:38:41,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 22:38:41,001 INFO L175 Difference]: Start difference. First operand has 398 places, 513 transitions, 7694 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:38:41,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 537 transitions, 8924 flow [2024-06-27 22:38:42,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 537 transitions, 8647 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:42,422 INFO L231 Difference]: Finished difference. Result has 402 places, 516 transitions, 7672 flow [2024-06-27 22:38:42,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7417, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7672, PETRI_PLACES=402, PETRI_TRANSITIONS=516} [2024-06-27 22:38:42,423 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-27 22:38:42,423 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 516 transitions, 7672 flow [2024-06-27 22:38:42,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:42,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:42,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:42,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 22:38:42,423 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:42,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash -183587040, now seen corresponding path program 2 times [2024-06-27 22:38:42,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:42,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083193544] [2024-06-27 22:38:42,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:42,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:46,061 INFO 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 22:38:46,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:46,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083193544] [2024-06-27 22:38:46,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083193544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:46,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:46,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:38:46,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126957788] [2024-06-27 22:38:46,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:46,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:38:46,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:46,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:38:46,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:38:46,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:38:46,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 516 transitions, 7672 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:46,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:46,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:38:46,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:47,720 INFO L124 PetriNetUnfolderBase]: 1552/3017 cut-off events. [2024-06-27 22:38:47,720 INFO L125 PetriNetUnfolderBase]: For 224307/224319 co-relation queries the response was YES. [2024-06-27 22:38:47,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22682 conditions, 3017 events. 1552/3017 cut-off events. For 224307/224319 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 20931 event pairs, 292 based on Foata normal form. 7/2729 useless extension candidates. Maximal degree in co-relation 22491. Up to 2383 conditions per place. [2024-06-27 22:38:47,759 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 387 selfloop transitions, 125 changer transitions 0/530 dead transitions. [2024-06-27 22:38:47,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 530 transitions, 8730 flow [2024-06-27 22:38:47,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:47,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:38:47,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 22:38:47,760 INFO L175 Difference]: Start difference. First operand has 402 places, 516 transitions, 7672 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:38:47,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 530 transitions, 8730 flow [2024-06-27 22:38:48,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 530 transitions, 8494 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:49,003 INFO L231 Difference]: Finished difference. Result has 405 places, 516 transitions, 7691 flow [2024-06-27 22:38:49,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7436, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7691, PETRI_PLACES=405, PETRI_TRANSITIONS=516} [2024-06-27 22:38:49,004 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2024-06-27 22:38:49,004 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 516 transitions, 7691 flow [2024-06-27 22:38:49,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:49,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:49,004 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 22:38:49,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 22:38:49,004 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:49,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:49,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1736771444, now seen corresponding path program 7 times [2024-06-27 22:38:49,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:49,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851329470] [2024-06-27 22:38:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:49,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:51,333 INFO 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 22:38:51,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:51,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851329470] [2024-06-27 22:38:51,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851329470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:51,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:51,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:51,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327782858] [2024-06-27 22:38:51,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:51,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:51,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:51,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:51,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:51,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:38:51,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 516 transitions, 7691 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:51,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:51,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:38:51,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:52,903 INFO L124 PetriNetUnfolderBase]: 1812/3401 cut-off events. [2024-06-27 22:38:52,903 INFO L125 PetriNetUnfolderBase]: For 238550/238550 co-relation queries the response was YES. [2024-06-27 22:38:52,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25696 conditions, 3401 events. 1812/3401 cut-off events. For 238550/238550 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 23171 event pairs, 303 based on Foata normal form. 2/3170 useless extension candidates. Maximal degree in co-relation 25504. Up to 2844 conditions per place. [2024-06-27 22:38:52,948 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 419 selfloop transitions, 108 changer transitions 0/536 dead transitions. [2024-06-27 22:38:52,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 536 transitions, 8931 flow [2024-06-27 22:38:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:52,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:38:52,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:38:52,950 INFO L175 Difference]: Start difference. First operand has 405 places, 516 transitions, 7691 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:38:52,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 536 transitions, 8931 flow [2024-06-27 22:38:54,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 536 transitions, 8635 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 22:38:54,272 INFO L231 Difference]: Finished difference. Result has 406 places, 518 transitions, 7715 flow [2024-06-27 22:38:54,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7395, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7715, PETRI_PLACES=406, PETRI_TRANSITIONS=518} [2024-06-27 22:38:54,273 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-27 22:38:54,273 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 518 transitions, 7715 flow [2024-06-27 22:38:54,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:54,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:54,273 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 22:38:54,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 22:38:54,273 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:54,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:54,273 INFO L85 PathProgramCache]: Analyzing trace with hash 2058034774, now seen corresponding path program 8 times [2024-06-27 22:38:54,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:54,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145119509] [2024-06-27 22:38:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:54,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:56,268 INFO 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 22:38:56,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:56,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145119509] [2024-06-27 22:38:56,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145119509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:56,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:56,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:38:56,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923433846] [2024-06-27 22:38:56,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:56,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:38:56,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:56,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:38:56,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:38:56,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:38:56,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 518 transitions, 7715 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:56,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:56,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:38:56,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:57,718 INFO L124 PetriNetUnfolderBase]: 1825/3423 cut-off events. [2024-06-27 22:38:57,719 INFO L125 PetriNetUnfolderBase]: For 244880/244880 co-relation queries the response was YES. [2024-06-27 22:38:57,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25910 conditions, 3423 events. 1825/3423 cut-off events. For 244880/244880 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 23364 event pairs, 320 based on Foata normal form. 2/3193 useless extension candidates. Maximal degree in co-relation 25717. Up to 2926 conditions per place. [2024-06-27 22:38:57,756 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 456 selfloop transitions, 73 changer transitions 0/538 dead transitions. [2024-06-27 22:38:57,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 538 transitions, 8963 flow [2024-06-27 22:38:57,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:57,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:38:57,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:38:57,757 INFO L175 Difference]: Start difference. First operand has 406 places, 518 transitions, 7715 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:38:57,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 538 transitions, 8963 flow [2024-06-27 22:38:59,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 538 transitions, 8661 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-27 22:38:59,126 INFO L231 Difference]: Finished difference. Result has 408 places, 520 transitions, 7667 flow [2024-06-27 22:38:59,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7413, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7667, PETRI_PLACES=408, PETRI_TRANSITIONS=520} [2024-06-27 22:38:59,126 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-27 22:38:59,126 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 520 transitions, 7667 flow [2024-06-27 22:38:59,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:59,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:59,127 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 22:38:59,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 22:38:59,127 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:59,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:59,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2057857144, now seen corresponding path program 9 times [2024-06-27 22:38:59,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:59,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644672059] [2024-06-27 22:38:59,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:59,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:00,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:00,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644672059] [2024-06-27 22:39:00,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644672059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:00,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:00,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:00,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404253149] [2024-06-27 22:39:00,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:00,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:00,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:00,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:00,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:00,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:39:00,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 520 transitions, 7667 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:00,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:00,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:39:00,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:02,138 INFO L124 PetriNetUnfolderBase]: 1838/3448 cut-off events. [2024-06-27 22:39:02,138 INFO L125 PetriNetUnfolderBase]: For 250152/250152 co-relation queries the response was YES. [2024-06-27 22:39:02,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26019 conditions, 3448 events. 1838/3448 cut-off events. For 250152/250152 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 23607 event pairs, 304 based on Foata normal form. 2/3217 useless extension candidates. Maximal degree in co-relation 25825. Up to 2923 conditions per place. [2024-06-27 22:39:02,185 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 460 selfloop transitions, 73 changer transitions 0/542 dead transitions. [2024-06-27 22:39:02,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 542 transitions, 8935 flow [2024-06-27 22:39:02,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:02,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:02,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:39:02,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:39:02,187 INFO L175 Difference]: Start difference. First operand has 408 places, 520 transitions, 7667 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:39:02,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 542 transitions, 8935 flow [2024-06-27 22:39:03,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 542 transitions, 8699 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-27 22:39:03,699 INFO L231 Difference]: Finished difference. Result has 410 places, 522 transitions, 7689 flow [2024-06-27 22:39:03,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7431, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7689, PETRI_PLACES=410, PETRI_TRANSITIONS=522} [2024-06-27 22:39:03,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 369 predicate places. [2024-06-27 22:39:03,700 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 522 transitions, 7689 flow [2024-06-27 22:39:03,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:03,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:03,701 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 22:39:03,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 22:39:03,701 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:03,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:03,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2064290884, now seen corresponding path program 10 times [2024-06-27 22:39:03,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:03,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898716401] [2024-06-27 22:39:03,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:03,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:06,009 INFO 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 22:39:06,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:06,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898716401] [2024-06-27 22:39:06,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898716401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:06,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:06,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:06,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873458673] [2024-06-27 22:39:06,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:06,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:06,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:06,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:06,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:06,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:39:06,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 522 transitions, 7689 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:06,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:06,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:39:06,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:07,604 INFO L124 PetriNetUnfolderBase]: 1851/3480 cut-off events. [2024-06-27 22:39:07,604 INFO L125 PetriNetUnfolderBase]: For 256355/256355 co-relation queries the response was YES. [2024-06-27 22:39:07,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26220 conditions, 3480 events. 1851/3480 cut-off events. For 256355/256355 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 23861 event pairs, 306 based on Foata normal form. 2/3245 useless extension candidates. Maximal degree in co-relation 26025. Up to 2960 conditions per place. [2024-06-27 22:39:07,646 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 454 selfloop transitions, 79 changer transitions 0/542 dead transitions. [2024-06-27 22:39:07,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 542 transitions, 8953 flow [2024-06-27 22:39:07,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:07,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:07,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:39:07,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 22:39:07,647 INFO L175 Difference]: Start difference. First operand has 410 places, 522 transitions, 7689 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:39:07,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 542 transitions, 8953 flow [2024-06-27 22:39:09,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 542 transitions, 8713 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-27 22:39:09,014 INFO L231 Difference]: Finished difference. Result has 411 places, 524 transitions, 7723 flow [2024-06-27 22:39:09,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7449, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7723, PETRI_PLACES=411, PETRI_TRANSITIONS=524} [2024-06-27 22:39:09,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-27 22:39:09,015 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 524 transitions, 7723 flow [2024-06-27 22:39:09,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:09,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:09,015 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 22:39:09,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 22:39:09,015 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:09,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:09,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2064537148, now seen corresponding path program 2 times [2024-06-27 22:39:09,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:09,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090648180] [2024-06-27 22:39:09,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:09,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:11,173 INFO 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 22:39:11,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:11,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090648180] [2024-06-27 22:39:11,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090648180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:11,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:11,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:11,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968624198] [2024-06-27 22:39:11,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:11,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:11,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:11,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:11,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:11,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:39:11,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 524 transitions, 7723 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:11,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:11,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:39:11,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:12,411 INFO L124 PetriNetUnfolderBase]: 1671/3279 cut-off events. [2024-06-27 22:39:12,412 INFO L125 PetriNetUnfolderBase]: For 325673/325685 co-relation queries the response was YES. [2024-06-27 22:39:12,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24484 conditions, 3279 events. 1671/3279 cut-off events. For 325673/325685 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 23217 event pairs, 348 based on Foata normal form. 16/2986 useless extension candidates. Maximal degree in co-relation 24289. Up to 2542 conditions per place. [2024-06-27 22:39:12,453 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 419 selfloop transitions, 106 changer transitions 0/544 dead transitions. [2024-06-27 22:39:12,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 544 transitions, 8949 flow [2024-06-27 22:39:12,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:12,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 22:39:12,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 22:39:12,455 INFO L175 Difference]: Start difference. First operand has 411 places, 524 transitions, 7723 flow. Second operand 10 states and 186 transitions. [2024-06-27 22:39:12,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 544 transitions, 8949 flow [2024-06-27 22:39:13,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 544 transitions, 8693 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-27 22:39:13,826 INFO L231 Difference]: Finished difference. Result has 413 places, 525 transitions, 7710 flow [2024-06-27 22:39:13,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7467, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7710, PETRI_PLACES=413, PETRI_TRANSITIONS=525} [2024-06-27 22:39:13,826 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-27 22:39:13,827 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 525 transitions, 7710 flow [2024-06-27 22:39:13,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:13,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:13,827 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 22:39:13,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 22:39:13,827 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:13,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1515133348, now seen corresponding path program 3 times [2024-06-27 22:39:13,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:13,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64268557] [2024-06-27 22:39:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:13,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:16,264 INFO 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 22:39:16,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:16,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64268557] [2024-06-27 22:39:16,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64268557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:16,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:16,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:16,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464760546] [2024-06-27 22:39:16,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:16,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:16,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:16,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:16,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:16,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:39:16,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 525 transitions, 7710 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 22:39:16,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:16,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:39:16,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:17,679 INFO L124 PetriNetUnfolderBase]: 1679/3298 cut-off events. [2024-06-27 22:39:17,680 INFO L125 PetriNetUnfolderBase]: For 256072/256084 co-relation queries the response was YES. [2024-06-27 22:39:17,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24513 conditions, 3298 events. 1679/3298 cut-off events. For 256072/256084 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 23408 event pairs, 342 based on Foata normal form. 7/2989 useless extension candidates. Maximal degree in co-relation 24317. Up to 2655 conditions per place. [2024-06-27 22:39:17,722 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 409 selfloop transitions, 113 changer transitions 0/540 dead transitions. [2024-06-27 22:39:17,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 540 transitions, 9086 flow [2024-06-27 22:39:17,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:39:17,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 22:39:17,723 INFO L175 Difference]: Start difference. First operand has 413 places, 525 transitions, 7710 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:39:17,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 540 transitions, 9086 flow [2024-06-27 22:39:19,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 540 transitions, 8837 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 22:39:19,240 INFO L231 Difference]: Finished difference. Result has 415 places, 527 transitions, 7738 flow [2024-06-27 22:39:19,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7461, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7738, PETRI_PLACES=415, PETRI_TRANSITIONS=527} [2024-06-27 22:39:19,241 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 374 predicate places. [2024-06-27 22:39:19,241 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 527 transitions, 7738 flow [2024-06-27 22:39:19,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 22:39:19,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:19,241 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 22:39:19,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 22:39:19,241 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:19,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:19,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1737009028, now seen corresponding path program 4 times [2024-06-27 22:39:19,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:19,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042489670] [2024-06-27 22:39:19,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:19,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:21,751 INFO 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 22:39:21,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:21,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042489670] [2024-06-27 22:39:21,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042489670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:21,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:21,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:21,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062721580] [2024-06-27 22:39:21,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:21,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:21,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:21,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:21,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:21,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:39:21,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 527 transitions, 7738 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:21,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:21,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:39:21,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:23,144 INFO L124 PetriNetUnfolderBase]: 1687/3310 cut-off events. [2024-06-27 22:39:23,145 INFO L125 PetriNetUnfolderBase]: For 259425/259437 co-relation queries the response was YES. [2024-06-27 22:39:23,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24622 conditions, 3310 events. 1687/3310 cut-off events. For 259425/259437 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 23488 event pairs, 337 based on Foata normal form. 7/2996 useless extension candidates. Maximal degree in co-relation 24426. Up to 2451 conditions per place. [2024-06-27 22:39:23,187 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 362 selfloop transitions, 164 changer transitions 0/544 dead transitions. [2024-06-27 22:39:23,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 544 transitions, 9642 flow [2024-06-27 22:39:23,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:23,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:39:23,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:39:23,188 INFO L175 Difference]: Start difference. First operand has 415 places, 527 transitions, 7738 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:39:23,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 544 transitions, 9642 flow [2024-06-27 22:39:24,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 544 transitions, 9386 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:39:24,920 INFO L231 Difference]: Finished difference. Result has 417 places, 529 transitions, 7859 flow [2024-06-27 22:39:24,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7482, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7859, PETRI_PLACES=417, PETRI_TRANSITIONS=529} [2024-06-27 22:39:24,920 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2024-06-27 22:39:24,920 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 529 transitions, 7859 flow [2024-06-27 22:39:24,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:24,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:24,920 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 22:39:24,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 22:39:24,921 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:24,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:24,921 INFO L85 PathProgramCache]: Analyzing trace with hash 971094596, now seen corresponding path program 3 times [2024-06-27 22:39:24,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:24,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289988387] [2024-06-27 22:39:24,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:24,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:27,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:27,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289988387] [2024-06-27 22:39:27,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289988387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:27,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:27,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:27,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334761629] [2024-06-27 22:39:27,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:27,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:27,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:27,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:27,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:27,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:39:27,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 529 transitions, 7859 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:27,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:27,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:39:27,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:28,543 INFO L124 PetriNetUnfolderBase]: 1703/3347 cut-off events. [2024-06-27 22:39:28,543 INFO L125 PetriNetUnfolderBase]: For 273036/273048 co-relation queries the response was YES. [2024-06-27 22:39:28,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25108 conditions, 3347 events. 1703/3347 cut-off events. For 273036/273048 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 23835 event pairs, 354 based on Foata normal form. 8/3032 useless extension candidates. Maximal degree in co-relation 24911. Up to 2574 conditions per place. [2024-06-27 22:39:28,589 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 385 selfloop transitions, 143 changer transitions 0/546 dead transitions. [2024-06-27 22:39:28,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 546 transitions, 9047 flow [2024-06-27 22:39:28,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:28,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:39:28,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:39:28,590 INFO L175 Difference]: Start difference. First operand has 417 places, 529 transitions, 7859 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:39:28,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 546 transitions, 9047 flow [2024-06-27 22:39:30,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 546 transitions, 8689 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:39:30,020 INFO L231 Difference]: Finished difference. Result has 419 places, 530 transitions, 7819 flow [2024-06-27 22:39:30,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7501, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7819, PETRI_PLACES=419, PETRI_TRANSITIONS=530} [2024-06-27 22:39:30,021 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-27 22:39:30,021 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 530 transitions, 7819 flow [2024-06-27 22:39:30,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:30,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:30,021 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 22:39:30,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 22:39:30,021 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:30,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:30,022 INFO L85 PathProgramCache]: Analyzing trace with hash 301710898, now seen corresponding path program 5 times [2024-06-27 22:39:30,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:30,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705061844] [2024-06-27 22:39:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:30,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:33,954 INFO 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 22:39:33,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:33,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705061844] [2024-06-27 22:39:33,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705061844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:33,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:33,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:39:33,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382005806] [2024-06-27 22:39:33,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:33,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:39:33,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:33,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:39:33,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:39:34,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:39:34,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 530 transitions, 7819 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:34,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:34,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:39:34,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:35,723 INFO L124 PetriNetUnfolderBase]: 1702/3346 cut-off events. [2024-06-27 22:39:35,723 INFO L125 PetriNetUnfolderBase]: For 258820/258832 co-relation queries the response was YES. [2024-06-27 22:39:35,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24803 conditions, 3346 events. 1702/3346 cut-off events. For 258820/258832 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 23819 event pairs, 344 based on Foata normal form. 7/3030 useless extension candidates. Maximal degree in co-relation 24605. Up to 2559 conditions per place. [2024-06-27 22:39:35,763 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 378 selfloop transitions, 149 changer transitions 0/545 dead transitions. [2024-06-27 22:39:35,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 545 transitions, 8925 flow [2024-06-27 22:39:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:35,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:39:35,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:39:35,764 INFO L175 Difference]: Start difference. First operand has 419 places, 530 transitions, 7819 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:39:35,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 545 transitions, 8925 flow [2024-06-27 22:39:37,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 545 transitions, 8601 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 22:39:37,185 INFO L231 Difference]: Finished difference. Result has 424 places, 533 transitions, 7917 flow [2024-06-27 22:39:37,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7495, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7917, PETRI_PLACES=424, PETRI_TRANSITIONS=533} [2024-06-27 22:39:37,186 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-27 22:39:37,186 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 533 transitions, 7917 flow [2024-06-27 22:39:37,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:37,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:37,186 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 22:39:37,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 22:39:37,186 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:37,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:37,186 INFO L85 PathProgramCache]: Analyzing trace with hash 80296498, now seen corresponding path program 6 times [2024-06-27 22:39:37,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:37,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938660984] [2024-06-27 22:39:37,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:37,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:39,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:39,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:39,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938660984] [2024-06-27 22:39:39,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938660984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:39,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:39,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:39,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954981065] [2024-06-27 22:39:39,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:39,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:39,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:39,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:39,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:40,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:39:40,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 533 transitions, 7917 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:40,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:40,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:39:40,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:41,384 INFO L124 PetriNetUnfolderBase]: 1699/3333 cut-off events. [2024-06-27 22:39:41,385 INFO L125 PetriNetUnfolderBase]: For 251259/251271 co-relation queries the response was YES. [2024-06-27 22:39:41,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24688 conditions, 3333 events. 1699/3333 cut-off events. For 251259/251271 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 23664 event pairs, 360 based on Foata normal form. 7/3020 useless extension candidates. Maximal degree in co-relation 24486. Up to 2706 conditions per place. [2024-06-27 22:39:41,432 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 415 selfloop transitions, 112 changer transitions 0/545 dead transitions. [2024-06-27 22:39:41,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 545 transitions, 8999 flow [2024-06-27 22:39:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:41,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:39:41,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:39:41,433 INFO L175 Difference]: Start difference. First operand has 424 places, 533 transitions, 7917 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:39:41,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 545 transitions, 8999 flow [2024-06-27 22:39:43,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 545 transitions, 8730 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 22:39:43,220 INFO L231 Difference]: Finished difference. Result has 426 places, 533 transitions, 7877 flow [2024-06-27 22:39:43,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7648, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7877, PETRI_PLACES=426, PETRI_TRANSITIONS=533} [2024-06-27 22:39:43,221 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 385 predicate places. [2024-06-27 22:39:43,221 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 533 transitions, 7877 flow [2024-06-27 22:39:43,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:43,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:43,221 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 22:39:43,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 22:39:43,221 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:43,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:43,222 INFO L85 PathProgramCache]: Analyzing trace with hash 979436696, now seen corresponding path program 4 times [2024-06-27 22:39:43,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:43,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427354742] [2024-06-27 22:39:43,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:43,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:45,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:45,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427354742] [2024-06-27 22:39:45,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427354742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:45,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:45,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:45,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784440622] [2024-06-27 22:39:45,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:45,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:45,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:45,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:45,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:45,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:39:45,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 533 transitions, 7877 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:45,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:45,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:39:45,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:47,251 INFO L124 PetriNetUnfolderBase]: 1734/3400 cut-off events. [2024-06-27 22:39:47,251 INFO L125 PetriNetUnfolderBase]: For 285377/285392 co-relation queries the response was YES. [2024-06-27 22:39:47,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25494 conditions, 3400 events. 1734/3400 cut-off events. For 285377/285392 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 24341 event pairs, 354 based on Foata normal form. 8/3086 useless extension candidates. Maximal degree in co-relation 25291. Up to 2464 conditions per place. [2024-06-27 22:39:47,296 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 404 selfloop transitions, 139 changer transitions 0/561 dead transitions. [2024-06-27 22:39:47,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 561 transitions, 9543 flow [2024-06-27 22:39:47,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:47,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:47,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:39:47,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-27 22:39:47,297 INFO L175 Difference]: Start difference. First operand has 426 places, 533 transitions, 7877 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:39:47,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 561 transitions, 9543 flow [2024-06-27 22:39:48,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 561 transitions, 9196 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 22:39:48,994 INFO L231 Difference]: Finished difference. Result has 427 places, 537 transitions, 7945 flow [2024-06-27 22:39:48,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7535, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7945, PETRI_PLACES=427, PETRI_TRANSITIONS=537} [2024-06-27 22:39:48,994 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 386 predicate places. [2024-06-27 22:39:48,994 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 537 transitions, 7945 flow [2024-06-27 22:39:48,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:48,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:48,995 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 22:39:48,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 22:39:48,995 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:48,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:48,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1745349578, now seen corresponding path program 5 times [2024-06-27 22:39:48,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:48,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845161948] [2024-06-27 22:39:48,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:48,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:51,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:51,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845161948] [2024-06-27 22:39:51,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845161948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:51,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:51,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:51,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036572500] [2024-06-27 22:39:51,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:51,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:51,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:51,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:51,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:51,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:39:51,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 537 transitions, 7945 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:51,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:51,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:39:51,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:52,772 INFO L124 PetriNetUnfolderBase]: 1750/3439 cut-off events. [2024-06-27 22:39:52,772 INFO L125 PetriNetUnfolderBase]: For 291345/291360 co-relation queries the response was YES. [2024-06-27 22:39:52,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26032 conditions, 3439 events. 1750/3439 cut-off events. For 291345/291360 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 24714 event pairs, 370 based on Foata normal form. 8/3121 useless extension candidates. Maximal degree in co-relation 25828. Up to 2660 conditions per place. [2024-06-27 22:39:52,819 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 365 selfloop transitions, 170 changer transitions 0/554 dead transitions. [2024-06-27 22:39:52,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 554 transitions, 9151 flow [2024-06-27 22:39:52,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:52,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:52,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:39:52,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:39:52,820 INFO L175 Difference]: Start difference. First operand has 427 places, 537 transitions, 7945 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:39:52,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 554 transitions, 9151 flow [2024-06-27 22:39:54,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 554 transitions, 8979 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 22:39:54,594 INFO L231 Difference]: Finished difference. Result has 433 places, 538 transitions, 8149 flow [2024-06-27 22:39:54,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7773, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8149, PETRI_PLACES=433, PETRI_TRANSITIONS=538} [2024-06-27 22:39:54,595 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-27 22:39:54,595 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 538 transitions, 8149 flow [2024-06-27 22:39:54,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:54,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:54,595 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 22:39:54,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 22:39:54,596 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:54,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1745061278, now seen corresponding path program 6 times [2024-06-27 22:39:54,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:54,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039085266] [2024-06-27 22:39:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:54,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:56,896 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 22:39:56,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:56,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039085266] [2024-06-27 22:39:56,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039085266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:56,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:56,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:56,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096529380] [2024-06-27 22:39:56,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:56,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:56,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:56,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:56,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:57,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:39:57,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 538 transitions, 8149 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:57,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:57,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:39:57,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:58,393 INFO L124 PetriNetUnfolderBase]: 1747/3450 cut-off events. [2024-06-27 22:39:58,393 INFO L125 PetriNetUnfolderBase]: For 275819/275831 co-relation queries the response was YES. [2024-06-27 22:39:58,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26016 conditions, 3450 events. 1747/3450 cut-off events. For 275819/275831 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 24801 event pairs, 369 based on Foata normal form. 8/3129 useless extension candidates. Maximal degree in co-relation 25809. Up to 2655 conditions per place. [2024-06-27 22:39:58,431 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 371 selfloop transitions, 165 changer transitions 0/554 dead transitions. [2024-06-27 22:39:58,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 554 transitions, 9327 flow [2024-06-27 22:39:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:58,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:39:58,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:39:58,432 INFO L175 Difference]: Start difference. First operand has 433 places, 538 transitions, 8149 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:39:58,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 554 transitions, 9327 flow [2024-06-27 22:40:00,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 554 transitions, 8967 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 22:40:00,011 INFO L231 Difference]: Finished difference. Result has 435 places, 538 transitions, 8123 flow [2024-06-27 22:40:00,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7789, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8123, PETRI_PLACES=435, PETRI_TRANSITIONS=538} [2024-06-27 22:40:00,012 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 394 predicate places. [2024-06-27 22:40:00,012 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 538 transitions, 8123 flow [2024-06-27 22:40:00,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:00,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:00,012 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 22:40:00,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 22:40:00,013 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:00,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:00,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1745052598, now seen corresponding path program 7 times [2024-06-27 22:40:00,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:00,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435438699] [2024-06-27 22:40:00,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:00,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:02,484 INFO 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 22:40:02,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:02,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435438699] [2024-06-27 22:40:02,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435438699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:02,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:02,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:40:02,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123567243] [2024-06-27 22:40:02,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:02,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:40:02,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:02,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:40:02,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:40:02,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:40:02,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 538 transitions, 8123 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:02,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:02,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:40:02,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:03,994 INFO L124 PetriNetUnfolderBase]: 1745/3456 cut-off events. [2024-06-27 22:40:03,995 INFO L125 PetriNetUnfolderBase]: For 260326/260338 co-relation queries the response was YES. [2024-06-27 22:40:04,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25735 conditions, 3456 events. 1745/3456 cut-off events. For 260326/260338 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 24921 event pairs, 358 based on Foata normal form. 7/3130 useless extension candidates. Maximal degree in co-relation 25527. Up to 2561 conditions per place. [2024-06-27 22:40:04,043 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 333 selfloop transitions, 199 changer transitions 0/550 dead transitions. [2024-06-27 22:40:04,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 550 transitions, 9215 flow [2024-06-27 22:40:04,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:40:04,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 22:40:04,044 INFO L175 Difference]: Start difference. First operand has 435 places, 538 transitions, 8123 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:40:04,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 550 transitions, 9215 flow [2024-06-27 22:40:05,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 550 transitions, 8847 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 22:40:05,800 INFO L231 Difference]: Finished difference. Result has 437 places, 538 transitions, 8158 flow [2024-06-27 22:40:05,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7755, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8158, PETRI_PLACES=437, PETRI_TRANSITIONS=538} [2024-06-27 22:40:05,801 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-27 22:40:05,801 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 538 transitions, 8158 flow [2024-06-27 22:40:05,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:05,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:05,802 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 22:40:05,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 22:40:05,802 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:05,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:05,802 INFO L85 PathProgramCache]: Analyzing trace with hash 64645906, now seen corresponding path program 11 times [2024-06-27 22:40:05,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:05,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638184001] [2024-06-27 22:40:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:05,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:08,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:08,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638184001] [2024-06-27 22:40:08,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638184001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:08,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:08,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:08,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388074324] [2024-06-27 22:40:08,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:08,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:08,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:08,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:08,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:40:08,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 538 transitions, 8158 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:08,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:08,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:40:08,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:10,114 INFO L124 PetriNetUnfolderBase]: 2011/3834 cut-off events. [2024-06-27 22:40:10,115 INFO L125 PetriNetUnfolderBase]: For 277952/277952 co-relation queries the response was YES. [2024-06-27 22:40:10,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28858 conditions, 3834 events. 2011/3834 cut-off events. For 277952/277952 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 27115 event pairs, 376 based on Foata normal form. 2/3576 useless extension candidates. Maximal degree in co-relation 28649. Up to 3073 conditions per place. [2024-06-27 22:40:10,166 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 394 selfloop transitions, 155 changer transitions 0/558 dead transitions. [2024-06-27 22:40:10,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 558 transitions, 9464 flow [2024-06-27 22:40:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:40:10,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:40:10,168 INFO L175 Difference]: Start difference. First operand has 437 places, 538 transitions, 8158 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:40:10,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 558 transitions, 9464 flow [2024-06-27 22:40:12,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 558 transitions, 9053 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 22:40:12,190 INFO L231 Difference]: Finished difference. Result has 438 places, 540 transitions, 8177 flow [2024-06-27 22:40:12,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7747, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8177, PETRI_PLACES=438, PETRI_TRANSITIONS=540} [2024-06-27 22:40:12,191 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 397 predicate places. [2024-06-27 22:40:12,191 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 540 transitions, 8177 flow [2024-06-27 22:40:12,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:12,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:12,191 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 22:40:12,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 22:40:12,191 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:12,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:12,191 INFO L85 PathProgramCache]: Analyzing trace with hash 162537776, now seen corresponding path program 12 times [2024-06-27 22:40:12,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:12,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50838265] [2024-06-27 22:40:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:12,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:15,116 INFO 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 22:40:15,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:15,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50838265] [2024-06-27 22:40:15,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50838265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:15,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:15,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:40:15,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090109164] [2024-06-27 22:40:15,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:15,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:40:15,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:15,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:40:15,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:40:15,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:40:15,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 540 transitions, 8177 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:15,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:15,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:40:15,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:16,826 INFO L124 PetriNetUnfolderBase]: 2024/3867 cut-off events. [2024-06-27 22:40:16,826 INFO L125 PetriNetUnfolderBase]: For 287554/287554 co-relation queries the response was YES. [2024-06-27 22:40:16,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29107 conditions, 3867 events. 2024/3867 cut-off events. For 287554/287554 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 27410 event pairs, 365 based on Foata normal form. 2/3604 useless extension candidates. Maximal degree in co-relation 28896. Up to 3197 conditions per place. [2024-06-27 22:40:16,877 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 445 selfloop transitions, 106 changer transitions 0/560 dead transitions. [2024-06-27 22:40:16,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 560 transitions, 9491 flow [2024-06-27 22:40:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:16,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:16,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:40:16,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:40:16,878 INFO L175 Difference]: Start difference. First operand has 438 places, 540 transitions, 8177 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:40:16,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 560 transitions, 9491 flow [2024-06-27 22:40:18,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 560 transitions, 9079 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-27 22:40:18,903 INFO L231 Difference]: Finished difference. Result has 441 places, 542 transitions, 8100 flow [2024-06-27 22:40:18,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7765, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8100, PETRI_PLACES=441, PETRI_TRANSITIONS=542} [2024-06-27 22:40:18,904 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 400 predicate places. [2024-06-27 22:40:18,904 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 542 transitions, 8100 flow [2024-06-27 22:40:18,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:18,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:18,904 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 22:40:18,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 22:40:18,905 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:18,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:18,905 INFO L85 PathProgramCache]: Analyzing trace with hash 739932740, now seen corresponding path program 13 times [2024-06-27 22:40:18,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:18,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341457745] [2024-06-27 22:40:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:18,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:21,977 INFO 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 22:40:21,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:21,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341457745] [2024-06-27 22:40:21,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341457745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:21,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:21,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:40:21,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354684010] [2024-06-27 22:40:21,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:21,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:40:21,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:21,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:40:21,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:40:22,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:40:22,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 542 transitions, 8100 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:22,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:22,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:40:22,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:23,654 INFO L124 PetriNetUnfolderBase]: 2037/3891 cut-off events. [2024-06-27 22:40:23,654 INFO L125 PetriNetUnfolderBase]: For 293532/293532 co-relation queries the response was YES. [2024-06-27 22:40:23,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29192 conditions, 3891 events. 2037/3891 cut-off events. For 293532/293532 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 27612 event pairs, 366 based on Foata normal form. 2/3627 useless extension candidates. Maximal degree in co-relation 28980. Up to 3274 conditions per place. [2024-06-27 22:40:23,706 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 463 selfloop transitions, 90 changer transitions 0/562 dead transitions. [2024-06-27 22:40:23,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 562 transitions, 9422 flow [2024-06-27 22:40:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:23,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:23,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 22:40:23,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 22:40:23,708 INFO L175 Difference]: Start difference. First operand has 441 places, 542 transitions, 8100 flow. Second operand 11 states and 177 transitions. [2024-06-27 22:40:23,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 562 transitions, 9422 flow [2024-06-27 22:40:25,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 562 transitions, 9103 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-27 22:40:25,848 INFO L231 Difference]: Finished difference. Result has 443 places, 544 transitions, 8088 flow [2024-06-27 22:40:25,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7781, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8088, PETRI_PLACES=443, PETRI_TRANSITIONS=544} [2024-06-27 22:40:25,849 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-27 22:40:25,849 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 544 transitions, 8088 flow [2024-06-27 22:40:25,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:25,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:25,849 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 22:40:25,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 22:40:25,849 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:25,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash 733503650, now seen corresponding path program 14 times [2024-06-27 22:40:25,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:25,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926474587] [2024-06-27 22:40:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:25,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:28,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:28,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926474587] [2024-06-27 22:40:28,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926474587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:28,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:28,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:28,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724015829] [2024-06-27 22:40:28,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:28,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:28,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:28,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:28,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:28,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:40:28,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 544 transitions, 8088 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:28,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:28,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:40:28,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:29,524 INFO L124 PetriNetUnfolderBase]: 2054/3921 cut-off events. [2024-06-27 22:40:29,524 INFO L125 PetriNetUnfolderBase]: For 298615/298615 co-relation queries the response was YES. [2024-06-27 22:40:29,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29440 conditions, 3921 events. 2054/3921 cut-off events. For 298615/298615 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 27885 event pairs, 387 based on Foata normal form. 2/3659 useless extension candidates. Maximal degree in co-relation 29227. Up to 3270 conditions per place. [2024-06-27 22:40:29,579 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 458 selfloop transitions, 98 changer transitions 0/565 dead transitions. [2024-06-27 22:40:29,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 565 transitions, 9422 flow [2024-06-27 22:40:29,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:29,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:29,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 22:40:29,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 22:40:29,580 INFO L175 Difference]: Start difference. First operand has 443 places, 544 transitions, 8088 flow. Second operand 11 states and 178 transitions. [2024-06-27 22:40:29,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 565 transitions, 9422 flow [2024-06-27 22:40:31,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 565 transitions, 9131 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-27 22:40:31,593 INFO L231 Difference]: Finished difference. Result has 445 places, 545 transitions, 8047 flow [2024-06-27 22:40:31,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7797, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8047, PETRI_PLACES=445, PETRI_TRANSITIONS=545} [2024-06-27 22:40:31,594 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-27 22:40:31,594 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 545 transitions, 8047 flow [2024-06-27 22:40:31,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:31,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:31,594 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 22:40:31,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 22:40:31,594 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:31,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:31,594 INFO L85 PathProgramCache]: Analyzing trace with hash 733499000, now seen corresponding path program 15 times [2024-06-27 22:40:31,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:31,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085188142] [2024-06-27 22:40:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:31,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:33,477 INFO 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 22:40:33,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:33,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085188142] [2024-06-27 22:40:33,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085188142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:33,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:33,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:33,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317249797] [2024-06-27 22:40:33,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:33,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:33,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:33,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:33,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:33,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:40:33,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 545 transitions, 8047 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:33,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:33,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:40:33,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:35,112 INFO L124 PetriNetUnfolderBase]: 2067/3944 cut-off events. [2024-06-27 22:40:35,112 INFO L125 PetriNetUnfolderBase]: For 301610/301610 co-relation queries the response was YES. [2024-06-27 22:40:35,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29607 conditions, 3944 events. 2067/3944 cut-off events. For 301610/301610 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 28157 event pairs, 387 based on Foata normal form. 2/3682 useless extension candidates. Maximal degree in co-relation 29393. Up to 3283 conditions per place. [2024-06-27 22:40:35,160 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 459 selfloop transitions, 99 changer transitions 0/567 dead transitions. [2024-06-27 22:40:35,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 567 transitions, 9393 flow [2024-06-27 22:40:35,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:35,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:40:35,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:40:35,161 INFO L175 Difference]: Start difference. First operand has 445 places, 545 transitions, 8047 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:40:35,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 567 transitions, 9393 flow [2024-06-27 22:40:37,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 567 transitions, 9185 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 22:40:37,133 INFO L231 Difference]: Finished difference. Result has 447 places, 547 transitions, 8170 flow [2024-06-27 22:40:37,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7839, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8170, PETRI_PLACES=447, PETRI_TRANSITIONS=547} [2024-06-27 22:40:37,133 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 406 predicate places. [2024-06-27 22:40:37,133 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 547 transitions, 8170 flow [2024-06-27 22:40:37,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:37,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:37,134 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 22:40:37,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 22:40:37,134 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:37,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:37,134 INFO L85 PathProgramCache]: Analyzing trace with hash 961824044, now seen corresponding path program 7 times [2024-06-27 22:40:37,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:37,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421559828] [2024-06-27 22:40:37,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:37,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:39,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:39,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:39,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421559828] [2024-06-27 22:40:39,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421559828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:39,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:39,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:40:39,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672692854] [2024-06-27 22:40:39,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:39,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:40:39,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:39,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:40:39,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:40:39,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:40:39,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 547 transitions, 8170 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:39,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:39,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:40:39,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:40,765 INFO L124 PetriNetUnfolderBase]: 1816/3589 cut-off events. [2024-06-27 22:40:40,765 INFO L125 PetriNetUnfolderBase]: For 304759/304774 co-relation queries the response was YES. [2024-06-27 22:40:40,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26940 conditions, 3589 events. 1816/3589 cut-off events. For 304759/304774 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 26168 event pairs, 388 based on Foata normal form. 8/3255 useless extension candidates. Maximal degree in co-relation 26725. Up to 2935 conditions per place. [2024-06-27 22:40:40,814 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 453 selfloop transitions, 93 changer transitions 0/564 dead transitions. [2024-06-27 22:40:40,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 564 transitions, 9418 flow [2024-06-27 22:40:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:40:40,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:40:40,815 INFO L175 Difference]: Start difference. First operand has 447 places, 547 transitions, 8170 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:40:40,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 564 transitions, 9418 flow [2024-06-27 22:40:42,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 564 transitions, 9103 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-27 22:40:42,887 INFO L231 Difference]: Finished difference. Result has 449 places, 550 transitions, 8105 flow [2024-06-27 22:40:42,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7855, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8105, PETRI_PLACES=449, PETRI_TRANSITIONS=550} [2024-06-27 22:40:42,887 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 408 predicate places. [2024-06-27 22:40:42,887 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 550 transitions, 8105 flow [2024-06-27 22:40:42,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:42,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:42,887 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 22:40:42,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 22:40:42,888 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:42,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:42,888 INFO L85 PathProgramCache]: Analyzing trace with hash 961815364, now seen corresponding path program 8 times [2024-06-27 22:40:42,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:42,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676237306] [2024-06-27 22:40:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:42,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:45,635 INFO 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 22:40:45,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:45,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676237306] [2024-06-27 22:40:45,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676237306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:45,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:45,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:40:45,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410545003] [2024-06-27 22:40:45,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:45,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:40:45,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:45,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:40:45,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:40:45,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:40:45,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 550 transitions, 8105 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:45,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:45,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:40:45,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:47,248 INFO L124 PetriNetUnfolderBase]: 1821/3588 cut-off events. [2024-06-27 22:40:47,248 INFO L125 PetriNetUnfolderBase]: For 293476/293491 co-relation queries the response was YES. [2024-06-27 22:40:47,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26798 conditions, 3588 events. 1821/3588 cut-off events. For 293476/293491 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 26088 event pairs, 398 based on Foata normal form. 7/3254 useless extension candidates. Maximal degree in co-relation 26582. Up to 2938 conditions per place. [2024-06-27 22:40:47,297 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 442 selfloop transitions, 102 changer transitions 0/562 dead transitions. [2024-06-27 22:40:47,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 562 transitions, 9257 flow [2024-06-27 22:40:47,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:47,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:47,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:40:47,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 22:40:47,298 INFO L175 Difference]: Start difference. First operand has 449 places, 550 transitions, 8105 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:40:47,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 562 transitions, 9257 flow [2024-06-27 22:40:49,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 562 transitions, 9050 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 22:40:49,258 INFO L231 Difference]: Finished difference. Result has 454 places, 552 transitions, 8153 flow [2024-06-27 22:40:49,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7898, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8153, PETRI_PLACES=454, PETRI_TRANSITIONS=552} [2024-06-27 22:40:49,259 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-27 22:40:49,259 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 552 transitions, 8153 flow [2024-06-27 22:40:49,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:49,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:49,260 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 22:40:49,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 22:40:49,261 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:49,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:49,261 INFO L85 PathProgramCache]: Analyzing trace with hash 72935740, now seen corresponding path program 8 times [2024-06-27 22:40:49,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:49,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915721544] [2024-06-27 22:40:49,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:49,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:51,410 INFO 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 22:40:51,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:51,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915721544] [2024-06-27 22:40:51,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915721544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:51,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:51,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:51,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187791974] [2024-06-27 22:40:51,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:51,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:51,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:51,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:51,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:51,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:40:51,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 552 transitions, 8153 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:51,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:51,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:40:51,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:52,661 INFO L124 PetriNetUnfolderBase]: 1842/3643 cut-off events. [2024-06-27 22:40:52,661 INFO L125 PetriNetUnfolderBase]: For 310037/310052 co-relation queries the response was YES. [2024-06-27 22:40:52,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27139 conditions, 3643 events. 1842/3643 cut-off events. For 310037/310052 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 26658 event pairs, 392 based on Foata normal form. 10/3304 useless extension candidates. Maximal degree in co-relation 26922. Up to 2783 conditions per place. [2024-06-27 22:40:52,711 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 394 selfloop transitions, 162 changer transitions 0/575 dead transitions. [2024-06-27 22:40:52,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 575 transitions, 9561 flow [2024-06-27 22:40:52,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:52,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:40:52,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:40:52,712 INFO L175 Difference]: Start difference. First operand has 454 places, 552 transitions, 8153 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:40:52,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 575 transitions, 9561 flow [2024-06-27 22:40:54,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 575 transitions, 9331 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 22:40:54,976 INFO L231 Difference]: Finished difference. Result has 460 places, 561 transitions, 8474 flow [2024-06-27 22:40:54,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7923, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8474, PETRI_PLACES=460, PETRI_TRANSITIONS=561} [2024-06-27 22:40:54,977 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 419 predicate places. [2024-06-27 22:40:54,977 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 561 transitions, 8474 flow [2024-06-27 22:40:54,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:54,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:54,978 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 22:40:54,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 22:40:54,978 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:54,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:54,978 INFO L85 PathProgramCache]: Analyzing trace with hash 961584724, now seen corresponding path program 9 times [2024-06-27 22:40:54,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:54,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031147358] [2024-06-27 22:40:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:54,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:57,618 INFO 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 22:40:57,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:57,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031147358] [2024-06-27 22:40:57,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031147358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:57,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:57,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:40:57,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582212869] [2024-06-27 22:40:57,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:57,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:40:57,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:57,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:40:57,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:40:57,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:40:57,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 561 transitions, 8474 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:57,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:57,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:40:57,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:59,468 INFO L124 PetriNetUnfolderBase]: 1839/3640 cut-off events. [2024-06-27 22:40:59,468 INFO L125 PetriNetUnfolderBase]: For 290590/290605 co-relation queries the response was YES. [2024-06-27 22:40:59,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27203 conditions, 3640 events. 1839/3640 cut-off events. For 290590/290605 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 26619 event pairs, 412 based on Foata normal form. 7/3301 useless extension candidates. Maximal degree in co-relation 26982. Up to 2905 conditions per place. [2024-06-27 22:40:59,516 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 425 selfloop transitions, 130 changer transitions 0/573 dead transitions. [2024-06-27 22:40:59,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 573 transitions, 10190 flow [2024-06-27 22:40:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:59,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:40:59,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-27 22:40:59,517 INFO L175 Difference]: Start difference. First operand has 460 places, 561 transitions, 8474 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:40:59,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 573 transitions, 10190 flow [2024-06-27 22:41:01,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 573 transitions, 9849 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-06-27 22:41:01,654 INFO L231 Difference]: Finished difference. Result has 468 places, 561 transitions, 8398 flow [2024-06-27 22:41:01,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8133, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8398, PETRI_PLACES=468, PETRI_TRANSITIONS=561} [2024-06-27 22:41:01,655 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 427 predicate places. [2024-06-27 22:41:01,655 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 561 transitions, 8398 flow [2024-06-27 22:41:01,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:01,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:01,655 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 22:41:01,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 22:41:01,655 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:01,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:01,655 INFO L85 PathProgramCache]: Analyzing trace with hash 969858934, now seen corresponding path program 10 times [2024-06-27 22:41:01,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:01,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821964064] [2024-06-27 22:41:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:01,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:04,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:04,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821964064] [2024-06-27 22:41:04,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821964064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:04,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:04,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:41:04,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403501461] [2024-06-27 22:41:04,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:04,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:41:04,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:04,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:41:04,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:41:04,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:41:04,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 561 transitions, 8398 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:04,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:04,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:41:04,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:06,041 INFO L124 PetriNetUnfolderBase]: 1838/3637 cut-off events. [2024-06-27 22:41:06,041 INFO L125 PetriNetUnfolderBase]: For 282645/282660 co-relation queries the response was YES. [2024-06-27 22:41:06,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26933 conditions, 3637 events. 1838/3637 cut-off events. For 282645/282660 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 26632 event pairs, 396 based on Foata normal form. 7/3295 useless extension candidates. Maximal degree in co-relation 26709. Up to 2970 conditions per place. [2024-06-27 22:41:06,097 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 449 selfloop transitions, 104 changer transitions 0/571 dead transitions. [2024-06-27 22:41:06,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 571 transitions, 9526 flow [2024-06-27 22:41:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:41:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:41:06,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:41:06,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:41:06,098 INFO L175 Difference]: Start difference. First operand has 468 places, 561 transitions, 8398 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:41:06,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 571 transitions, 9526 flow [2024-06-27 22:41:08,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 571 transitions, 9206 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-27 22:41:08,464 INFO L231 Difference]: Finished difference. Result has 469 places, 561 transitions, 8291 flow [2024-06-27 22:41:08,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8078, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8291, PETRI_PLACES=469, PETRI_TRANSITIONS=561} [2024-06-27 22:41:08,465 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 428 predicate places. [2024-06-27 22:41:08,465 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 561 transitions, 8291 flow [2024-06-27 22:41:08,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:08,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:08,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:08,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 22:41:08,466 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:08,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash 64892170, now seen corresponding path program 9 times [2024-06-27 22:41:08,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:08,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965517303] [2024-06-27 22:41:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:08,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:10,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:10,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965517303] [2024-06-27 22:41:10,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965517303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:10,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:10,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:10,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679013966] [2024-06-27 22:41:10,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:10,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:10,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:10,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:10,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:10,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:41:10,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 561 transitions, 8291 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:10,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:10,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:41:10,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:12,043 INFO L124 PetriNetUnfolderBase]: 1854/3674 cut-off events. [2024-06-27 22:41:12,043 INFO L125 PetriNetUnfolderBase]: For 298129/298144 co-relation queries the response was YES. [2024-06-27 22:41:12,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27149 conditions, 3674 events. 1854/3674 cut-off events. For 298129/298144 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 26979 event pairs, 409 based on Foata normal form. 10/3333 useless extension candidates. Maximal degree in co-relation 26925. Up to 2806 conditions per place. [2024-06-27 22:41:12,092 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 394 selfloop transitions, 163 changer transitions 0/576 dead transitions. [2024-06-27 22:41:12,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 576 transitions, 9547 flow [2024-06-27 22:41:12,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:12,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:41:12,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-27 22:41:12,094 INFO L175 Difference]: Start difference. First operand has 469 places, 561 transitions, 8291 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:41:12,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 576 transitions, 9547 flow [2024-06-27 22:41:14,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 576 transitions, 9330 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 22:41:14,480 INFO L231 Difference]: Finished difference. Result has 469 places, 562 transitions, 8440 flow [2024-06-27 22:41:14,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8074, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8440, PETRI_PLACES=469, PETRI_TRANSITIONS=562} [2024-06-27 22:41:14,481 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 428 predicate places. [2024-06-27 22:41:14,481 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 562 transitions, 8440 flow [2024-06-27 22:41:14,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:14,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:14,481 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 22:41:14,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 22:41:14,481 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:14,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:14,481 INFO L85 PathProgramCache]: Analyzing trace with hash 64883490, now seen corresponding path program 11 times [2024-06-27 22:41:14,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:14,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582826938] [2024-06-27 22:41:14,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:14,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:17,150 INFO 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 22:41:17,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:17,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582826938] [2024-06-27 22:41:17,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582826938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:17,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:17,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:17,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109382322] [2024-06-27 22:41:17,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:17,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:17,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:17,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:17,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:17,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:41:17,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 562 transitions, 8440 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 22:41:17,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:17,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:41:17,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:18,652 INFO L124 PetriNetUnfolderBase]: 1862/3685 cut-off events. [2024-06-27 22:41:18,652 INFO L125 PetriNetUnfolderBase]: For 291380/291395 co-relation queries the response was YES. [2024-06-27 22:41:18,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27467 conditions, 3685 events. 1862/3685 cut-off events. For 291380/291395 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 27070 event pairs, 409 based on Foata normal form. 8/3338 useless extension candidates. Maximal degree in co-relation 27242. Up to 2548 conditions per place. [2024-06-27 22:41:18,706 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 330 selfloop transitions, 229 changer transitions 0/577 dead transitions. [2024-06-27 22:41:18,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 577 transitions, 10516 flow [2024-06-27 22:41:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:18,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:18,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:41:18,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:41:18,707 INFO L175 Difference]: Start difference. First operand has 469 places, 562 transitions, 8440 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:41:18,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 577 transitions, 10516 flow [2024-06-27 22:41:20,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 577 transitions, 10160 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:41:20,954 INFO L231 Difference]: Finished difference. Result has 471 places, 564 transitions, 8589 flow [2024-06-27 22:41:20,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8084, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8589, PETRI_PLACES=471, PETRI_TRANSITIONS=564} [2024-06-27 22:41:20,955 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 430 predicate places. [2024-06-27 22:41:20,955 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 564 transitions, 8589 flow [2024-06-27 22:41:20,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 22:41:20,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:20,955 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 22:41:20,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 22:41:20,955 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:20,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:20,957 INFO L85 PathProgramCache]: Analyzing trace with hash 73234270, now seen corresponding path program 10 times [2024-06-27 22:41:20,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:20,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807637991] [2024-06-27 22:41:20,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:20,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:23,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:23,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807637991] [2024-06-27 22:41:23,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807637991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:23,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:23,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:23,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091091393] [2024-06-27 22:41:23,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:23,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:23,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:23,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:23,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:41:23,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 564 transitions, 8589 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:23,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:23,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:41:23,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:24,746 INFO L124 PetriNetUnfolderBase]: 1895/3755 cut-off events. [2024-06-27 22:41:24,746 INFO L125 PetriNetUnfolderBase]: For 332480/332495 co-relation queries the response was YES. [2024-06-27 22:41:24,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28721 conditions, 3755 events. 1895/3755 cut-off events. For 332480/332495 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 27738 event pairs, 418 based on Foata normal form. 10/3409 useless extension candidates. Maximal degree in co-relation 28497. Up to 2773 conditions per place. [2024-06-27 22:41:24,800 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 396 selfloop transitions, 170 changer transitions 0/585 dead transitions. [2024-06-27 22:41:24,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 585 transitions, 10287 flow [2024-06-27 22:41:24,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 22:41:24,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162162162162162 [2024-06-27 22:41:24,801 INFO L175 Difference]: Start difference. First operand has 471 places, 564 transitions, 8589 flow. Second operand 10 states and 191 transitions. [2024-06-27 22:41:24,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 585 transitions, 10287 flow [2024-06-27 22:41:27,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 585 transitions, 9801 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 22:41:27,476 INFO L231 Difference]: Finished difference. Result has 473 places, 566 transitions, 8521 flow [2024-06-27 22:41:27,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8103, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8521, PETRI_PLACES=473, PETRI_TRANSITIONS=566} [2024-06-27 22:41:27,477 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-27 22:41:27,477 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 566 transitions, 8521 flow [2024-06-27 22:41:27,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:27,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:27,477 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 22:41:27,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 22:41:27,477 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:27,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:27,477 INFO L85 PathProgramCache]: Analyzing trace with hash 72927060, now seen corresponding path program 12 times [2024-06-27 22:41:27,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:27,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586317505] [2024-06-27 22:41:27,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:27,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:30,145 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 22:41:30,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:30,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586317505] [2024-06-27 22:41:30,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586317505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:30,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:30,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:30,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566138145] [2024-06-27 22:41:30,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:30,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:30,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:30,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:30,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:30,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:41:30,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 566 transitions, 8521 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 22:41:30,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:30,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:41:30,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:31,694 INFO L124 PetriNetUnfolderBase]: 1893/3761 cut-off events. [2024-06-27 22:41:31,694 INFO L125 PetriNetUnfolderBase]: For 313635/313650 co-relation queries the response was YES. [2024-06-27 22:41:31,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28270 conditions, 3761 events. 1893/3761 cut-off events. For 313635/313650 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 27763 event pairs, 416 based on Foata normal form. 8/3408 useless extension candidates. Maximal degree in co-relation 28044. Up to 2606 conditions per place. [2024-06-27 22:41:31,745 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 334 selfloop transitions, 227 changer transitions 0/579 dead transitions. [2024-06-27 22:41:31,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 579 transitions, 10571 flow [2024-06-27 22:41:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:31,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:41:31,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 22:41:31,746 INFO L175 Difference]: Start difference. First operand has 473 places, 566 transitions, 8521 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:41:31,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 579 transitions, 10571 flow [2024-06-27 22:41:34,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 579 transitions, 10295 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 22:41:34,264 INFO L231 Difference]: Finished difference. Result has 478 places, 566 transitions, 8704 flow [2024-06-27 22:41:34,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8245, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8704, PETRI_PLACES=478, PETRI_TRANSITIONS=566} [2024-06-27 22:41:34,265 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 437 predicate places. [2024-06-27 22:41:34,265 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 566 transitions, 8704 flow [2024-06-27 22:41:34,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 22:41:34,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:34,265 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 22:41:34,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 22:41:34,265 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:34,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:34,265 INFO L85 PathProgramCache]: Analyzing trace with hash 73224040, now seen corresponding path program 11 times [2024-06-27 22:41:34,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:34,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773875118] [2024-06-27 22:41:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:34,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:36,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:36,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773875118] [2024-06-27 22:41:36,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773875118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:36,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:36,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:41:36,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272398527] [2024-06-27 22:41:36,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:36,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:41:36,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:36,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:41:36,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:41:37,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:41:37,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 566 transitions, 8704 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:37,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:37,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:41:37,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:38,396 INFO L124 PetriNetUnfolderBase]: 1890/3748 cut-off events. [2024-06-27 22:41:38,397 INFO L125 PetriNetUnfolderBase]: For 302648/302663 co-relation queries the response was YES. [2024-06-27 22:41:38,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28272 conditions, 3748 events. 1890/3748 cut-off events. For 302648/302663 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 27697 event pairs, 429 based on Foata normal form. 10/3399 useless extension candidates. Maximal degree in co-relation 28044. Up to 2837 conditions per place. [2024-06-27 22:41:38,454 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 394 selfloop transitions, 169 changer transitions 0/581 dead transitions. [2024-06-27 22:41:38,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 581 transitions, 9940 flow [2024-06-27 22:41:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:41:38,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:41:38,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 22:41:38,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 22:41:38,456 INFO L175 Difference]: Start difference. First operand has 478 places, 566 transitions, 8704 flow. Second operand 11 states and 191 transitions. [2024-06-27 22:41:38,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 581 transitions, 9940 flow [2024-06-27 22:41:40,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 581 transitions, 9459 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 22:41:40,566 INFO L231 Difference]: Finished difference. Result has 480 places, 566 transitions, 8567 flow [2024-06-27 22:41:40,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8223, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8567, PETRI_PLACES=480, PETRI_TRANSITIONS=566} [2024-06-27 22:41:40,567 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 439 predicate places. [2024-06-27 22:41:40,567 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 566 transitions, 8567 flow [2024-06-27 22:41:40,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:40,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:40,567 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 22:41:40,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 22:41:40,568 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:40,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:40,568 INFO L85 PathProgramCache]: Analyzing trace with hash 970166144, now seen corresponding path program 12 times [2024-06-27 22:41:40,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:40,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931884705] [2024-06-27 22:41:40,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:40,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:42,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:42,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931884705] [2024-06-27 22:41:42,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931884705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:42,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:42,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:41:42,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328215845] [2024-06-27 22:41:42,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:42,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:41:42,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:42,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:41:42,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:41:42,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:41:42,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 566 transitions, 8567 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:42,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:42,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:41:42,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:44,155 INFO L124 PetriNetUnfolderBase]: 1920/3822 cut-off events. [2024-06-27 22:41:44,155 INFO L125 PetriNetUnfolderBase]: For 331108/331123 co-relation queries the response was YES. [2024-06-27 22:41:44,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28948 conditions, 3822 events. 1920/3822 cut-off events. For 331108/331123 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 28393 event pairs, 443 based on Foata normal form. 8/3469 useless extension candidates. Maximal degree in co-relation 28719. Up to 3046 conditions per place. [2024-06-27 22:41:44,212 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 468 selfloop transitions, 101 changer transitions 0/587 dead transitions. [2024-06-27 22:41:44,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 587 transitions, 10281 flow [2024-06-27 22:41:44,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:44,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:44,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:41:44,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-27 22:41:44,213 INFO L175 Difference]: Start difference. First operand has 480 places, 566 transitions, 8567 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:41:44,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 587 transitions, 10281 flow [2024-06-27 22:41:46,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 587 transitions, 9926 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 22:41:46,920 INFO L231 Difference]: Finished difference. Result has 479 places, 568 transitions, 8496 flow [2024-06-27 22:41:46,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8212, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8496, PETRI_PLACES=479, PETRI_TRANSITIONS=568} [2024-06-27 22:41:46,921 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-27 22:41:46,921 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 568 transitions, 8496 flow [2024-06-27 22:41:46,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:46,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:46,921 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 22:41:46,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 22:41:46,921 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:46,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:46,922 INFO L85 PathProgramCache]: Analyzing trace with hash 64652850, now seen corresponding path program 13 times [2024-06-27 22:41:46,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:46,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310883157] [2024-06-27 22:41:46,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:46,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:49,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:49,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310883157] [2024-06-27 22:41:49,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310883157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:49,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:49,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:41:49,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45906425] [2024-06-27 22:41:49,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:49,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:41:49,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:49,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:41:49,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:41:49,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:41:49,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 568 transitions, 8496 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:49,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:49,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:41:49,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:51,552 INFO L124 PetriNetUnfolderBase]: 1919/3820 cut-off events. [2024-06-27 22:41:51,552 INFO L125 PetriNetUnfolderBase]: For 312724/312739 co-relation queries the response was YES. [2024-06-27 22:41:51,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28620 conditions, 3820 events. 1919/3820 cut-off events. For 312724/312739 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 28384 event pairs, 436 based on Foata normal form. 8/3463 useless extension candidates. Maximal degree in co-relation 28390. Up to 2656 conditions per place. [2024-06-27 22:41:51,609 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 324 selfloop transitions, 238 changer transitions 0/580 dead transitions. [2024-06-27 22:41:51,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 580 transitions, 10258 flow [2024-06-27 22:41:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:41:51,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:41:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 22:41:51,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 22:41:51,610 INFO L175 Difference]: Start difference. First operand has 479 places, 568 transitions, 8496 flow. Second operand 11 states and 191 transitions. [2024-06-27 22:41:51,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 580 transitions, 10258 flow [2024-06-27 22:41:54,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 580 transitions, 10073 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 22:41:54,225 INFO L231 Difference]: Finished difference. Result has 484 places, 568 transitions, 8792 flow [2024-06-27 22:41:54,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8311, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8792, PETRI_PLACES=484, PETRI_TRANSITIONS=568} [2024-06-27 22:41:54,226 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-27 22:41:54,226 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 568 transitions, 8792 flow [2024-06-27 22:41:54,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:54,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:54,227 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 22:41:54,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 22:41:54,227 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:54,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:54,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1207677278, now seen corresponding path program 13 times [2024-06-27 22:41:54,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:54,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406507918] [2024-06-27 22:41:54,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:54,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:56,863 INFO 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 22:41:56,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:56,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406507918] [2024-06-27 22:41:56,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406507918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:56,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:56,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:41:56,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352821162] [2024-06-27 22:41:56,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:56,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:41:56,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:56,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:41:56,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:41:57,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:41:57,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 568 transitions, 8792 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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 22:41:57,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:57,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:41:57,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:58,893 INFO L124 PetriNetUnfolderBase]: 2224/4318 cut-off events. [2024-06-27 22:41:58,893 INFO L125 PetriNetUnfolderBase]: For 334737/334737 co-relation queries the response was YES. [2024-06-27 22:41:58,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32812 conditions, 4318 events. 2224/4318 cut-off events. For 334737/334737 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 31686 event pairs, 542 based on Foata normal form. 2/4031 useless extension candidates. Maximal degree in co-relation 32581. Up to 3728 conditions per place. [2024-06-27 22:41:58,957 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 562 selfloop transitions, 21 changer transitions 0/592 dead transitions. [2024-06-27 22:41:58,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 592 transitions, 10206 flow [2024-06-27 22:41:58,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:41:58,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:41:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 22:41:58,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-27 22:41:58,958 INFO L175 Difference]: Start difference. First operand has 484 places, 568 transitions, 8792 flow. Second operand 11 states and 173 transitions. [2024-06-27 22:41:58,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 592 transitions, 10206 flow [2024-06-27 22:42:01,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 592 transitions, 9681 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 22:42:01,993 INFO L231 Difference]: Finished difference. Result has 485 places, 571 transitions, 8392 flow [2024-06-27 22:42:01,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8273, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8392, PETRI_PLACES=485, PETRI_TRANSITIONS=571} [2024-06-27 22:42:01,993 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 444 predicate places. [2024-06-27 22:42:01,994 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 571 transitions, 8392 flow [2024-06-27 22:42:01,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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 22:42:01,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:01,994 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 22:42:01,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 22:42:01,994 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:01,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:01,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1562238848, now seen corresponding path program 14 times [2024-06-27 22:42:01,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:01,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972710252] [2024-06-27 22:42:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:01,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:04,691 INFO 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 22:42:04,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:04,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972710252] [2024-06-27 22:42:04,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972710252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:04,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:04,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:42:04,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486040796] [2024-06-27 22:42:04,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:04,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:42:04,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:04,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:42:04,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:42:04,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:42:04,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 571 transitions, 8392 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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 22:42:04,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:04,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:42:04,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:06,821 INFO L124 PetriNetUnfolderBase]: 2241/4366 cut-off events. [2024-06-27 22:42:06,822 INFO L125 PetriNetUnfolderBase]: For 341464/341464 co-relation queries the response was YES. [2024-06-27 22:42:06,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32564 conditions, 4366 events. 2241/4366 cut-off events. For 341464/341464 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 32090 event pairs, 513 based on Foata normal form. 2/4089 useless extension candidates. Maximal degree in co-relation 32331. Up to 3559 conditions per place. [2024-06-27 22:42:06,889 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 567 selfloop transitions, 30 changer transitions 0/606 dead transitions. [2024-06-27 22:42:06,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 606 transitions, 10314 flow [2024-06-27 22:42:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:42:06,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:42:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 211 transitions. [2024-06-27 22:42:06,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4386694386694387 [2024-06-27 22:42:06,891 INFO L175 Difference]: Start difference. First operand has 485 places, 571 transitions, 8392 flow. Second operand 13 states and 211 transitions. [2024-06-27 22:42:06,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 606 transitions, 10314 flow [2024-06-27 22:42:09,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 606 transitions, 10224 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 22:42:09,641 INFO L231 Difference]: Finished difference. Result has 489 places, 572 transitions, 8408 flow [2024-06-27 22:42:09,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8302, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8408, PETRI_PLACES=489, PETRI_TRANSITIONS=572} [2024-06-27 22:42:09,642 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 448 predicate places. [2024-06-27 22:42:09,642 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 572 transitions, 8408 flow [2024-06-27 22:42:09,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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 22:42:09,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:09,642 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 22:42:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 22:42:09,642 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:09,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash 970155914, now seen corresponding path program 15 times [2024-06-27 22:42:09,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:09,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308449807] [2024-06-27 22:42:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:09,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:11,751 INFO 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 22:42:11,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:11,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308449807] [2024-06-27 22:42:11,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308449807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:11,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:11,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:42:11,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007803213] [2024-06-27 22:42:11,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:11,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:42:11,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:11,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:42:11,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:42:11,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:42:11,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 572 transitions, 8408 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:11,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:11,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:42:11,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:13,248 INFO L124 PetriNetUnfolderBase]: 1969/3942 cut-off events. [2024-06-27 22:42:13,248 INFO L125 PetriNetUnfolderBase]: For 339548/339563 co-relation queries the response was YES. [2024-06-27 22:42:13,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29421 conditions, 3942 events. 1969/3942 cut-off events. For 339548/339563 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 29581 event pairs, 458 based on Foata normal form. 8/3573 useless extension candidates. Maximal degree in co-relation 29187. Up to 3198 conditions per place. [2024-06-27 22:42:13,308 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 470 selfloop transitions, 101 changer transitions 0/589 dead transitions. [2024-06-27 22:42:13,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 589 transitions, 9709 flow [2024-06-27 22:42:13,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:13,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:42:13,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:42:13,309 INFO L175 Difference]: Start difference. First operand has 489 places, 572 transitions, 8408 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:42:13,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 589 transitions, 9709 flow [2024-06-27 22:42:16,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 589 transitions, 9378 flow, removed 22 selfloop flow, removed 13 redundant places. [2024-06-27 22:42:16,096 INFO L231 Difference]: Finished difference. Result has 486 places, 575 transitions, 8336 flow [2024-06-27 22:42:16,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8079, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8336, PETRI_PLACES=486, PETRI_TRANSITIONS=575} [2024-06-27 22:42:16,096 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 445 predicate places. [2024-06-27 22:42:16,096 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 575 transitions, 8336 flow [2024-06-27 22:42:16,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:16,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:16,097 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 22:42:16,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 22:42:16,097 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:16,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:16,097 INFO L85 PathProgramCache]: Analyzing trace with hash 969867614, now seen corresponding path program 16 times [2024-06-27 22:42:16,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:16,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60135129] [2024-06-27 22:42:16,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:16,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:18,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:18,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60135129] [2024-06-27 22:42:18,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60135129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:18,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:18,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:42:18,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187078719] [2024-06-27 22:42:18,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:18,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:42:18,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:18,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:42:18,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:42:18,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:42:18,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 575 transitions, 8336 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:18,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:18,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:42:18,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:19,998 INFO L124 PetriNetUnfolderBase]: 1983/3970 cut-off events. [2024-06-27 22:42:19,998 INFO L125 PetriNetUnfolderBase]: For 342132/342147 co-relation queries the response was YES. [2024-06-27 22:42:20,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28922 conditions, 3970 events. 1983/3970 cut-off events. For 342132/342147 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 29831 event pairs, 466 based on Foata normal form. 8/3600 useless extension candidates. Maximal degree in co-relation 28692. Up to 3236 conditions per place. [2024-06-27 22:42:20,059 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 478 selfloop transitions, 94 changer transitions 0/590 dead transitions. [2024-06-27 22:42:20,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 590 transitions, 9621 flow [2024-06-27 22:42:20,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:20,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:20,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:42:20,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:42:20,060 INFO L175 Difference]: Start difference. First operand has 486 places, 575 transitions, 8336 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:42:20,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 590 transitions, 9621 flow [2024-06-27 22:42:22,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 590 transitions, 9403 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 22:42:22,836 INFO L231 Difference]: Finished difference. Result has 489 places, 576 transitions, 8345 flow [2024-06-27 22:42:22,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8118, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8345, PETRI_PLACES=489, PETRI_TRANSITIONS=576} [2024-06-27 22:42:22,836 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 448 predicate places. [2024-06-27 22:42:22,836 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 576 transitions, 8345 flow [2024-06-27 22:42:22,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:22,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:22,837 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 22:42:22,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 22:42:22,837 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:22,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:22,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1402827952, now seen corresponding path program 14 times [2024-06-27 22:42:22,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:22,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682579310] [2024-06-27 22:42:22,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:22,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:25,072 INFO 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 22:42:25,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:25,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682579310] [2024-06-27 22:42:25,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682579310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:25,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:25,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:42:25,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30984817] [2024-06-27 22:42:25,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:25,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:42:25,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:25,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:42:25,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:42:25,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:42:25,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 576 transitions, 8345 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:25,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:25,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:42:25,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:26,698 INFO L124 PetriNetUnfolderBase]: 1981/3975 cut-off events. [2024-06-27 22:42:26,698 INFO L125 PetriNetUnfolderBase]: For 320394/320409 co-relation queries the response was YES. [2024-06-27 22:42:26,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28659 conditions, 3975 events. 1981/3975 cut-off events. For 320394/320409 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 29945 event pairs, 460 based on Foata normal form. 7/3601 useless extension candidates. Maximal degree in co-relation 28428. Up to 3243 conditions per place. [2024-06-27 22:42:26,756 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 471 selfloop transitions, 97 changer transitions 0/586 dead transitions. [2024-06-27 22:42:26,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 586 transitions, 9503 flow [2024-06-27 22:42:26,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:42:26,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:42:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 22:42:26,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 22:42:26,757 INFO L175 Difference]: Start difference. First operand has 489 places, 576 transitions, 8345 flow. Second operand 11 states and 177 transitions. [2024-06-27 22:42:26,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 586 transitions, 9503 flow [2024-06-27 22:42:29,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 586 transitions, 9268 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 22:42:29,500 INFO L231 Difference]: Finished difference. Result has 492 places, 576 transitions, 8309 flow [2024-06-27 22:42:29,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8110, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8309, PETRI_PLACES=492, PETRI_TRANSITIONS=576} [2024-06-27 22:42:29,501 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 451 predicate places. [2024-06-27 22:42:29,501 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 576 transitions, 8309 flow [2024-06-27 22:42:29,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:29,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:29,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:29,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 22:42:29,501 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:29,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:29,502 INFO L85 PathProgramCache]: Analyzing trace with hash 740179004, now seen corresponding path program 17 times [2024-06-27 22:42:29,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:29,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014778390] [2024-06-27 22:42:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:29,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:31,692 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 22:42:31,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:31,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014778390] [2024-06-27 22:42:31,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014778390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:31,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:31,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:42:31,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9536713] [2024-06-27 22:42:31,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:31,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:42:31,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:31,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:42:31,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:42:31,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:42:31,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 576 transitions, 8309 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:31,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:31,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:42:31,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:33,262 INFO L124 PetriNetUnfolderBase]: 2022/4088 cut-off events. [2024-06-27 22:42:33,262 INFO L125 PetriNetUnfolderBase]: For 414124/414142 co-relation queries the response was YES. [2024-06-27 22:42:33,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28928 conditions, 4088 events. 2022/4088 cut-off events. For 414124/414142 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 31042 event pairs, 495 based on Foata normal form. 16/3715 useless extension candidates. Maximal degree in co-relation 28695. Up to 3206 conditions per place. [2024-06-27 22:42:33,325 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 472 selfloop transitions, 103 changer transitions 0/593 dead transitions. [2024-06-27 22:42:33,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 593 transitions, 9613 flow [2024-06-27 22:42:33,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:42:33,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:42:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:42:33,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:42:33,326 INFO L175 Difference]: Start difference. First operand has 492 places, 576 transitions, 8309 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:42:33,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 593 transitions, 9613 flow [2024-06-27 22:42:36,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 593 transitions, 9367 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-27 22:42:36,014 INFO L231 Difference]: Finished difference. Result has 492 places, 576 transitions, 8275 flow [2024-06-27 22:42:36,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8063, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8275, PETRI_PLACES=492, PETRI_TRANSITIONS=576} [2024-06-27 22:42:36,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 451 predicate places. [2024-06-27 22:42:36,015 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 576 transitions, 8275 flow [2024-06-27 22:42:36,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:36,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:36,015 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 22:42:36,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 22:42:36,016 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:36,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:36,017 INFO L85 PathProgramCache]: Analyzing trace with hash 740170324, now seen corresponding path program 15 times [2024-06-27 22:42:36,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:36,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895843978] [2024-06-27 22:42:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:36,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:38,884 INFO 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 22:42:38,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:38,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895843978] [2024-06-27 22:42:38,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895843978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:38,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:38,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:42:38,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050175173] [2024-06-27 22:42:38,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:38,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:42:38,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:38,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:42:38,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:42:39,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:42:39,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 576 transitions, 8275 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:39,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:39,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:42:39,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:40,605 INFO L124 PetriNetUnfolderBase]: 2027/4086 cut-off events. [2024-06-27 22:42:40,605 INFO L125 PetriNetUnfolderBase]: For 304820/304838 co-relation queries the response was YES. [2024-06-27 22:42:40,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28909 conditions, 4086 events. 2027/4086 cut-off events. For 304820/304838 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 31011 event pairs, 490 based on Foata normal form. 7/3704 useless extension candidates. Maximal degree in co-relation 28675. Up to 3322 conditions per place. [2024-06-27 22:42:40,665 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 465 selfloop transitions, 105 changer transitions 0/588 dead transitions. [2024-06-27 22:42:40,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 588 transitions, 9479 flow [2024-06-27 22:42:40,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:42:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:42:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:42:40,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 22:42:40,666 INFO L175 Difference]: Start difference. First operand has 492 places, 576 transitions, 8275 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:42:40,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 588 transitions, 9479 flow [2024-06-27 22:42:43,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 588 transitions, 9257 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:42:43,253 INFO L231 Difference]: Finished difference. Result has 495 places, 578 transitions, 8314 flow [2024-06-27 22:42:43,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8053, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8314, PETRI_PLACES=495, PETRI_TRANSITIONS=578} [2024-06-27 22:42:43,254 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 454 predicate places. [2024-06-27 22:42:43,254 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 578 transitions, 8314 flow [2024-06-27 22:42:43,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:43,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:43,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:43,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 22:42:43,254 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:43,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:43,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1550274398, now seen corresponding path program 18 times [2024-06-27 22:42:43,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:43,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111982872] [2024-06-27 22:42:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:43,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:45,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:45,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111982872] [2024-06-27 22:42:45,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111982872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:45,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:45,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:42:45,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755386532] [2024-06-27 22:42:45,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:45,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:42:45,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:42:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:42:46,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:42:46,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 578 transitions, 8314 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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 22:42:46,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:46,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:42:46,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:47,960 INFO L124 PetriNetUnfolderBase]: 2380/4659 cut-off events. [2024-06-27 22:42:47,960 INFO L125 PetriNetUnfolderBase]: For 357662/357662 co-relation queries the response was YES. [2024-06-27 22:42:48,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33472 conditions, 4659 events. 2380/4659 cut-off events. For 357662/357662 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 34943 event pairs, 590 based on Foata normal form. 2/4352 useless extension candidates. Maximal degree in co-relation 33238. Up to 3938 conditions per place. [2024-06-27 22:42:48,025 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 571 selfloop transitions, 30 changer transitions 0/610 dead transitions. [2024-06-27 22:42:48,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 610 transitions, 10211 flow [2024-06-27 22:42:48,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:42:48,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:42:48,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-27 22:42:48,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 22:42:48,026 INFO L175 Difference]: Start difference. First operand has 495 places, 578 transitions, 8314 flow. Second operand 12 states and 196 transitions. [2024-06-27 22:42:48,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 610 transitions, 10211 flow [2024-06-27 22:42:50,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 610 transitions, 9951 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 22:42:50,849 INFO L231 Difference]: Finished difference. Result has 497 places, 582 transitions, 8215 flow [2024-06-27 22:42:50,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8054, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8215, PETRI_PLACES=497, PETRI_TRANSITIONS=582} [2024-06-27 22:42:50,850 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-27 22:42:50,850 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 582 transitions, 8215 flow [2024-06-27 22:42:50,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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 22:42:50,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:50,851 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 22:42:50,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 22:42:50,851 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:50,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1217796608, now seen corresponding path program 19 times [2024-06-27 22:42:50,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:50,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043457606] [2024-06-27 22:42:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:50,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:53,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:53,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043457606] [2024-06-27 22:42:53,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043457606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:53,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:53,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:42:53,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769337633] [2024-06-27 22:42:53,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:53,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:42:53,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:53,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:42:53,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:42:54,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:42:54,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 582 transitions, 8215 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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 22:42:54,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:54,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:42:54,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:55,874 INFO L124 PetriNetUnfolderBase]: 2377/4656 cut-off events. [2024-06-27 22:42:55,874 INFO L125 PetriNetUnfolderBase]: For 333963/333963 co-relation queries the response was YES. [2024-06-27 22:42:55,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32938 conditions, 4656 events. 2377/4656 cut-off events. For 333963/333963 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 34933 event pairs, 602 based on Foata normal form. 2/4348 useless extension candidates. Maximal degree in co-relation 32703. Up to 3988 conditions per place. [2024-06-27 22:42:55,950 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 567 selfloop transitions, 29 changer transitions 0/605 dead transitions. [2024-06-27 22:42:55,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 605 transitions, 9597 flow [2024-06-27 22:42:55,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:42:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:42:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-27 22:42:55,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2024-06-27 22:42:55,951 INFO L175 Difference]: Start difference. First operand has 497 places, 582 transitions, 8215 flow. Second operand 12 states and 190 transitions. [2024-06-27 22:42:55,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 605 transitions, 9597 flow [2024-06-27 22:42:58,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 605 transitions, 9525 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 22:42:58,788 INFO L231 Difference]: Finished difference. Result has 503 places, 582 transitions, 8205 flow [2024-06-27 22:42:58,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8143, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8205, PETRI_PLACES=503, PETRI_TRANSITIONS=582} [2024-06-27 22:42:58,788 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 462 predicate places. [2024-06-27 22:42:58,788 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 582 transitions, 8205 flow [2024-06-27 22:42:58,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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 22:42:58,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:58,789 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 22:42:58,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 22:42:58,789 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:58,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:58,789 INFO L85 PathProgramCache]: Analyzing trace with hash 739939684, now seen corresponding path program 16 times [2024-06-27 22:42:58,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:58,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747920477] [2024-06-27 22:42:58,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:58,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:01,408 INFO 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 22:43:01,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:01,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747920477] [2024-06-27 22:43:01,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747920477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:01,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:01,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:43:01,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47476031] [2024-06-27 22:43:01,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:01,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:43:01,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:01,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:43:01,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:43:01,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:43:01,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 582 transitions, 8205 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:01,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:01,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:43:01,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:03,429 INFO L124 PetriNetUnfolderBase]: 2057/4158 cut-off events. [2024-06-27 22:43:03,429 INFO L125 PetriNetUnfolderBase]: For 301944/301962 co-relation queries the response was YES. [2024-06-27 22:43:03,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29049 conditions, 4158 events. 2057/4158 cut-off events. For 301944/301962 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 31750 event pairs, 505 based on Foata normal form. 7/3769 useless extension candidates. Maximal degree in co-relation 28812. Up to 3365 conditions per place. [2024-06-27 22:43:03,485 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 465 selfloop transitions, 109 changer transitions 0/592 dead transitions. [2024-06-27 22:43:03,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 592 transitions, 9375 flow [2024-06-27 22:43:03,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:03,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:03,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:43:03,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:43:03,486 INFO L175 Difference]: Start difference. First operand has 503 places, 582 transitions, 8205 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:43:03,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 592 transitions, 9375 flow [2024-06-27 22:43:05,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 592 transitions, 9290 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-27 22:43:05,867 INFO L231 Difference]: Finished difference. Result has 502 places, 582 transitions, 8343 flow [2024-06-27 22:43:05,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8120, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8343, PETRI_PLACES=502, PETRI_TRANSITIONS=582} [2024-06-27 22:43:05,868 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 461 predicate places. [2024-06-27 22:43:05,868 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 582 transitions, 8343 flow [2024-06-27 22:43:05,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:05,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:05,868 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 22:43:05,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 22:43:05,868 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:05,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:05,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1207975808, now seen corresponding path program 20 times [2024-06-27 22:43:05,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:05,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430776342] [2024-06-27 22:43:05,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:05,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:08,750 INFO 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 22:43:08,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:08,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430776342] [2024-06-27 22:43:08,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430776342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:08,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:08,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:43:08,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569387040] [2024-06-27 22:43:08,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:08,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:43:08,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:08,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:43:08,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:43:08,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:43:08,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 582 transitions, 8343 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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 22:43:08,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:08,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:43:08,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:11,073 INFO L124 PetriNetUnfolderBase]: 2392/4693 cut-off events. [2024-06-27 22:43:11,073 INFO L125 PetriNetUnfolderBase]: For 325813/325813 co-relation queries the response was YES. [2024-06-27 22:43:11,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33094 conditions, 4693 events. 2392/4693 cut-off events. For 325813/325813 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 35193 event pairs, 598 based on Foata normal form. 2/4384 useless extension candidates. Maximal degree in co-relation 32857. Up to 3938 conditions per place. [2024-06-27 22:43:11,132 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 567 selfloop transitions, 33 changer transitions 0/609 dead transitions. [2024-06-27 22:43:11,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 609 transitions, 10172 flow [2024-06-27 22:43:11,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:43:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:43:11,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:43:11,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 22:43:11,133 INFO L175 Difference]: Start difference. First operand has 502 places, 582 transitions, 8343 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:43:11,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 609 transitions, 10172 flow [2024-06-27 22:43:13,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 609 transitions, 9918 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 22:43:13,930 INFO L231 Difference]: Finished difference. Result has 503 places, 583 transitions, 8194 flow [2024-06-27 22:43:13,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8089, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8194, PETRI_PLACES=503, PETRI_TRANSITIONS=583} [2024-06-27 22:43:13,930 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 462 predicate places. [2024-06-27 22:43:13,930 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 583 transitions, 8194 flow [2024-06-27 22:43:13,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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 22:43:13,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:13,930 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 22:43:13,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 22:43:13,931 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:13,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:13,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1207668598, now seen corresponding path program 17 times [2024-06-27 22:43:13,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:13,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639216352] [2024-06-27 22:43:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:13,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:16,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:16,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639216352] [2024-06-27 22:43:16,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639216352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:16,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:16,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:43:16,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433623759] [2024-06-27 22:43:16,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:16,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:43:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:16,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:43:16,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:43:16,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:43:16,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 583 transitions, 8194 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:16,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:16,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:43:16,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:18,945 INFO L124 PetriNetUnfolderBase]: 2390/4706 cut-off events. [2024-06-27 22:43:18,945 INFO L125 PetriNetUnfolderBase]: For 301647/301647 co-relation queries the response was YES. [2024-06-27 22:43:19,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32756 conditions, 4706 events. 2390/4706 cut-off events. For 301647/301647 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 35402 event pairs, 605 based on Foata normal form. 1/4389 useless extension candidates. Maximal degree in co-relation 32517. Up to 4010 conditions per place. [2024-06-27 22:43:19,018 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 553 selfloop transitions, 38 changer transitions 0/600 dead transitions. [2024-06-27 22:43:19,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 600 transitions, 9468 flow [2024-06-27 22:43:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:43:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:43:19,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 188 transitions. [2024-06-27 22:43:19,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-27 22:43:19,019 INFO L175 Difference]: Start difference. First operand has 503 places, 583 transitions, 8194 flow. Second operand 12 states and 188 transitions. [2024-06-27 22:43:19,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 600 transitions, 9468 flow [2024-06-27 22:43:22,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 600 transitions, 9332 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-27 22:43:22,056 INFO L231 Difference]: Finished difference. Result has 505 places, 583 transitions, 8139 flow [2024-06-27 22:43:22,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8058, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8139, PETRI_PLACES=505, PETRI_TRANSITIONS=583} [2024-06-27 22:43:22,056 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 464 predicate places. [2024-06-27 22:43:22,056 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 583 transitions, 8139 flow [2024-06-27 22:43:22,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:22,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:22,057 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 22:43:22,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 22:43:22,057 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:22,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:22,058 INFO L85 PathProgramCache]: Analyzing trace with hash -411891612, now seen corresponding path program 21 times [2024-06-27 22:43:22,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:22,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145467330] [2024-06-27 22:43:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:22,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:25,352 INFO 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 22:43:25,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:25,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145467330] [2024-06-27 22:43:25,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145467330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:25,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:25,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:43:25,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437824477] [2024-06-27 22:43:25,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:25,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:43:25,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:25,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:43:25,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:43:25,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:43:25,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 583 transitions, 8139 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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 22:43:25,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:25,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:43:25,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:27,436 INFO L124 PetriNetUnfolderBase]: 2387/4701 cut-off events. [2024-06-27 22:43:27,436 INFO L125 PetriNetUnfolderBase]: For 287777/287777 co-relation queries the response was YES. [2024-06-27 22:43:27,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32078 conditions, 4701 events. 2387/4701 cut-off events. For 287777/287777 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 35369 event pairs, 604 based on Foata normal form. 2/4386 useless extension candidates. Maximal degree in co-relation 31839. Up to 4021 conditions per place. [2024-06-27 22:43:27,502 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 568 selfloop transitions, 27 changer transitions 0/604 dead transitions. [2024-06-27 22:43:27,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 604 transitions, 9507 flow [2024-06-27 22:43:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:43:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:43:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 22:43:27,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 22:43:27,503 INFO L175 Difference]: Start difference. First operand has 505 places, 583 transitions, 8139 flow. Second operand 11 states and 177 transitions. [2024-06-27 22:43:27,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 604 transitions, 9507 flow [2024-06-27 22:43:30,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 604 transitions, 9403 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 22:43:30,194 INFO L231 Difference]: Finished difference. Result has 506 places, 583 transitions, 8093 flow [2024-06-27 22:43:30,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8035, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8093, PETRI_PLACES=506, PETRI_TRANSITIONS=583} [2024-06-27 22:43:30,194 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 465 predicate places. [2024-06-27 22:43:30,195 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 583 transitions, 8093 flow [2024-06-27 22:43:30,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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 22:43:30,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:30,195 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 22:43:30,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 22:43:30,195 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:30,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:30,196 INFO L85 PathProgramCache]: Analyzing trace with hash 965907472, now seen corresponding path program 16 times [2024-06-27 22:43:30,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:30,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580387512] [2024-06-27 22:43:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:30,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:31,673 INFO 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 22:43:31,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:31,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580387512] [2024-06-27 22:43:31,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580387512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:31,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:31,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:43:31,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138021543] [2024-06-27 22:43:31,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:31,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:43:31,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:31,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:43:31,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:43:31,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:43:31,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 583 transitions, 8093 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:31,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:31,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:43:31,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:33,496 INFO L124 PetriNetUnfolderBase]: 2407/4732 cut-off events. [2024-06-27 22:43:33,496 INFO L125 PetriNetUnfolderBase]: For 291060/291060 co-relation queries the response was YES. [2024-06-27 22:43:33,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32331 conditions, 4732 events. 2407/4732 cut-off events. For 291060/291060 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 35602 event pairs, 501 based on Foata normal form. 2/4415 useless extension candidates. Maximal degree in co-relation 32091. Up to 3916 conditions per place. [2024-06-27 22:43:33,564 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 539 selfloop transitions, 70 changer transitions 0/618 dead transitions. [2024-06-27 22:43:33,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 618 transitions, 9589 flow [2024-06-27 22:43:33,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:43:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:43:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:43:33,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:43:33,565 INFO L175 Difference]: Start difference. First operand has 506 places, 583 transitions, 8093 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:43:33,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 618 transitions, 9589 flow [2024-06-27 22:43:36,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 618 transitions, 9501 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 22:43:36,359 INFO L231 Difference]: Finished difference. Result has 505 places, 587 transitions, 8299 flow [2024-06-27 22:43:36,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8005, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8299, PETRI_PLACES=505, PETRI_TRANSITIONS=587} [2024-06-27 22:43:36,360 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 464 predicate places. [2024-06-27 22:43:36,360 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 587 transitions, 8299 flow [2024-06-27 22:43:36,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:36,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:36,360 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 22:43:36,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 22:43:36,360 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:36,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:36,360 INFO L85 PathProgramCache]: Analyzing trace with hash 733391024, now seen corresponding path program 17 times [2024-06-27 22:43:36,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:36,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529989511] [2024-06-27 22:43:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:36,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:37,907 INFO 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 22:43:37,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:37,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529989511] [2024-06-27 22:43:37,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529989511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:37,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:37,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:43:37,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889751619] [2024-06-27 22:43:37,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:37,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:43:37,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:37,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:43:37,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:43:38,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:43:38,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 587 transitions, 8299 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:38,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:38,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:43:38,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:39,546 INFO L124 PetriNetUnfolderBase]: 2427/4769 cut-off events. [2024-06-27 22:43:39,546 INFO L125 PetriNetUnfolderBase]: For 302146/302146 co-relation queries the response was YES. [2024-06-27 22:43:39,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33089 conditions, 4769 events. 2427/4769 cut-off events. For 302146/302146 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 35945 event pairs, 533 based on Foata normal form. 2/4455 useless extension candidates. Maximal degree in co-relation 32849. Up to 4002 conditions per place. [2024-06-27 22:43:39,619 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 541 selfloop transitions, 68 changer transitions 0/618 dead transitions. [2024-06-27 22:43:39,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 618 transitions, 9793 flow [2024-06-27 22:43:39,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:39,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:39,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:43:39,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:43:39,621 INFO L175 Difference]: Start difference. First operand has 505 places, 587 transitions, 8299 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:43:39,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 618 transitions, 9793 flow [2024-06-27 22:43:42,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 618 transitions, 9541 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-27 22:43:42,969 INFO L231 Difference]: Finished difference. Result has 506 places, 590 transitions, 8344 flow [2024-06-27 22:43:42,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8047, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8344, PETRI_PLACES=506, PETRI_TRANSITIONS=590} [2024-06-27 22:43:42,970 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 465 predicate places. [2024-06-27 22:43:42,970 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 590 transitions, 8344 flow [2024-06-27 22:43:42,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:42,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:42,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:42,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 22:43:42,971 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:42,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:42,971 INFO L85 PathProgramCache]: Analyzing trace with hash 747868334, now seen corresponding path program 18 times [2024-06-27 22:43:42,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:42,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071682303] [2024-06-27 22:43:42,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:42,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:44,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:44,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071682303] [2024-06-27 22:43:44,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071682303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:44,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:44,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:43:44,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017445585] [2024-06-27 22:43:44,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:44,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:43:44,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:44,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:43:44,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:43:44,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:43:44,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 590 transitions, 8344 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:44,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:44,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:43:44,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:46,771 INFO L124 PetriNetUnfolderBase]: 2461/4836 cut-off events. [2024-06-27 22:43:46,772 INFO L125 PetriNetUnfolderBase]: For 310228/310228 co-relation queries the response was YES. [2024-06-27 22:43:46,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33760 conditions, 4836 events. 2461/4836 cut-off events. For 310228/310228 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 36536 event pairs, 563 based on Foata normal form. 2/4513 useless extension candidates. Maximal degree in co-relation 33520. Up to 4101 conditions per place. [2024-06-27 22:43:46,831 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 552 selfloop transitions, 66 changer transitions 0/627 dead transitions. [2024-06-27 22:43:46,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 627 transitions, 9991 flow [2024-06-27 22:43:46,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:43:46,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:43:46,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:43:46,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:43:46,833 INFO L175 Difference]: Start difference. First operand has 506 places, 590 transitions, 8344 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:43:46,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 627 transitions, 9991 flow [2024-06-27 22:43:49,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 627 transitions, 9738 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-27 22:43:49,988 INFO L231 Difference]: Finished difference. Result has 511 places, 598 transitions, 8459 flow [2024-06-27 22:43:49,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8091, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8459, PETRI_PLACES=511, PETRI_TRANSITIONS=598} [2024-06-27 22:43:49,989 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 470 predicate places. [2024-06-27 22:43:49,989 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 598 transitions, 8459 flow [2024-06-27 22:43:49,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:49,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:49,989 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 22:43:49,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 22:43:49,989 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:49,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:49,989 INFO L85 PathProgramCache]: Analyzing trace with hash 332864974, now seen corresponding path program 19 times [2024-06-27 22:43:49,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:49,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387557996] [2024-06-27 22:43:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:49,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:51,459 INFO 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 22:43:51,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:51,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387557996] [2024-06-27 22:43:51,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387557996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:51,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:51,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:43:51,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356378945] [2024-06-27 22:43:51,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:51,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:43:51,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:51,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:43:51,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:43:51,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:43:51,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 598 transitions, 8459 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:51,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:51,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:43:51,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:53,292 INFO L124 PetriNetUnfolderBase]: 2301/4707 cut-off events. [2024-06-27 22:43:53,292 INFO L125 PetriNetUnfolderBase]: For 316184/316192 co-relation queries the response was YES. [2024-06-27 22:43:53,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31986 conditions, 4707 events. 2301/4707 cut-off events. For 316184/316192 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 36796 event pairs, 352 based on Foata normal form. 6/4413 useless extension candidates. Maximal degree in co-relation 31743. Up to 2891 conditions per place. [2024-06-27 22:43:53,366 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 351 selfloop transitions, 110 changer transitions 0/635 dead transitions. [2024-06-27 22:43:53,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 635 transitions, 9685 flow [2024-06-27 22:43:53,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:43:53,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:43:53,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 22:43:53,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987714987714988 [2024-06-27 22:43:53,367 INFO L175 Difference]: Start difference. First operand has 511 places, 598 transitions, 8459 flow. Second operand 11 states and 203 transitions. [2024-06-27 22:43:53,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 635 transitions, 9685 flow [2024-06-27 22:43:56,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 635 transitions, 9552 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 22:43:56,141 INFO L231 Difference]: Finished difference. Result has 514 places, 601 transitions, 8662 flow [2024-06-27 22:43:56,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8326, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8662, PETRI_PLACES=514, PETRI_TRANSITIONS=601} [2024-06-27 22:43:56,141 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 473 predicate places. [2024-06-27 22:43:56,141 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 601 transitions, 8662 flow [2024-06-27 22:43:56,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:56,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:56,141 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 22:43:56,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 22:43:56,142 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:56,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:56,142 INFO L85 PathProgramCache]: Analyzing trace with hash 662769046, now seen corresponding path program 20 times [2024-06-27 22:43:56,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:56,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291699840] [2024-06-27 22:43:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:56,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:57,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:57,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291699840] [2024-06-27 22:43:57,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291699840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:57,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:57,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:43:57,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343206564] [2024-06-27 22:43:57,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:57,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:43:57,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:57,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:43:57,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:43:57,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:43:57,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 601 transitions, 8662 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:57,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:57,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:43:57,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:59,420 INFO L124 PetriNetUnfolderBase]: 2528/4988 cut-off events. [2024-06-27 22:43:59,420 INFO L125 PetriNetUnfolderBase]: For 325732/325732 co-relation queries the response was YES. [2024-06-27 22:43:59,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35316 conditions, 4988 events. 2528/4988 cut-off events. For 325732/325732 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 38067 event pairs, 562 based on Foata normal form. 2/4656 useless extension candidates. Maximal degree in co-relation 35072. Up to 4091 conditions per place. [2024-06-27 22:43:59,499 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 557 selfloop transitions, 72 changer transitions 0/638 dead transitions. [2024-06-27 22:43:59,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 638 transitions, 10283 flow [2024-06-27 22:43:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:43:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:43:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:43:59,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:43:59,500 INFO L175 Difference]: Start difference. First operand has 514 places, 601 transitions, 8662 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:43:59,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 638 transitions, 10283 flow [2024-06-27 22:44:02,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 638 transitions, 10103 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:44:02,208 INFO L231 Difference]: Finished difference. Result has 517 places, 605 transitions, 8785 flow [2024-06-27 22:44:02,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8498, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8785, PETRI_PLACES=517, PETRI_TRANSITIONS=605} [2024-06-27 22:44:02,208 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 476 predicate places. [2024-06-27 22:44:02,208 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 605 transitions, 8785 flow [2024-06-27 22:44:02,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:02,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:02,209 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 22:44:02,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 22:44:02,209 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:02,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash -867314760, now seen corresponding path program 21 times [2024-06-27 22:44:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:02,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604975311] [2024-06-27 22:44:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:02,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:03,805 INFO 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 22:44:03,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:03,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604975311] [2024-06-27 22:44:03,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604975311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:03,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:03,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:44:03,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327966494] [2024-06-27 22:44:03,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:03,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:44:03,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:03,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:44:03,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:44:03,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:44:03,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 605 transitions, 8785 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:03,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:03,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:44:03,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:05,604 INFO L124 PetriNetUnfolderBase]: 2555/5040 cut-off events. [2024-06-27 22:44:05,604 INFO L125 PetriNetUnfolderBase]: For 334193/334193 co-relation queries the response was YES. [2024-06-27 22:44:05,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35885 conditions, 5040 events. 2555/5040 cut-off events. For 334193/334193 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 38566 event pairs, 606 based on Foata normal form. 2/4711 useless extension candidates. Maximal degree in co-relation 35640. Up to 4226 conditions per place. [2024-06-27 22:44:05,678 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 558 selfloop transitions, 69 changer transitions 0/636 dead transitions. [2024-06-27 22:44:05,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 636 transitions, 10329 flow [2024-06-27 22:44:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:44:05,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:44:05,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:44:05,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:44:05,680 INFO L175 Difference]: Start difference. First operand has 517 places, 605 transitions, 8785 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:44:05,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 636 transitions, 10329 flow [2024-06-27 22:44:08,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 636 transitions, 10170 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 22:44:08,538 INFO L231 Difference]: Finished difference. Result has 519 places, 610 transitions, 8957 flow [2024-06-27 22:44:08,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8626, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8957, PETRI_PLACES=519, PETRI_TRANSITIONS=610} [2024-06-27 22:44:08,539 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 478 predicate places. [2024-06-27 22:44:08,539 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 610 transitions, 8957 flow [2024-06-27 22:44:08,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:08,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:08,539 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 22:44:08,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 22:44:08,540 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:08,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:08,540 INFO L85 PathProgramCache]: Analyzing trace with hash -852837450, now seen corresponding path program 22 times [2024-06-27 22:44:08,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:08,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135751286] [2024-06-27 22:44:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:08,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:10,144 INFO 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 22:44:10,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:10,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135751286] [2024-06-27 22:44:10,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135751286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:10,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:10,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:10,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47421291] [2024-06-27 22:44:10,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:10,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:10,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:10,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:10,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:10,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:44:10,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 610 transitions, 8957 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:10,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:10,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:44:10,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:11,969 INFO L124 PetriNetUnfolderBase]: 2592/5126 cut-off events. [2024-06-27 22:44:11,969 INFO L125 PetriNetUnfolderBase]: For 350676/350676 co-relation queries the response was YES. [2024-06-27 22:44:12,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36963 conditions, 5126 events. 2592/5126 cut-off events. For 350676/350676 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 39513 event pairs, 636 based on Foata normal form. 2/4787 useless extension candidates. Maximal degree in co-relation 36717. Up to 4326 conditions per place. [2024-06-27 22:44:12,052 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 568 selfloop transitions, 67 changer transitions 0/644 dead transitions. [2024-06-27 22:44:12,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 644 transitions, 10638 flow [2024-06-27 22:44:12,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:44:12,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:44:12,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:44:12,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:44:12,057 INFO L175 Difference]: Start difference. First operand has 519 places, 610 transitions, 8957 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:44:12,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 644 transitions, 10638 flow [2024-06-27 22:44:15,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 644 transitions, 10381 flow, removed 70 selfloop flow, removed 8 redundant places. [2024-06-27 22:44:15,129 INFO L231 Difference]: Finished difference. Result has 523 places, 617 transitions, 9082 flow [2024-06-27 22:44:15,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8700, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9082, PETRI_PLACES=523, PETRI_TRANSITIONS=617} [2024-06-27 22:44:15,130 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 482 predicate places. [2024-06-27 22:44:15,130 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 617 transitions, 9082 flow [2024-06-27 22:44:15,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:15,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:15,130 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 22:44:15,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 22:44:15,131 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:15,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:15,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1125692486, now seen corresponding path program 23 times [2024-06-27 22:44:15,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:15,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118286985] [2024-06-27 22:44:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:15,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:16,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:16,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118286985] [2024-06-27 22:44:16,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118286985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:16,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:16,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:16,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042120499] [2024-06-27 22:44:16,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:16,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:16,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:16,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:16,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:17,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:44:17,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 617 transitions, 9082 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:17,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:17,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:44:17,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:19,077 INFO L124 PetriNetUnfolderBase]: 2612/5161 cut-off events. [2024-06-27 22:44:19,077 INFO L125 PetriNetUnfolderBase]: For 354337/354337 co-relation queries the response was YES. [2024-06-27 22:44:19,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37133 conditions, 5161 events. 2612/5161 cut-off events. For 354337/354337 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 39726 event pairs, 624 based on Foata normal form. 2/4818 useless extension candidates. Maximal degree in co-relation 36885. Up to 4334 conditions per place. [2024-06-27 22:44:19,151 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 532 selfloop transitions, 104 changer transitions 0/645 dead transitions. [2024-06-27 22:44:19,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 645 transitions, 10626 flow [2024-06-27 22:44:19,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:44:19,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:44:19,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:44:19,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:44:19,153 INFO L175 Difference]: Start difference. First operand has 523 places, 617 transitions, 9082 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:44:19,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 645 transitions, 10626 flow [2024-06-27 22:44:21,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 645 transitions, 10493 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 22:44:21,994 INFO L231 Difference]: Finished difference. Result has 526 places, 621 transitions, 9330 flow [2024-06-27 22:44:21,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8949, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9330, PETRI_PLACES=526, PETRI_TRANSITIONS=621} [2024-06-27 22:44:21,995 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 485 predicate places. [2024-06-27 22:44:21,995 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 621 transitions, 9330 flow [2024-06-27 22:44:21,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:21,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:21,995 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 22:44:21,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 22:44:21,996 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:21,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:21,996 INFO L85 PathProgramCache]: Analyzing trace with hash -873362096, now seen corresponding path program 24 times [2024-06-27 22:44:21,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:21,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329208360] [2024-06-27 22:44:21,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:21,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:23,717 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 22:44:23,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:23,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329208360] [2024-06-27 22:44:23,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329208360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:23,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:23,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:23,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543079047] [2024-06-27 22:44:23,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:23,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:23,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:23,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:44:23,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 621 transitions, 9330 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:23,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:23,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:44:23,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:25,550 INFO L124 PetriNetUnfolderBase]: 2632/5201 cut-off events. [2024-06-27 22:44:25,550 INFO L125 PetriNetUnfolderBase]: For 364618/364618 co-relation queries the response was YES. [2024-06-27 22:44:25,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37772 conditions, 5201 events. 2632/5201 cut-off events. For 364618/364618 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 40147 event pairs, 644 based on Foata normal form. 2/4859 useless extension candidates. Maximal degree in co-relation 37523. Up to 4399 conditions per place. [2024-06-27 22:44:25,631 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 559 selfloop transitions, 81 changer transitions 0/649 dead transitions. [2024-06-27 22:44:25,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 649 transitions, 10886 flow [2024-06-27 22:44:25,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:44:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:44:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:44:25,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:44:25,633 INFO L175 Difference]: Start difference. First operand has 526 places, 621 transitions, 9330 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:44:25,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 649 transitions, 10886 flow [2024-06-27 22:44:28,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 649 transitions, 10545 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-06-27 22:44:28,566 INFO L231 Difference]: Finished difference. Result has 528 places, 625 transitions, 9328 flow [2024-06-27 22:44:28,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8989, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9328, PETRI_PLACES=528, PETRI_TRANSITIONS=625} [2024-06-27 22:44:28,567 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 487 predicate places. [2024-06-27 22:44:28,567 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 625 transitions, 9328 flow [2024-06-27 22:44:28,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:28,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:28,567 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 22:44:28,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 22:44:28,567 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:28,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:28,568 INFO L85 PathProgramCache]: Analyzing trace with hash -873521126, now seen corresponding path program 25 times [2024-06-27 22:44:28,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:28,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345740088] [2024-06-27 22:44:28,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:28,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:30,106 INFO 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 22:44:30,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:30,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345740088] [2024-06-27 22:44:30,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345740088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:30,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:30,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:30,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907709058] [2024-06-27 22:44:30,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:30,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:30,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:30,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:30,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:30,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:44:30,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 625 transitions, 9328 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:30,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:30,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:44:30,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:32,029 INFO L124 PetriNetUnfolderBase]: 2656/5254 cut-off events. [2024-06-27 22:44:32,029 INFO L125 PetriNetUnfolderBase]: For 373281/373281 co-relation queries the response was YES. [2024-06-27 22:44:32,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38196 conditions, 5254 events. 2656/5254 cut-off events. For 373281/373281 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 40728 event pairs, 642 based on Foata normal form. 2/4912 useless extension candidates. Maximal degree in co-relation 37946. Up to 4399 conditions per place. [2024-06-27 22:44:32,111 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 568 selfloop transitions, 79 changer transitions 0/656 dead transitions. [2024-06-27 22:44:32,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 656 transitions, 10912 flow [2024-06-27 22:44:32,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:44:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:44:32,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:44:32,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 22:44:32,113 INFO L175 Difference]: Start difference. First operand has 528 places, 625 transitions, 9328 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:44:32,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 656 transitions, 10912 flow [2024-06-27 22:44:35,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 656 transitions, 10613 flow, removed 72 selfloop flow, removed 9 redundant places. [2024-06-27 22:44:35,523 INFO L231 Difference]: Finished difference. Result has 530 places, 627 transitions, 9272 flow [2024-06-27 22:44:35,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9029, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9272, PETRI_PLACES=530, PETRI_TRANSITIONS=627} [2024-06-27 22:44:35,524 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 489 predicate places. [2024-06-27 22:44:35,524 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 627 transitions, 9272 flow [2024-06-27 22:44:35,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:35,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:35,525 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 22:44:35,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 22:44:35,525 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:35,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:35,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1807681838, now seen corresponding path program 26 times [2024-06-27 22:44:35,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:35,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057037287] [2024-06-27 22:44:35,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:35,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:37,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057037287] [2024-06-27 22:44:37,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057037287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:37,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:37,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:44:37,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973306928] [2024-06-27 22:44:37,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:37,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:44:37,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:37,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:44:37,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:44:37,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:44:37,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 627 transitions, 9272 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:37,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:37,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:44:37,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:39,430 INFO L124 PetriNetUnfolderBase]: 2690/5311 cut-off events. [2024-06-27 22:44:39,430 INFO L125 PetriNetUnfolderBase]: For 378489/378489 co-relation queries the response was YES. [2024-06-27 22:44:39,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38644 conditions, 5311 events. 2690/5311 cut-off events. For 378489/378489 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 41153 event pairs, 605 based on Foata normal form. 2/4966 useless extension candidates. Maximal degree in co-relation 38393. Up to 4467 conditions per place. [2024-06-27 22:44:39,505 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 580 selfloop transitions, 69 changer transitions 0/658 dead transitions. [2024-06-27 22:44:39,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 658 transitions, 10886 flow [2024-06-27 22:44:39,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:44:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:44:39,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:44:39,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:44:39,507 INFO L175 Difference]: Start difference. First operand has 530 places, 627 transitions, 9272 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:44:39,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 658 transitions, 10886 flow [2024-06-27 22:44:42,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 658 transitions, 10709 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 22:44:42,679 INFO L231 Difference]: Finished difference. Result has 532 places, 634 transitions, 9470 flow [2024-06-27 22:44:42,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9095, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9470, PETRI_PLACES=532, PETRI_TRANSITIONS=634} [2024-06-27 22:44:42,680 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 491 predicate places. [2024-06-27 22:44:42,680 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 634 transitions, 9470 flow [2024-06-27 22:44:42,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:42,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:42,680 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 22:44:42,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 22:44:42,681 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:42,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1594564788, now seen corresponding path program 27 times [2024-06-27 22:44:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:42,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588128158] [2024-06-27 22:44:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:42,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:44,559 INFO 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 22:44:44,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:44,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588128158] [2024-06-27 22:44:44,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588128158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:44,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:44,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:44,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84900236] [2024-06-27 22:44:44,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:44,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:44,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:44,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:44,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:44,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:44:44,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 634 transitions, 9470 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:44,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:44,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:44:44,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:46,600 INFO L124 PetriNetUnfolderBase]: 2724/5376 cut-off events. [2024-06-27 22:44:46,600 INFO L125 PetriNetUnfolderBase]: For 396775/396775 co-relation queries the response was YES. [2024-06-27 22:44:46,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39765 conditions, 5376 events. 2724/5376 cut-off events. For 396775/396775 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 41742 event pairs, 637 based on Foata normal form. 2/5028 useless extension candidates. Maximal degree in co-relation 39513. Up to 4575 conditions per place. [2024-06-27 22:44:46,684 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 586 selfloop transitions, 68 changer transitions 0/663 dead transitions. [2024-06-27 22:44:46,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 663 transitions, 11164 flow [2024-06-27 22:44:46,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:44:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:44:46,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:44:46,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:44:46,685 INFO L175 Difference]: Start difference. First operand has 532 places, 634 transitions, 9470 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:44:46,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 663 transitions, 11164 flow [2024-06-27 22:44:49,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 663 transitions, 10885 flow, removed 76 selfloop flow, removed 9 redundant places. [2024-06-27 22:44:49,772 INFO L231 Difference]: Finished difference. Result has 535 places, 641 transitions, 9653 flow [2024-06-27 22:44:49,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9191, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9653, PETRI_PLACES=535, PETRI_TRANSITIONS=641} [2024-06-27 22:44:49,772 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 494 predicate places. [2024-06-27 22:44:49,772 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 641 transitions, 9653 flow [2024-06-27 22:44:49,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:49,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:49,773 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 22:44:49,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 22:44:49,773 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:49,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:49,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1504898838, now seen corresponding path program 28 times [2024-06-27 22:44:49,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:49,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779082138] [2024-06-27 22:44:49,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:49,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:51,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:51,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779082138] [2024-06-27 22:44:51,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779082138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:51,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:51,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:51,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585971524] [2024-06-27 22:44:51,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:51,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:51,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:51,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:51,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:51,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:44:51,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 641 transitions, 9653 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:51,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:51,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:44:51,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:53,224 INFO L124 PetriNetUnfolderBase]: 2764/5449 cut-off events. [2024-06-27 22:44:53,224 INFO L125 PetriNetUnfolderBase]: For 410907/410907 co-relation queries the response was YES. [2024-06-27 22:44:53,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40598 conditions, 5449 events. 2764/5449 cut-off events. For 410907/410907 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 42467 event pairs, 605 based on Foata normal form. 2/5096 useless extension candidates. Maximal degree in co-relation 40344. Up to 4531 conditions per place. [2024-06-27 22:44:53,313 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 593 selfloop transitions, 74 changer transitions 0/676 dead transitions. [2024-06-27 22:44:53,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 676 transitions, 11396 flow [2024-06-27 22:44:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:44:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:44:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:44:53,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:44:53,314 INFO L175 Difference]: Start difference. First operand has 535 places, 641 transitions, 9653 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:44:53,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 676 transitions, 11396 flow [2024-06-27 22:44:56,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 676 transitions, 11060 flow, removed 111 selfloop flow, removed 8 redundant places. [2024-06-27 22:44:56,951 INFO L231 Difference]: Finished difference. Result has 538 places, 649 transitions, 9788 flow [2024-06-27 22:44:56,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9317, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9788, PETRI_PLACES=538, PETRI_TRANSITIONS=649} [2024-06-27 22:44:56,952 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 497 predicate places. [2024-06-27 22:44:56,952 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 649 transitions, 9788 flow [2024-06-27 22:44:56,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:56,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:56,952 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 22:44:56,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 22:44:56,952 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:56,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:56,953 INFO L85 PathProgramCache]: Analyzing trace with hash -141206822, now seen corresponding path program 29 times [2024-06-27 22:44:56,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:56,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171735321] [2024-06-27 22:44:56,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:56,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:59,077 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 22:44:59,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:59,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171735321] [2024-06-27 22:44:59,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171735321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:59,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:59,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:44:59,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561320260] [2024-06-27 22:44:59,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:59,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:44:59,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:59,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:44:59,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:44:59,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:44:59,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 649 transitions, 9788 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:59,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:59,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:44:59,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:01,409 INFO L124 PetriNetUnfolderBase]: 2791/5501 cut-off events. [2024-06-27 22:45:01,409 INFO L125 PetriNetUnfolderBase]: For 414950/414950 co-relation queries the response was YES. [2024-06-27 22:45:01,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40741 conditions, 5501 events. 2791/5501 cut-off events. For 414950/414950 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 42954 event pairs, 660 based on Foata normal form. 2/5148 useless extension candidates. Maximal degree in co-relation 40486. Up to 4668 conditions per place. [2024-06-27 22:45:01,498 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 576 selfloop transitions, 92 changer transitions 0/677 dead transitions. [2024-06-27 22:45:01,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 677 transitions, 11422 flow [2024-06-27 22:45:01,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:45:01,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:45:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:45:01,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:45:01,499 INFO L175 Difference]: Start difference. First operand has 538 places, 649 transitions, 9788 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:45:01,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 677 transitions, 11422 flow [2024-06-27 22:45:04,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 677 transitions, 11063 flow, removed 112 selfloop flow, removed 9 redundant places. [2024-06-27 22:45:04,934 INFO L231 Difference]: Finished difference. Result has 540 places, 655 transitions, 9830 flow [2024-06-27 22:45:04,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9429, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9830, PETRI_PLACES=540, PETRI_TRANSITIONS=655} [2024-06-27 22:45:04,935 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 499 predicate places. [2024-06-27 22:45:04,935 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 655 transitions, 9830 flow [2024-06-27 22:45:04,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:04,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:04,935 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 22:45:04,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 22:45:04,935 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:04,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash 901329392, now seen corresponding path program 30 times [2024-06-27 22:45:04,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:04,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389716412] [2024-06-27 22:45:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:06,979 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 22:45:06,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:06,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389716412] [2024-06-27 22:45:06,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389716412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:06,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:06,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:45:06,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328226877] [2024-06-27 22:45:06,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:06,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:45:06,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:06,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:45:06,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:45:07,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:45:07,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 655 transitions, 9830 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:07,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:07,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:45:07,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:09,137 INFO L124 PetriNetUnfolderBase]: 2818/5552 cut-off events. [2024-06-27 22:45:09,137 INFO L125 PetriNetUnfolderBase]: For 417720/417720 co-relation queries the response was YES. [2024-06-27 22:45:09,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40818 conditions, 5552 events. 2818/5552 cut-off events. For 417720/417720 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 43495 event pairs, 669 based on Foata normal form. 2/5197 useless extension candidates. Maximal degree in co-relation 40562. Up to 4739 conditions per place. [2024-06-27 22:45:09,227 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 599 selfloop transitions, 75 changer transitions 0/683 dead transitions. [2024-06-27 22:45:09,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 683 transitions, 11480 flow [2024-06-27 22:45:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:45:09,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:45:09,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:45:09,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:45:09,228 INFO L175 Difference]: Start difference. First operand has 540 places, 655 transitions, 9830 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:45:09,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 683 transitions, 11480 flow [2024-06-27 22:45:13,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 683 transitions, 11147 flow, removed 79 selfloop flow, removed 9 redundant places. [2024-06-27 22:45:13,449 INFO L231 Difference]: Finished difference. Result has 542 places, 661 transitions, 9868 flow [2024-06-27 22:45:13,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9497, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9868, PETRI_PLACES=542, PETRI_TRANSITIONS=661} [2024-06-27 22:45:13,449 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 501 predicate places. [2024-06-27 22:45:13,449 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 661 transitions, 9868 flow [2024-06-27 22:45:13,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:13,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:13,450 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 22:45:13,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 22:45:13,450 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:13,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:13,451 INFO L85 PathProgramCache]: Analyzing trace with hash 901151762, now seen corresponding path program 31 times [2024-06-27 22:45:13,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:13,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666890949] [2024-06-27 22:45:13,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:13,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:15,279 INFO 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 22:45:15,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:15,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666890949] [2024-06-27 22:45:15,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666890949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:15,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:15,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:45:15,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941637312] [2024-06-27 22:45:15,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:15,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:45:15,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:15,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:45:15,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:45:15,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:45:15,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 661 transitions, 9868 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:15,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:15,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:45:15,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:17,458 INFO L124 PetriNetUnfolderBase]: 2845/5602 cut-off events. [2024-06-27 22:45:17,458 INFO L125 PetriNetUnfolderBase]: For 430443/430443 co-relation queries the response was YES. [2024-06-27 22:45:17,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41397 conditions, 5602 events. 2845/5602 cut-off events. For 430443/430443 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 43941 event pairs, 663 based on Foata normal form. 2/5246 useless extension candidates. Maximal degree in co-relation 41140. Up to 4752 conditions per place. [2024-06-27 22:45:17,548 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 607 selfloop transitions, 74 changer transitions 0/690 dead transitions. [2024-06-27 22:45:17,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 690 transitions, 11578 flow [2024-06-27 22:45:17,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:45:17,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:45:17,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:45:17,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 22:45:17,550 INFO L175 Difference]: Start difference. First operand has 542 places, 661 transitions, 9868 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:45:17,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 690 transitions, 11578 flow [2024-06-27 22:45:21,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 690 transitions, 11275 flow, removed 81 selfloop flow, removed 9 redundant places. [2024-06-27 22:45:21,432 INFO L231 Difference]: Finished difference. Result has 544 places, 666 transitions, 9969 flow [2024-06-27 22:45:21,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9565, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9969, PETRI_PLACES=544, PETRI_TRANSITIONS=666} [2024-06-27 22:45:21,433 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 503 predicate places. [2024-06-27 22:45:21,433 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 666 transitions, 9969 flow [2024-06-27 22:45:21,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:21,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:21,433 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 22:45:21,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 22:45:21,434 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:21,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:21,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1467016366, now seen corresponding path program 32 times [2024-06-27 22:45:21,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:21,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773091274] [2024-06-27 22:45:21,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:21,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:23,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:23,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773091274] [2024-06-27 22:45:23,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773091274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:23,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:23,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:45:23,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802306215] [2024-06-27 22:45:23,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:23,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:45:23,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:23,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:45:23,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:45:24,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:45:24,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 666 transitions, 9969 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:24,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:24,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:45:24,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:26,420 INFO L124 PetriNetUnfolderBase]: 2865/5640 cut-off events. [2024-06-27 22:45:26,420 INFO L125 PetriNetUnfolderBase]: For 440734/440734 co-relation queries the response was YES. [2024-06-27 22:45:26,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41763 conditions, 5640 events. 2865/5640 cut-off events. For 440734/440734 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 44311 event pairs, 686 based on Foata normal form. 2/5281 useless extension candidates. Maximal degree in co-relation 41505. Up to 4737 conditions per place. [2024-06-27 22:45:26,504 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 553 selfloop transitions, 130 changer transitions 0/692 dead transitions. [2024-06-27 22:45:26,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 692 transitions, 11635 flow [2024-06-27 22:45:26,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:45:26,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:45:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:45:26,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:45:26,505 INFO L175 Difference]: Start difference. First operand has 544 places, 666 transitions, 9969 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:45:26,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 692 transitions, 11635 flow [2024-06-27 22:45:30,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 692 transitions, 11306 flow, removed 105 selfloop flow, removed 8 redundant places. [2024-06-27 22:45:30,583 INFO L231 Difference]: Finished difference. Result has 547 places, 670 transitions, 10106 flow [2024-06-27 22:45:30,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9640, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10106, PETRI_PLACES=547, PETRI_TRANSITIONS=670} [2024-06-27 22:45:30,584 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 506 predicate places. [2024-06-27 22:45:30,584 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 670 transitions, 10106 flow [2024-06-27 22:45:30,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:30,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:30,584 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 22:45:30,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 22:45:30,584 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:30,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:30,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1688661406, now seen corresponding path program 33 times [2024-06-27 22:45:30,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:30,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050262560] [2024-06-27 22:45:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:30,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:32,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:32,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050262560] [2024-06-27 22:45:32,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050262560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:32,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:32,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:45:32,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300005807] [2024-06-27 22:45:32,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:32,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:45:32,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:32,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:45:32,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:45:32,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:45:32,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 670 transitions, 10106 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:32,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:32,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:45:32,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:34,945 INFO L124 PetriNetUnfolderBase]: 2885/5678 cut-off events. [2024-06-27 22:45:34,945 INFO L125 PetriNetUnfolderBase]: For 447672/447672 co-relation queries the response was YES. [2024-06-27 22:45:35,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41995 conditions, 5678 events. 2885/5678 cut-off events. For 447672/447672 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 44666 event pairs, 688 based on Foata normal form. 2/5317 useless extension candidates. Maximal degree in co-relation 41736. Up to 4838 conditions per place. [2024-06-27 22:45:35,040 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 598 selfloop transitions, 89 changer transitions 0/696 dead transitions. [2024-06-27 22:45:35,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 696 transitions, 11784 flow [2024-06-27 22:45:35,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:45:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:45:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:45:35,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:45:35,041 INFO L175 Difference]: Start difference. First operand has 547 places, 670 transitions, 10106 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:45:35,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 696 transitions, 11784 flow [2024-06-27 22:45:39,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 696 transitions, 11356 flow, removed 87 selfloop flow, removed 9 redundant places. [2024-06-27 22:45:39,744 INFO L231 Difference]: Finished difference. Result has 549 places, 674 transitions, 10066 flow [2024-06-27 22:45:39,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9678, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10066, PETRI_PLACES=549, PETRI_TRANSITIONS=674} [2024-06-27 22:45:39,745 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 508 predicate places. [2024-06-27 22:45:39,745 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 674 transitions, 10066 flow [2024-06-27 22:45:39,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:39,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:39,745 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 22:45:39,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 22:45:39,745 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:39,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:39,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1694917516, now seen corresponding path program 34 times [2024-06-27 22:45:39,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:39,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345242559] [2024-06-27 22:45:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:39,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:41,533 INFO 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 22:45:41,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:41,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345242559] [2024-06-27 22:45:41,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345242559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:41,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:41,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:45:41,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203301575] [2024-06-27 22:45:41,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:41,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:45:41,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:41,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:45:41,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:45:41,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:45:41,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 674 transitions, 10066 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:41,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:41,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:45:41,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:43,826 INFO L124 PetriNetUnfolderBase]: 2905/5715 cut-off events. [2024-06-27 22:45:43,826 INFO L125 PetriNetUnfolderBase]: For 456383/456383 co-relation queries the response was YES. [2024-06-27 22:45:43,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42217 conditions, 5715 events. 2905/5715 cut-off events. For 456383/456383 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 44942 event pairs, 696 based on Foata normal form. 2/5353 useless extension candidates. Maximal degree in co-relation 41957. Up to 4861 conditions per place. [2024-06-27 22:45:43,916 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 597 selfloop transitions, 94 changer transitions 0/700 dead transitions. [2024-06-27 22:45:43,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 700 transitions, 11756 flow [2024-06-27 22:45:43,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:45:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:45:43,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:45:43,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:45:43,921 INFO L175 Difference]: Start difference. First operand has 549 places, 674 transitions, 10066 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:45:43,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 700 transitions, 11756 flow [2024-06-27 22:45:48,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 700 transitions, 11406 flow, removed 89 selfloop flow, removed 9 redundant places. [2024-06-27 22:45:48,358 INFO L231 Difference]: Finished difference. Result has 551 places, 678 transitions, 10118 flow [2024-06-27 22:45:48,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9716, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10118, PETRI_PLACES=551, PETRI_TRANSITIONS=678} [2024-06-27 22:45:48,359 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 510 predicate places. [2024-06-27 22:45:48,359 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 678 transitions, 10118 flow [2024-06-27 22:45:48,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:48,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:48,359 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 22:45:48,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 22:45:48,359 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:48,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:48,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1695095146, now seen corresponding path program 35 times [2024-06-27 22:45:48,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:48,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099000570] [2024-06-27 22:45:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:48,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15