./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe029_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 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/safe029_tso.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe029_tso.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-dev-3d25acf-m [2024-01-30 14:18:43,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:18:43,576 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:18:43,581 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:18:43,582 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:18:43,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:18:43,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:18:43,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:18:43,609 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:18:43,612 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:18:43,612 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:18:43,613 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:18:43,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:18:43,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:18:43,615 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:18:43,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:18:43,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:18:43,615 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:18:43,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:18:43,616 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:18:43,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:18:43,616 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:18:43,617 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:18:43,617 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:18:43,617 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:18:43,617 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:18:43,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:18:43,618 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:18:43,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:18:43,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:18:43,619 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:18:43,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:18:43,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:18:43,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:18:43,620 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:18:43,620 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:18:43,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:18:43,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:18:43,621 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:18:43,621 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:18:43,621 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:18:43,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:18:43,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:18:43,622 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:18:43,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:18:43,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:18:43,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:18:43,860 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:18:43,861 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:18:43,861 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-01-30 14:18:44,904 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:18:45,111 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:18:45,111 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-01-30 14:18:45,125 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7497796d8/0fc6859d9e4046f89c3a2ed6a517c998/FLAGb40c78f90 [2024-01-30 14:18:45,141 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7497796d8/0fc6859d9e4046f89c3a2ed6a517c998 [2024-01-30 14:18:45,154 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:18:45,154 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:18:45,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe029_tso.yml/witness.yml [2024-01-30 14:18:45,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:18:45,332 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:18:45,333 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:18:45,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:18:45,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:18:45,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:18:45" (1/2) ... [2024-01-30 14:18:45,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@715a540f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:18:45, skipping insertion in model container [2024-01-30 14:18:45,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:18:45" (1/2) ... [2024-01-30 14:18:45,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@170061ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:18:45, skipping insertion in model container [2024-01-30 14:18:45,340 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:18:45" (2/2) ... [2024-01-30 14:18:45,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@715a540f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45, skipping insertion in model container [2024-01-30 14:18:45,341 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:18:45" (2/2) ... [2024-01-30 14:18:45,341 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:18:45,490 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:18:45,492 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] (unsigned long )arg == 0UL [2024-01-30 14:18:45,492 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,492 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (((((((((((0 <= x) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,492 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,492 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] (unsigned long )arg == 0UL [2024-01-30 14:18:45,493 INFO L98 nessWitnessExtractor]: Location invariant before [L757-L757] ((((__unbuffered_cnt == 0) && (main$tmp_guard0 == (_Bool)0)) && (main$tmp_guard1 == (_Bool)0)) && (x == 0)) && (y == 0) [2024-01-30 14:18:45,493 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L728] (unsigned long )arg == 0UL [2024-01-30 14:18:45,493 INFO L98 nessWitnessExtractor]: Location invariant before [L743-L743] (unsigned long )arg == 0UL [2024-01-30 14:18:45,493 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] ((((((((0 <= __unbuffered_cnt) && (0 <= y)) && (y <= 2)) && (y <= 127)) && (x == 1)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,494 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] ((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,494 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-30 14:18:45,494 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,494 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] ((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,494 INFO L98 nessWitnessExtractor]: Location invariant before [L738-L738] (unsigned long )arg == 0UL [2024-01-30 14:18:45,494 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] ((((expression == 0) && (0 <= expression)) && (expression <= 1)) && (expression == 0 || expression == 1)) && (expression == 1) [2024-01-30 14:18:45,494 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-01-30 14:18:45,495 INFO L98 nessWitnessExtractor]: Location invariant before [L735-L735] (unsigned long )arg == 0UL [2024-01-30 14:18:45,495 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,495 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,495 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] (((((((((((0 <= x) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,495 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] ((((((((0 <= __unbuffered_cnt) && (0 <= y)) && (y <= 2)) && (y <= 127)) && (x == 2)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,496 INFO L98 nessWitnessExtractor]: Location invariant before [L767-L767] (((((((0 <= __unbuffered_cnt) && (0 <= y)) && (y <= 2)) && (y <= 127)) && (x == 2)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,496 INFO L98 nessWitnessExtractor]: Location invariant before [L740-L740] (unsigned long )arg == 0UL [2024-01-30 14:18:45,496 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,496 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] ((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,496 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] ((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (x <= 2)) && (x <= 127)) && (y == 1)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2) [2024-01-30 14:18:45,496 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,497 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] ((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (x <= 2)) && (x <= 127)) && (y == 2)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2) [2024-01-30 14:18:45,497 INFO L98 nessWitnessExtractor]: Location invariant before [L768-L768] ((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,497 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] (unsigned long )arg == 0UL [2024-01-30 14:18:45,497 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-30 14:18:45,534 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:18:45,670 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i[945,958] [2024-01-30 14:18:45,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:18:45,800 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:18:45,815 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i[945,958] [2024-01-30 14:18:45,815 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int expression) { if (!expression) { ERROR: {reach_error();abort();} }; return; } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:18:45,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:18:45,977 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:18:45,977 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45 WrapperNode [2024-01-30 14:18:45,977 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:18:45,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:18:45,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:18:45,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:18:45,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45" (1/1) ... [2024-01-30 14:18:46,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45" (1/1) ... [2024-01-30 14:18:46,041 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2024-01-30 14:18:46,042 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:18:46,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:18:46,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:18:46,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:18:46,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45" (1/1) ... [2024-01-30 14:18:46,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45" (1/1) ... [2024-01-30 14:18:46,063 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45" (1/1) ... [2024-01-30 14:18:46,084 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-30 14:18:46,085 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45" (1/1) ... [2024-01-30 14:18:46,085 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45" (1/1) ... [2024-01-30 14:18:46,101 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45" (1/1) ... [2024-01-30 14:18:46,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45" (1/1) ... [2024-01-30 14:18:46,107 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45" (1/1) ... [2024-01-30 14:18:46,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45" (1/1) ... [2024-01-30 14:18:46,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:18:46,116 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:18:46,116 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:18:46,116 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:18:46,117 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45" (1/1) ... [2024-01-30 14:18:46,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:18:46,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:18:46,140 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) [2024-01-30 14:18:46,157 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 [2024-01-30 14:18:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:18:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:18:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:18:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-30 14:18:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:18:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:18:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:18:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-30 14:18:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-30 14:18:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-30 14:18:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-30 14:18:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:18:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:18:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:18:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-30 14:18:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:18:46,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:18:46,193 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:18:46,317 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:18:46,320 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:18:46,700 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:18:46,701 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:18:46,833 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:18:46,834 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-30 14:18:46,835 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:18:46 BoogieIcfgContainer [2024-01-30 14:18:46,835 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:18:46,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:18:46,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:18:46,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:18:46,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:18:45" (1/4) ... [2024-01-30 14:18:46,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2d78f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:18:46, skipping insertion in model container [2024-01-30 14:18:46,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:18:45" (2/4) ... [2024-01-30 14:18:46,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2d78f0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:18:46, skipping insertion in model container [2024-01-30 14:18:46,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:18:45" (3/4) ... [2024-01-30 14:18:46,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2d78f0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:18:46, skipping insertion in model container [2024-01-30 14:18:46,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:18:46" (4/4) ... [2024-01-30 14:18:46,844 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2024-01-30 14:18:46,858 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:18:46,858 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2024-01-30 14:18:46,858 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:18:46,925 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-30 14:18:46,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 68 transitions, 144 flow [2024-01-30 14:18:46,993 INFO L124 PetriNetUnfolderBase]: 1/66 cut-off events. [2024-01-30 14:18:46,994 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:18:46,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 1/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 223 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2024-01-30 14:18:46,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 68 transitions, 144 flow [2024-01-30 14:18:47,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 66 transitions, 138 flow [2024-01-30 14:18:47,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:18:47,017 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;@212e6fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:18:47,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-01-30 14:18:47,019 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:18:47,019 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:18:47,019 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:18:47,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:47,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:18:47,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:47,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:47,024 INFO L85 PathProgramCache]: Analyzing trace with hash 9588, now seen corresponding path program 1 times [2024-01-30 14:18:47,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:47,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814516824] [2024-01-30 14:18:47,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:47,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:47,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:47,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814516824] [2024-01-30 14:18:47,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814516824] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:47,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:47,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:18:47,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900463052] [2024-01-30 14:18:47,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:47,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:18:47,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:47,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:18:47,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:18:47,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 68 [2024-01-30 14:18:47,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:47,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:47,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 68 [2024-01-30 14:18:47,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:48,062 INFO L124 PetriNetUnfolderBase]: 1835/3437 cut-off events. [2024-01-30 14:18:48,062 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-01-30 14:18:48,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 3437 events. 1835/3437 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 26107 event pairs, 1363 based on Foata normal form. 100/2153 useless extension candidates. Maximal degree in co-relation 6376. Up to 2897 conditions per place. [2024-01-30 14:18:48,086 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 38 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-01-30 14:18:48,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 219 flow [2024-01-30 14:18:48,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:18:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:18:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-01-30 14:18:48,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6421568627450981 [2024-01-30 14:18:48,098 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 138 flow. Second operand 3 states and 131 transitions. [2024-01-30 14:18:48,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 219 flow [2024-01-30 14:18:48,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:18:48,107 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 137 flow [2024-01-30 14:18:48,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-01-30 14:18:48,112 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2024-01-30 14:18:48,112 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 137 flow [2024-01-30 14:18:48,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:48,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:48,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:18:48,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:18:48,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:48,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash 286016975, now seen corresponding path program 1 times [2024-01-30 14:18:48,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:48,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174833506] [2024-01-30 14:18:48,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:48,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:48,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:48,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:48,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174833506] [2024-01-30 14:18:48,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174833506] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:48,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:48,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:18:48,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148050192] [2024-01-30 14:18:48,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:48,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:18:48,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:48,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:18:48,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:18:48,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-01-30 14:18:48,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:48,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:48,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-01-30 14:18:48,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:48,662 INFO L124 PetriNetUnfolderBase]: 2004/3688 cut-off events. [2024-01-30 14:18:48,662 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2024-01-30 14:18:48,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7325 conditions, 3688 events. 2004/3688 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 27597 event pairs, 1378 based on Foata normal form. 432/3010 useless extension candidates. Maximal degree in co-relation 7312. Up to 3018 conditions per place. [2024-01-30 14:18:48,681 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 55 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-01-30 14:18:48,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 74 transitions, 292 flow [2024-01-30 14:18:48,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:18:48,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:18:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-01-30 14:18:48,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147058823529411 [2024-01-30 14:18:48,687 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 137 flow. Second operand 4 states and 140 transitions. [2024-01-30 14:18:48,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 74 transitions, 292 flow [2024-01-30 14:18:48,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 74 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:18:48,689 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 128 flow [2024-01-30 14:18:48,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-01-30 14:18:48,690 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2024-01-30 14:18:48,690 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 128 flow [2024-01-30 14:18:48,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:48,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:48,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-30 14:18:48,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:18:48,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:48,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:48,692 INFO L85 PathProgramCache]: Analyzing trace with hash 276591977, now seen corresponding path program 1 times [2024-01-30 14:18:48,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:48,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062474652] [2024-01-30 14:18:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:48,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:48,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:48,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062474652] [2024-01-30 14:18:48,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062474652] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:48,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:48,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:18:48,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131798134] [2024-01-30 14:18:48,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:48,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:18:48,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:18:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:18:48,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 68 [2024-01-30 14:18:48,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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) [2024-01-30 14:18:48,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:48,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 68 [2024-01-30 14:18:48,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:49,346 INFO L124 PetriNetUnfolderBase]: 2764/4908 cut-off events. [2024-01-30 14:18:49,347 INFO L125 PetriNetUnfolderBase]: For 548/554 co-relation queries the response was YES. [2024-01-30 14:18:49,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9924 conditions, 4908 events. 2764/4908 cut-off events. For 548/554 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 35488 event pairs, 2064 based on Foata normal form. 11/3562 useless extension candidates. Maximal degree in co-relation 9910. Up to 4329 conditions per place. [2024-01-30 14:18:49,375 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 48 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2024-01-30 14:18:49,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 268 flow [2024-01-30 14:18:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:18:49,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:18:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-01-30 14:18:49,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911764705882354 [2024-01-30 14:18:49,377 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 128 flow. Second operand 4 states and 114 transitions. [2024-01-30 14:18:49,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 268 flow [2024-01-30 14:18:49,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:18:49,380 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 151 flow [2024-01-30 14:18:49,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-01-30 14:18:49,381 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2024-01-30 14:18:49,381 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 151 flow [2024-01-30 14:18:49,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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) [2024-01-30 14:18:49,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:49,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:49,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:18:49,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:49,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:49,382 INFO L85 PathProgramCache]: Analyzing trace with hash -16939315, now seen corresponding path program 1 times [2024-01-30 14:18:49,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:49,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735922629] [2024-01-30 14:18:49,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:49,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:49,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:49,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735922629] [2024-01-30 14:18:49,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735922629] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:49,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:49,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:18:49,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524043994] [2024-01-30 14:18:49,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:49,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:18:49,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:49,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:18:49,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:18:49,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-01-30 14:18:49,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:49,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:49,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-01-30 14:18:49,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:49,882 INFO L124 PetriNetUnfolderBase]: 2060/3657 cut-off events. [2024-01-30 14:18:49,882 INFO L125 PetriNetUnfolderBase]: For 500/508 co-relation queries the response was YES. [2024-01-30 14:18:49,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7548 conditions, 3657 events. 2060/3657 cut-off events. For 500/508 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 25387 event pairs, 1105 based on Foata normal form. 462/3113 useless extension candidates. Maximal degree in co-relation 7532. Up to 3119 conditions per place. [2024-01-30 14:18:49,899 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 61 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2024-01-30 14:18:49,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 333 flow [2024-01-30 14:18:49,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:18:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:18:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-01-30 14:18:49,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5330882352941176 [2024-01-30 14:18:49,901 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 151 flow. Second operand 4 states and 145 transitions. [2024-01-30 14:18:49,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 333 flow [2024-01-30 14:18:49,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 321 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:18:49,902 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 137 flow [2024-01-30 14:18:49,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-01-30 14:18:49,903 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2024-01-30 14:18:49,903 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 137 flow [2024-01-30 14:18:49,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:49,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:49,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:49,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:18:49,904 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:49,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:49,905 INFO L85 PathProgramCache]: Analyzing trace with hash -525118399, now seen corresponding path program 1 times [2024-01-30 14:18:49,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:49,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349390843] [2024-01-30 14:18:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:49,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:50,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:50,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349390843] [2024-01-30 14:18:50,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349390843] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:50,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:50,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:18:50,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877718758] [2024-01-30 14:18:50,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:50,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:18:50,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:50,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:18:50,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:18:50,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 68 [2024-01-30 14:18:50,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:50,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:50,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 68 [2024-01-30 14:18:50,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:50,467 INFO L124 PetriNetUnfolderBase]: 2844/4942 cut-off events. [2024-01-30 14:18:50,467 INFO L125 PetriNetUnfolderBase]: For 674/682 co-relation queries the response was YES. [2024-01-30 14:18:50,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10298 conditions, 4942 events. 2844/4942 cut-off events. For 674/682 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 33964 event pairs, 2305 based on Foata normal form. 11/3632 useless extension candidates. Maximal degree in co-relation 10283. Up to 4537 conditions per place. [2024-01-30 14:18:50,491 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 44 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2024-01-30 14:18:50,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 264 flow [2024-01-30 14:18:50,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:18:50,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:18:50,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-01-30 14:18:50,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40441176470588236 [2024-01-30 14:18:50,493 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 137 flow. Second operand 4 states and 110 transitions. [2024-01-30 14:18:50,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 264 flow [2024-01-30 14:18:50,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:18:50,494 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 164 flow [2024-01-30 14:18:50,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-01-30 14:18:50,495 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -9 predicate places. [2024-01-30 14:18:50,495 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 164 flow [2024-01-30 14:18:50,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:50,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:50,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:50,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:18:50,496 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:50,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:50,497 INFO L85 PathProgramCache]: Analyzing trace with hash -483070388, now seen corresponding path program 1 times [2024-01-30 14:18:50,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:50,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350606690] [2024-01-30 14:18:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:50,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:50,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:50,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350606690] [2024-01-30 14:18:50,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350606690] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:50,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:50,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:18:50,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140317458] [2024-01-30 14:18:50,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:50,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:18:50,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:50,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:18:50,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:18:50,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:50,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:50,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:50,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:50,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:51,079 INFO L124 PetriNetUnfolderBase]: 2644/4652 cut-off events. [2024-01-30 14:18:51,079 INFO L125 PetriNetUnfolderBase]: For 711/732 co-relation queries the response was YES. [2024-01-30 14:18:51,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9783 conditions, 4652 events. 2644/4652 cut-off events. For 711/732 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 32776 event pairs, 1809 based on Foata normal form. 12/3411 useless extension candidates. Maximal degree in co-relation 9765. Up to 4131 conditions per place. [2024-01-30 14:18:51,099 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 52 selfloop transitions, 8 changer transitions 0/69 dead transitions. [2024-01-30 14:18:51,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 329 flow [2024-01-30 14:18:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:18:51,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:18:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-01-30 14:18:51,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176470588235294 [2024-01-30 14:18:51,101 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 164 flow. Second operand 5 states and 142 transitions. [2024-01-30 14:18:51,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 329 flow [2024-01-30 14:18:51,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:18:51,102 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 195 flow [2024-01-30 14:18:51,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-01-30 14:18:51,103 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2024-01-30 14:18:51,103 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 195 flow [2024-01-30 14:18:51,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:51,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:51,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:51,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:18:51,104 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:51,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2127645120, now seen corresponding path program 1 times [2024-01-30 14:18:51,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:51,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170232156] [2024-01-30 14:18:51,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:51,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:51,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:51,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170232156] [2024-01-30 14:18:51,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170232156] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:51,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:51,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:18:51,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252837741] [2024-01-30 14:18:51,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:51,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:18:51,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:51,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:18:51,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:18:51,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:51,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:51,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:51,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:51,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:51,514 INFO L124 PetriNetUnfolderBase]: 1740/3201 cut-off events. [2024-01-30 14:18:51,514 INFO L125 PetriNetUnfolderBase]: For 1052/1054 co-relation queries the response was YES. [2024-01-30 14:18:51,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7038 conditions, 3201 events. 1740/3201 cut-off events. For 1052/1054 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 23113 event pairs, 1290 based on Foata normal form. 14/2256 useless extension candidates. Maximal degree in co-relation 7018. Up to 2777 conditions per place. [2024-01-30 14:18:51,532 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 42 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-01-30 14:18:51,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 64 transitions, 319 flow [2024-01-30 14:18:51,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:18:51,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:18:51,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-01-30 14:18:51,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5551470588235294 [2024-01-30 14:18:51,534 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 195 flow. Second operand 4 states and 151 transitions. [2024-01-30 14:18:51,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 64 transitions, 319 flow [2024-01-30 14:18:51,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 64 transitions, 305 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-30 14:18:51,536 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 213 flow [2024-01-30 14:18:51,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-01-30 14:18:51,537 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2024-01-30 14:18:51,537 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 213 flow [2024-01-30 14:18:51,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:51,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:51,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:51,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:18:51,538 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:51,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:51,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2127595036, now seen corresponding path program 1 times [2024-01-30 14:18:51,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:51,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618109869] [2024-01-30 14:18:51,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:51,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:51,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:51,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618109869] [2024-01-30 14:18:51,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618109869] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:51,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:51,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:18:51,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236403174] [2024-01-30 14:18:51,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:51,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:18:51,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:51,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:18:51,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:18:51,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:51,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:51,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:51,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:51,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:52,135 INFO L124 PetriNetUnfolderBase]: 2562/4549 cut-off events. [2024-01-30 14:18:52,135 INFO L125 PetriNetUnfolderBase]: For 2388/2396 co-relation queries the response was YES. [2024-01-30 14:18:52,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10594 conditions, 4549 events. 2562/4549 cut-off events. For 2388/2396 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 31525 event pairs, 1876 based on Foata normal form. 17/3456 useless extension candidates. Maximal degree in co-relation 10573. Up to 4063 conditions per place. [2024-01-30 14:18:52,153 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 50 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2024-01-30 14:18:52,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 356 flow [2024-01-30 14:18:52,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:18:52,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:18:52,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-01-30 14:18:52,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-01-30 14:18:52,154 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 213 flow. Second operand 5 states and 136 transitions. [2024-01-30 14:18:52,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 356 flow [2024-01-30 14:18:52,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 344 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-30 14:18:52,157 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 223 flow [2024-01-30 14:18:52,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2024-01-30 14:18:52,158 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2024-01-30 14:18:52,158 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 223 flow [2024-01-30 14:18:52,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:52,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:52,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:52,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-30 14:18:52,158 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:52,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:52,159 INFO L85 PathProgramCache]: Analyzing trace with hash -374162673, now seen corresponding path program 1 times [2024-01-30 14:18:52,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:52,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107892951] [2024-01-30 14:18:52,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:52,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:52,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:52,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107892951] [2024-01-30 14:18:52,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107892951] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:52,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:52,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:18:52,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123025117] [2024-01-30 14:18:52,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:52,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:18:52,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:52,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:18:52,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:18:52,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:52,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:52,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:52,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:52,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:52,669 INFO L124 PetriNetUnfolderBase]: 1528/2774 cut-off events. [2024-01-30 14:18:52,670 INFO L125 PetriNetUnfolderBase]: For 2286/2307 co-relation queries the response was YES. [2024-01-30 14:18:52,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6622 conditions, 2774 events. 1528/2774 cut-off events. For 2286/2307 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17301 event pairs, 322 based on Foata normal form. 150/2402 useless extension candidates. Maximal degree in co-relation 6600. Up to 1340 conditions per place. [2024-01-30 14:18:52,681 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 97 selfloop transitions, 19 changer transitions 0/125 dead transitions. [2024-01-30 14:18:52,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 125 transitions, 657 flow [2024-01-30 14:18:52,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 214 transitions. [2024-01-30 14:18:52,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245098039215687 [2024-01-30 14:18:52,683 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 223 flow. Second operand 6 states and 214 transitions. [2024-01-30 14:18:52,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 125 transitions, 657 flow [2024-01-30 14:18:52,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 125 transitions, 639 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:52,686 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 345 flow [2024-01-30 14:18:52,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-01-30 14:18:52,687 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 4 predicate places. [2024-01-30 14:18:52,687 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 345 flow [2024-01-30 14:18:52,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:52,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:52,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:52,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-30 14:18:52,688 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:52,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash 400812610, now seen corresponding path program 1 times [2024-01-30 14:18:52,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:52,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369214337] [2024-01-30 14:18:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:52,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:52,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:52,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369214337] [2024-01-30 14:18:52,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369214337] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:52,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:52,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:18:52,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294864838] [2024-01-30 14:18:52,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:52,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:18:52,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:52,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:18:52,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:18:52,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:52,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:52,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:52,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:52,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:53,097 INFO L124 PetriNetUnfolderBase]: 1499/2740 cut-off events. [2024-01-30 14:18:53,097 INFO L125 PetriNetUnfolderBase]: For 4024/4032 co-relation queries the response was YES. [2024-01-30 14:18:53,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7675 conditions, 2740 events. 1499/2740 cut-off events. For 4024/4032 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 17054 event pairs, 907 based on Foata normal form. 11/2535 useless extension candidates. Maximal degree in co-relation 7649. Up to 2458 conditions per place. [2024-01-30 14:18:53,112 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 65 selfloop transitions, 10 changer transitions 0/85 dead transitions. [2024-01-30 14:18:53,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 545 flow [2024-01-30 14:18:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:18:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:18:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-01-30 14:18:53,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-01-30 14:18:53,114 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 345 flow. Second operand 5 states and 140 transitions. [2024-01-30 14:18:53,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 545 flow [2024-01-30 14:18:53,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 537 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-01-30 14:18:53,120 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 385 flow [2024-01-30 14:18:53,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-01-30 14:18:53,121 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2024-01-30 14:18:53,121 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 385 flow [2024-01-30 14:18:53,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:53,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:53,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:53,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-30 14:18:53,122 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:53,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:53,122 INFO L85 PathProgramCache]: Analyzing trace with hash -165546876, now seen corresponding path program 2 times [2024-01-30 14:18:53,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:53,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275437621] [2024-01-30 14:18:53,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:53,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:53,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:53,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275437621] [2024-01-30 14:18:53,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275437621] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:53,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:53,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:18:53,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853173863] [2024-01-30 14:18:53,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:53,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:18:53,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:53,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:18:53,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:18:53,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:53,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:53,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:53,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:53,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:53,564 INFO L124 PetriNetUnfolderBase]: 1494/2725 cut-off events. [2024-01-30 14:18:53,564 INFO L125 PetriNetUnfolderBase]: For 4259/4267 co-relation queries the response was YES. [2024-01-30 14:18:53,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7737 conditions, 2725 events. 1494/2725 cut-off events. For 4259/4267 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16973 event pairs, 914 based on Foata normal form. 11/2519 useless extension candidates. Maximal degree in co-relation 7707. Up to 2455 conditions per place. [2024-01-30 14:18:53,575 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 61 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2024-01-30 14:18:53,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 82 transitions, 561 flow [2024-01-30 14:18:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:18:53,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:18:53,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-01-30 14:18:53,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-01-30 14:18:53,577 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 385 flow. Second operand 5 states and 136 transitions. [2024-01-30 14:18:53,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 82 transitions, 561 flow [2024-01-30 14:18:53,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 539 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-30 14:18:53,581 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 401 flow [2024-01-30 14:18:53,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-01-30 14:18:53,582 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 12 predicate places. [2024-01-30 14:18:53,583 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 401 flow [2024-01-30 14:18:53,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:53,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:53,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:53,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-30 14:18:53,584 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:53,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:53,584 INFO L85 PathProgramCache]: Analyzing trace with hash -165546216, now seen corresponding path program 1 times [2024-01-30 14:18:53,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:53,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156850135] [2024-01-30 14:18:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:53,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:53,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:53,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156850135] [2024-01-30 14:18:53,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156850135] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:53,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:53,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:18:53,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860909693] [2024-01-30 14:18:53,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:53,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:18:53,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:53,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:18:53,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:18:53,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:53,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 401 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:53,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:53,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:53,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:54,033 INFO L124 PetriNetUnfolderBase]: 1536/2763 cut-off events. [2024-01-30 14:18:54,034 INFO L125 PetriNetUnfolderBase]: For 4003/4039 co-relation queries the response was YES. [2024-01-30 14:18:54,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7851 conditions, 2763 events. 1536/2763 cut-off events. For 4003/4039 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 17214 event pairs, 908 based on Foata normal form. 7/2470 useless extension candidates. Maximal degree in co-relation 7820. Up to 2498 conditions per place. [2024-01-30 14:18:54,048 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 68 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2024-01-30 14:18:54,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 617 flow [2024-01-30 14:18:54,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:18:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:18:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-01-30 14:18:54,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088235294117647 [2024-01-30 14:18:54,050 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 401 flow. Second operand 5 states and 139 transitions. [2024-01-30 14:18:54,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 617 flow [2024-01-30 14:18:54,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 602 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:18:54,055 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 446 flow [2024-01-30 14:18:54,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2024-01-30 14:18:54,056 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 16 predicate places. [2024-01-30 14:18:54,056 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 446 flow [2024-01-30 14:18:54,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:54,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:54,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:54,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-30 14:18:54,057 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:54,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:54,057 INFO L85 PathProgramCache]: Analyzing trace with hash 419853160, now seen corresponding path program 2 times [2024-01-30 14:18:54,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:54,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424616909] [2024-01-30 14:18:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:54,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:54,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:54,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:54,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424616909] [2024-01-30 14:18:54,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424616909] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:54,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:54,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:18:54,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475100715] [2024-01-30 14:18:54,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:54,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:18:54,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:54,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:18:54,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:18:54,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:54,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:54,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:54,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:54,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:54,512 INFO L124 PetriNetUnfolderBase]: 1531/2759 cut-off events. [2024-01-30 14:18:54,512 INFO L125 PetriNetUnfolderBase]: For 4279/4301 co-relation queries the response was YES. [2024-01-30 14:18:54,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7907 conditions, 2759 events. 1531/2759 cut-off events. For 4279/4301 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 17146 event pairs, 905 based on Foata normal form. 4/2465 useless extension candidates. Maximal degree in co-relation 7873. Up to 2495 conditions per place. [2024-01-30 14:18:54,531 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 66 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-01-30 14:18:54,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 87 transitions, 624 flow [2024-01-30 14:18:54,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:18:54,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:18:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-01-30 14:18:54,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40294117647058825 [2024-01-30 14:18:54,532 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 446 flow. Second operand 5 states and 137 transitions. [2024-01-30 14:18:54,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 87 transitions, 624 flow [2024-01-30 14:18:54,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 87 transitions, 614 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-30 14:18:54,538 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 463 flow [2024-01-30 14:18:54,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=463, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2024-01-30 14:18:54,539 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2024-01-30 14:18:54,539 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 463 flow [2024-01-30 14:18:54,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:54,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:54,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:54,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-30 14:18:54,540 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:54,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:54,540 INFO L85 PathProgramCache]: Analyzing trace with hash -262469443, now seen corresponding path program 1 times [2024-01-30 14:18:54,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:54,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137202448] [2024-01-30 14:18:54,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:54,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:54,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:54,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137202448] [2024-01-30 14:18:54,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137202448] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:54,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:54,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:18:54,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759188796] [2024-01-30 14:18:54,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:54,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:18:54,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:54,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:18:54,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:18:54,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:54,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:54,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:54,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:54,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:54,988 INFO L124 PetriNetUnfolderBase]: 1195/2266 cut-off events. [2024-01-30 14:18:54,989 INFO L125 PetriNetUnfolderBase]: For 4179/4190 co-relation queries the response was YES. [2024-01-30 14:18:54,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6523 conditions, 2266 events. 1195/2266 cut-off events. For 4179/4190 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15230 event pairs, 395 based on Foata normal form. 44/2063 useless extension candidates. Maximal degree in co-relation 6487. Up to 1177 conditions per place. [2024-01-30 14:18:55,002 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 74 selfloop transitions, 22 changer transitions 0/114 dead transitions. [2024-01-30 14:18:55,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 114 transitions, 789 flow [2024-01-30 14:18:55,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:18:55,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:18:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 213 transitions. [2024-01-30 14:18:55,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6264705882352941 [2024-01-30 14:18:55,004 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 463 flow. Second operand 5 states and 213 transitions. [2024-01-30 14:18:55,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 114 transitions, 789 flow [2024-01-30 14:18:55,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 114 transitions, 757 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-30 14:18:55,009 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 504 flow [2024-01-30 14:18:55,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=504, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-01-30 14:18:55,010 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2024-01-30 14:18:55,010 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 504 flow [2024-01-30 14:18:55,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:55,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:55,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:55,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-30 14:18:55,011 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:55,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:55,011 INFO L85 PathProgramCache]: Analyzing trace with hash -214383769, now seen corresponding path program 1 times [2024-01-30 14:18:55,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:55,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053629162] [2024-01-30 14:18:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:55,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:55,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:55,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053629162] [2024-01-30 14:18:55,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053629162] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:55,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:55,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:18:55,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999302724] [2024-01-30 14:18:55,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:55,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:18:55,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:55,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:18:55,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:18:55,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:55,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 504 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:18:55,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:55,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:55,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:55,542 INFO L124 PetriNetUnfolderBase]: 1498/2756 cut-off events. [2024-01-30 14:18:55,542 INFO L125 PetriNetUnfolderBase]: For 5271/5282 co-relation queries the response was YES. [2024-01-30 14:18:55,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8269 conditions, 2756 events. 1498/2756 cut-off events. For 5271/5282 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 17342 event pairs, 368 based on Foata normal form. 41/2599 useless extension candidates. Maximal degree in co-relation 8233. Up to 1402 conditions per place. [2024-01-30 14:18:55,554 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 89 selfloop transitions, 26 changer transitions 0/126 dead transitions. [2024-01-30 14:18:55,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 126 transitions, 890 flow [2024-01-30 14:18:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-01-30 14:18:55,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4877450980392157 [2024-01-30 14:18:55,556 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 504 flow. Second operand 6 states and 199 transitions. [2024-01-30 14:18:55,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 126 transitions, 890 flow [2024-01-30 14:18:55,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 126 transitions, 873 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-30 14:18:55,562 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 572 flow [2024-01-30 14:18:55,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=572, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2024-01-30 14:18:55,563 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 26 predicate places. [2024-01-30 14:18:55,563 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 572 flow [2024-01-30 14:18:55,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:18:55,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:55,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:55,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-30 14:18:55,563 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:55,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:55,564 INFO L85 PathProgramCache]: Analyzing trace with hash -894908601, now seen corresponding path program 1 times [2024-01-30 14:18:55,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:55,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933728490] [2024-01-30 14:18:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:55,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:55,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:55,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933728490] [2024-01-30 14:18:55,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933728490] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:55,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:55,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:18:55,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641303516] [2024-01-30 14:18:55,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:55,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:18:55,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:55,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:18:55,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:18:55,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:55,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 572 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:55,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:55,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:55,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:55,962 INFO L124 PetriNetUnfolderBase]: 1050/1996 cut-off events. [2024-01-30 14:18:55,962 INFO L125 PetriNetUnfolderBase]: For 5472/5482 co-relation queries the response was YES. [2024-01-30 14:18:55,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6349 conditions, 1996 events. 1050/1996 cut-off events. For 5472/5482 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12708 event pairs, 403 based on Foata normal form. 18/1865 useless extension candidates. Maximal degree in co-relation 6310. Up to 1125 conditions per place. [2024-01-30 14:18:55,974 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 74 selfloop transitions, 23 changer transitions 0/116 dead transitions. [2024-01-30 14:18:55,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 116 transitions, 918 flow [2024-01-30 14:18:55,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:18:55,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:18:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 210 transitions. [2024-01-30 14:18:55,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2024-01-30 14:18:55,975 INFO L175 Difference]: Start difference. First operand has 98 places, 82 transitions, 572 flow. Second operand 5 states and 210 transitions. [2024-01-30 14:18:55,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 116 transitions, 918 flow [2024-01-30 14:18:55,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 116 transitions, 866 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:55,982 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 602 flow [2024-01-30 14:18:55,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=602, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2024-01-30 14:18:55,983 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 27 predicate places. [2024-01-30 14:18:55,983 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 602 flow [2024-01-30 14:18:55,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:55,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:55,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:55,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-30 14:18:55,984 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:55,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:55,984 INFO L85 PathProgramCache]: Analyzing trace with hash -176140477, now seen corresponding path program 2 times [2024-01-30 14:18:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:55,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566359434] [2024-01-30 14:18:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:55,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:56,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:56,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566359434] [2024-01-30 14:18:56,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566359434] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:56,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:56,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:18:56,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129206077] [2024-01-30 14:18:56,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:56,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:18:56,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:56,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:18:56,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:18:56,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:56,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 602 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:56,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:56,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:56,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:56,361 INFO L124 PetriNetUnfolderBase]: 1022/1926 cut-off events. [2024-01-30 14:18:56,362 INFO L125 PetriNetUnfolderBase]: For 5618/5635 co-relation queries the response was YES. [2024-01-30 14:18:56,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6173 conditions, 1926 events. 1022/1926 cut-off events. For 5618/5635 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12095 event pairs, 408 based on Foata normal form. 23/1794 useless extension candidates. Maximal degree in co-relation 6133. Up to 1115 conditions per place. [2024-01-30 14:18:56,373 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 71 selfloop transitions, 23 changer transitions 0/113 dead transitions. [2024-01-30 14:18:56,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 113 transitions, 900 flow [2024-01-30 14:18:56,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:18:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:18:56,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-01-30 14:18:56,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6088235294117647 [2024-01-30 14:18:56,375 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 602 flow. Second operand 5 states and 207 transitions. [2024-01-30 14:18:56,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 113 transitions, 900 flow [2024-01-30 14:18:56,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 113 transitions, 871 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-30 14:18:56,383 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 627 flow [2024-01-30 14:18:56,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=627, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2024-01-30 14:18:56,384 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 30 predicate places. [2024-01-30 14:18:56,384 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 627 flow [2024-01-30 14:18:56,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:56,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:56,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:56,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-30 14:18:56,384 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:56,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:56,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2109602502, now seen corresponding path program 1 times [2024-01-30 14:18:56,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:56,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271496419] [2024-01-30 14:18:56,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:56,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:56,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:56,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271496419] [2024-01-30 14:18:56,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271496419] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:56,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:56,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:18:56,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810750187] [2024-01-30 14:18:56,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:56,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:18:56,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:56,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:18:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:18:56,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:56,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 627 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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) [2024-01-30 14:18:56,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:56,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:56,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:56,933 INFO L124 PetriNetUnfolderBase]: 1658/3039 cut-off events. [2024-01-30 14:18:56,934 INFO L125 PetriNetUnfolderBase]: For 8706/8717 co-relation queries the response was YES. [2024-01-30 14:18:56,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9626 conditions, 3039 events. 1658/3039 cut-off events. For 8706/8717 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 19259 event pairs, 528 based on Foata normal form. 32/2930 useless extension candidates. Maximal degree in co-relation 9585. Up to 1448 conditions per place. [2024-01-30 14:18:56,950 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 96 selfloop transitions, 39 changer transitions 0/146 dead transitions. [2024-01-30 14:18:56,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 146 transitions, 1182 flow [2024-01-30 14:18:56,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-01-30 14:18:56,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171568627450981 [2024-01-30 14:18:56,952 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 627 flow. Second operand 6 states and 211 transitions. [2024-01-30 14:18:56,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 146 transitions, 1182 flow [2024-01-30 14:18:56,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 146 transitions, 1058 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-30 14:18:56,963 INFO L231 Difference]: Finished difference. Result has 104 places, 99 transitions, 769 flow [2024-01-30 14:18:56,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=769, PETRI_PLACES=104, PETRI_TRANSITIONS=99} [2024-01-30 14:18:56,963 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 32 predicate places. [2024-01-30 14:18:56,963 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 99 transitions, 769 flow [2024-01-30 14:18:56,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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) [2024-01-30 14:18:56,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:56,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:56,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-30 14:18:56,964 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:56,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:56,965 INFO L85 PathProgramCache]: Analyzing trace with hash -194248927, now seen corresponding path program 1 times [2024-01-30 14:18:56,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:56,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164008633] [2024-01-30 14:18:56,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:56,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:57,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:57,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:57,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164008633] [2024-01-30 14:18:57,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164008633] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:57,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:57,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:18:57,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384525272] [2024-01-30 14:18:57,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:57,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:18:57,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:57,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:18:57,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:18:57,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:57,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 99 transitions, 769 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:57,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:57,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:57,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:57,550 INFO L124 PetriNetUnfolderBase]: 1648/3041 cut-off events. [2024-01-30 14:18:57,550 INFO L125 PetriNetUnfolderBase]: For 8003/8020 co-relation queries the response was YES. [2024-01-30 14:18:57,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10312 conditions, 3041 events. 1648/3041 cut-off events. For 8003/8020 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 19399 event pairs, 541 based on Foata normal form. 32/2932 useless extension candidates. Maximal degree in co-relation 10268. Up to 1451 conditions per place. [2024-01-30 14:18:57,568 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 98 selfloop transitions, 47 changer transitions 0/156 dead transitions. [2024-01-30 14:18:57,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 156 transitions, 1315 flow [2024-01-30 14:18:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:57,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 212 transitions. [2024-01-30 14:18:57,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196078431372549 [2024-01-30 14:18:57,569 INFO L175 Difference]: Start difference. First operand has 104 places, 99 transitions, 769 flow. Second operand 6 states and 212 transitions. [2024-01-30 14:18:57,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 156 transitions, 1315 flow [2024-01-30 14:18:57,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 156 transitions, 1274 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-30 14:18:57,583 INFO L231 Difference]: Finished difference. Result has 108 places, 109 transitions, 945 flow [2024-01-30 14:18:57,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=945, PETRI_PLACES=108, PETRI_TRANSITIONS=109} [2024-01-30 14:18:57,584 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 36 predicate places. [2024-01-30 14:18:57,584 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 109 transitions, 945 flow [2024-01-30 14:18:57,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:57,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:57,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:57,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-30 14:18:57,585 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:57,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:57,585 INFO L85 PathProgramCache]: Analyzing trace with hash -194235397, now seen corresponding path program 1 times [2024-01-30 14:18:57,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:57,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459948635] [2024-01-30 14:18:57,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:57,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:57,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:57,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459948635] [2024-01-30 14:18:57,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459948635] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:57,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:57,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:18:57,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434967041] [2024-01-30 14:18:57,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:57,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:18:57,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:57,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:18:57,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:18:57,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:57,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 109 transitions, 945 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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) [2024-01-30 14:18:57,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:57,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:57,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:58,186 INFO L124 PetriNetUnfolderBase]: 1945/3488 cut-off events. [2024-01-30 14:18:58,186 INFO L125 PetriNetUnfolderBase]: For 12875/13030 co-relation queries the response was YES. [2024-01-30 14:18:58,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12818 conditions, 3488 events. 1945/3488 cut-off events. For 12875/13030 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 21366 event pairs, 497 based on Foata normal form. 91/3377 useless extension candidates. Maximal degree in co-relation 12773. Up to 1712 conditions per place. [2024-01-30 14:18:58,208 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 94 selfloop transitions, 39 changer transitions 0/152 dead transitions. [2024-01-30 14:18:58,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 152 transitions, 1390 flow [2024-01-30 14:18:58,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-01-30 14:18:58,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852941176470588 [2024-01-30 14:18:58,210 INFO L175 Difference]: Start difference. First operand has 108 places, 109 transitions, 945 flow. Second operand 6 states and 198 transitions. [2024-01-30 14:18:58,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 152 transitions, 1390 flow [2024-01-30 14:18:58,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 152 transitions, 1308 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:58,232 INFO L231 Difference]: Finished difference. Result has 110 places, 109 transitions, 955 flow [2024-01-30 14:18:58,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=955, PETRI_PLACES=110, PETRI_TRANSITIONS=109} [2024-01-30 14:18:58,232 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 38 predicate places. [2024-01-30 14:18:58,232 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 109 transitions, 955 flow [2024-01-30 14:18:58,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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) [2024-01-30 14:18:58,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:58,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:58,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-30 14:18:58,233 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:58,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:58,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1366125659, now seen corresponding path program 1 times [2024-01-30 14:18:58,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:58,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749104226] [2024-01-30 14:18:58,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:58,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:58,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:58,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749104226] [2024-01-30 14:18:58,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749104226] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:58,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:58,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:18:58,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124692691] [2024-01-30 14:18:58,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:58,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:18:58,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:58,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:18:58,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:18:58,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:58,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 109 transitions, 955 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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) [2024-01-30 14:18:58,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:58,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:58,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:58,779 INFO L124 PetriNetUnfolderBase]: 1588/2927 cut-off events. [2024-01-30 14:18:58,779 INFO L125 PetriNetUnfolderBase]: For 10048/10065 co-relation queries the response was YES. [2024-01-30 14:18:58,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10859 conditions, 2927 events. 1588/2927 cut-off events. For 10048/10065 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18436 event pairs, 575 based on Foata normal form. 17/2803 useless extension candidates. Maximal degree in co-relation 10813. Up to 1448 conditions per place. [2024-01-30 14:18:58,799 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 93 selfloop transitions, 46 changer transitions 0/150 dead transitions. [2024-01-30 14:18:58,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 150 transitions, 1445 flow [2024-01-30 14:18:58,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:58,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 202 transitions. [2024-01-30 14:18:58,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4950980392156863 [2024-01-30 14:18:58,801 INFO L175 Difference]: Start difference. First operand has 110 places, 109 transitions, 955 flow. Second operand 6 states and 202 transitions. [2024-01-30 14:18:58,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 150 transitions, 1445 flow [2024-01-30 14:18:58,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 150 transitions, 1367 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-30 14:18:58,820 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 979 flow [2024-01-30 14:18:58,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=979, PETRI_PLACES=111, PETRI_TRANSITIONS=109} [2024-01-30 14:18:58,821 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 39 predicate places. [2024-01-30 14:18:58,821 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 979 flow [2024-01-30 14:18:58,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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) [2024-01-30 14:18:58,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:58,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:58,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-30 14:18:58,822 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:58,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:58,822 INFO L85 PathProgramCache]: Analyzing trace with hash -176111557, now seen corresponding path program 2 times [2024-01-30 14:18:58,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:58,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831194298] [2024-01-30 14:18:58,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:58,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:58,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:58,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831194298] [2024-01-30 14:18:58,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831194298] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:58,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:58,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:18:58,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354711109] [2024-01-30 14:18:58,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:58,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:18:58,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:58,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:18:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:18:58,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:58,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 979 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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) [2024-01-30 14:18:58,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:58,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:58,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:59,501 INFO L124 PetriNetUnfolderBase]: 2107/3776 cut-off events. [2024-01-30 14:18:59,502 INFO L125 PetriNetUnfolderBase]: For 15231/15404 co-relation queries the response was YES. [2024-01-30 14:18:59,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14448 conditions, 3776 events. 2107/3776 cut-off events. For 15231/15404 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 23548 event pairs, 564 based on Foata normal form. 115/3680 useless extension candidates. Maximal degree in co-relation 14401. Up to 1736 conditions per place. [2024-01-30 14:18:59,530 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 104 selfloop transitions, 38 changer transitions 0/161 dead transitions. [2024-01-30 14:18:59,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 161 transitions, 1586 flow [2024-01-30 14:18:59,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-01-30 14:18:59,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47794117647058826 [2024-01-30 14:18:59,533 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 979 flow. Second operand 6 states and 195 transitions. [2024-01-30 14:18:59,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 161 transitions, 1586 flow [2024-01-30 14:18:59,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 161 transitions, 1508 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:59,567 INFO L231 Difference]: Finished difference. Result has 114 places, 118 transitions, 1123 flow [2024-01-30 14:18:59,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1123, PETRI_PLACES=114, PETRI_TRANSITIONS=118} [2024-01-30 14:18:59,567 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 42 predicate places. [2024-01-30 14:18:59,567 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 118 transitions, 1123 flow [2024-01-30 14:18:59,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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) [2024-01-30 14:18:59,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:59,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:59,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-30 14:18:59,568 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:59,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:59,569 INFO L85 PathProgramCache]: Analyzing trace with hash -271023617, now seen corresponding path program 2 times [2024-01-30 14:18:59,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:59,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988469831] [2024-01-30 14:18:59,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:59,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:59,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:59,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988469831] [2024-01-30 14:18:59,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988469831] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:59,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:59,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:18:59,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392268139] [2024-01-30 14:18:59,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:59,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:18:59,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:59,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:18:59,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:18:59,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:59,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 118 transitions, 1123 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:59,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:59,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:59,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:00,207 INFO L124 PetriNetUnfolderBase]: 1780/3272 cut-off events. [2024-01-30 14:19:00,208 INFO L125 PetriNetUnfolderBase]: For 13128/13145 co-relation queries the response was YES. [2024-01-30 14:19:00,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12950 conditions, 3272 events. 1780/3272 cut-off events. For 13128/13145 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 21088 event pairs, 520 based on Foata normal form. 32/3160 useless extension candidates. Maximal degree in co-relation 12901. Up to 1478 conditions per place. [2024-01-30 14:19:00,231 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 102 selfloop transitions, 49 changer transitions 0/162 dead transitions. [2024-01-30 14:19:00,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 162 transitions, 1714 flow [2024-01-30 14:19:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-01-30 14:19:00,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47794117647058826 [2024-01-30 14:19:00,235 INFO L175 Difference]: Start difference. First operand has 114 places, 118 transitions, 1123 flow. Second operand 6 states and 195 transitions. [2024-01-30 14:19:00,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 162 transitions, 1714 flow [2024-01-30 14:19:00,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 162 transitions, 1680 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-30 14:19:00,270 INFO L231 Difference]: Finished difference. Result has 119 places, 126 transitions, 1346 flow [2024-01-30 14:19:00,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1346, PETRI_PLACES=119, PETRI_TRANSITIONS=126} [2024-01-30 14:19:00,270 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 47 predicate places. [2024-01-30 14:19:00,271 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 126 transitions, 1346 flow [2024-01-30 14:19:00,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:00,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:00,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:00,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-30 14:19:00,271 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:00,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:00,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1145961259, now seen corresponding path program 2 times [2024-01-30 14:19:00,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:00,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847190013] [2024-01-30 14:19:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:00,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:00,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:00,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:00,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847190013] [2024-01-30 14:19:00,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847190013] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:00,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:00,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:00,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872544198] [2024-01-30 14:19:00,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:00,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:00,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:00,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:00,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:00,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:00,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 126 transitions, 1346 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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) [2024-01-30 14:19:00,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:00,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:00,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:00,844 INFO L124 PetriNetUnfolderBase]: 1666/3050 cut-off events. [2024-01-30 14:19:00,844 INFO L125 PetriNetUnfolderBase]: For 14999/15016 co-relation queries the response was YES. [2024-01-30 14:19:00,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12439 conditions, 3050 events. 1666/3050 cut-off events. For 14999/15016 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 19044 event pairs, 463 based on Foata normal form. 62/2968 useless extension candidates. Maximal degree in co-relation 12388. Up to 1460 conditions per place. [2024-01-30 14:19:00,862 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 97 selfloop transitions, 51 changer transitions 0/159 dead transitions. [2024-01-30 14:19:00,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 159 transitions, 1807 flow [2024-01-30 14:19:00,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:00,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:00,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-01-30 14:19:00,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681372549019608 [2024-01-30 14:19:00,864 INFO L175 Difference]: Start difference. First operand has 119 places, 126 transitions, 1346 flow. Second operand 6 states and 191 transitions. [2024-01-30 14:19:00,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 159 transitions, 1807 flow [2024-01-30 14:19:00,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 159 transitions, 1777 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:19:00,893 INFO L231 Difference]: Finished difference. Result has 123 places, 126 transitions, 1440 flow [2024-01-30 14:19:00,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1440, PETRI_PLACES=123, PETRI_TRANSITIONS=126} [2024-01-30 14:19:00,894 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 51 predicate places. [2024-01-30 14:19:00,894 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 126 transitions, 1440 flow [2024-01-30 14:19:00,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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) [2024-01-30 14:19:00,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:00,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:00,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-30 14:19:00,895 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:00,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:00,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1145962069, now seen corresponding path program 1 times [2024-01-30 14:19:00,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:00,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490753465] [2024-01-30 14:19:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:00,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:01,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:01,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490753465] [2024-01-30 14:19:01,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490753465] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:01,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:01,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:01,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399595829] [2024-01-30 14:19:01,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:01,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:01,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:01,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:01,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:01,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:01,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 126 transitions, 1440 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:01,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:01,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:01,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:01,510 INFO L124 PetriNetUnfolderBase]: 1889/3411 cut-off events. [2024-01-30 14:19:01,510 INFO L125 PetriNetUnfolderBase]: For 23690/23829 co-relation queries the response was YES. [2024-01-30 14:19:01,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14581 conditions, 3411 events. 1889/3411 cut-off events. For 23690/23829 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20771 event pairs, 565 based on Foata normal form. 82/3292 useless extension candidates. Maximal degree in co-relation 14529. Up to 1715 conditions per place. [2024-01-30 14:19:01,532 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 99 selfloop transitions, 45 changer transitions 0/163 dead transitions. [2024-01-30 14:19:01,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 163 transitions, 1884 flow [2024-01-30 14:19:01,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:01,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:01,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-01-30 14:19:01,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730392156862745 [2024-01-30 14:19:01,533 INFO L175 Difference]: Start difference. First operand has 123 places, 126 transitions, 1440 flow. Second operand 6 states and 193 transitions. [2024-01-30 14:19:01,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 163 transitions, 1884 flow [2024-01-30 14:19:01,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 163 transitions, 1780 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-30 14:19:01,574 INFO L231 Difference]: Finished difference. Result has 124 places, 126 transitions, 1443 flow [2024-01-30 14:19:01,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1443, PETRI_PLACES=124, PETRI_TRANSITIONS=126} [2024-01-30 14:19:01,574 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 52 predicate places. [2024-01-30 14:19:01,574 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 126 transitions, 1443 flow [2024-01-30 14:19:01,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:01,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:01,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:01,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-30 14:19:01,575 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:01,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:01,575 INFO L85 PathProgramCache]: Analyzing trace with hash -248026997, now seen corresponding path program 3 times [2024-01-30 14:19:01,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:01,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240212364] [2024-01-30 14:19:01,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:01,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:01,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:01,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240212364] [2024-01-30 14:19:01,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240212364] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:01,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:01,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:01,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888588725] [2024-01-30 14:19:01,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:01,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:01,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:01,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:01,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:01,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:01,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 126 transitions, 1443 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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) [2024-01-30 14:19:01,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:01,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:01,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:02,197 INFO L124 PetriNetUnfolderBase]: 1971/3518 cut-off events. [2024-01-30 14:19:02,197 INFO L125 PetriNetUnfolderBase]: For 26523/26690 co-relation queries the response was YES. [2024-01-30 14:19:02,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15525 conditions, 3518 events. 1971/3518 cut-off events. For 26523/26690 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 21392 event pairs, 727 based on Foata normal form. 101/3422 useless extension candidates. Maximal degree in co-relation 15472. Up to 1755 conditions per place. [2024-01-30 14:19:02,216 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 90 selfloop transitions, 61 changer transitions 0/170 dead transitions. [2024-01-30 14:19:02,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 170 transitions, 2055 flow [2024-01-30 14:19:02,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:02,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:02,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-01-30 14:19:02,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681372549019608 [2024-01-30 14:19:02,217 INFO L175 Difference]: Start difference. First operand has 124 places, 126 transitions, 1443 flow. Second operand 6 states and 191 transitions. [2024-01-30 14:19:02,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 170 transitions, 2055 flow [2024-01-30 14:19:02,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 170 transitions, 1933 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-30 14:19:02,253 INFO L231 Difference]: Finished difference. Result has 126 places, 137 transitions, 1621 flow [2024-01-30 14:19:02,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1621, PETRI_PLACES=126, PETRI_TRANSITIONS=137} [2024-01-30 14:19:02,254 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 54 predicate places. [2024-01-30 14:19:02,254 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 137 transitions, 1621 flow [2024-01-30 14:19:02,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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) [2024-01-30 14:19:02,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:02,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:02,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-30 14:19:02,255 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:02,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:02,255 INFO L85 PathProgramCache]: Analyzing trace with hash -248003163, now seen corresponding path program 2 times [2024-01-30 14:19:02,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:02,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852109381] [2024-01-30 14:19:02,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:02,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:02,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:02,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852109381] [2024-01-30 14:19:02,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852109381] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:02,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:02,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:02,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504357366] [2024-01-30 14:19:02,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:02,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:02,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:02,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:02,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:02,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:02,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 137 transitions, 1621 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:02,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:02,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:02,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:02,895 INFO L124 PetriNetUnfolderBase]: 2017/3612 cut-off events. [2024-01-30 14:19:02,896 INFO L125 PetriNetUnfolderBase]: For 27530/27720 co-relation queries the response was YES. [2024-01-30 14:19:02,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16701 conditions, 3612 events. 2017/3612 cut-off events. For 27530/27720 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 22191 event pairs, 721 based on Foata normal form. 107/3522 useless extension candidates. Maximal degree in co-relation 16646. Up to 1773 conditions per place. [2024-01-30 14:19:02,922 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 90 selfloop transitions, 67 changer transitions 0/176 dead transitions. [2024-01-30 14:19:02,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 176 transitions, 2203 flow [2024-01-30 14:19:02,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:02,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-01-30 14:19:02,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47549019607843135 [2024-01-30 14:19:02,923 INFO L175 Difference]: Start difference. First operand has 126 places, 137 transitions, 1621 flow. Second operand 6 states and 194 transitions. [2024-01-30 14:19:02,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 176 transitions, 2203 flow [2024-01-30 14:19:02,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 176 transitions, 2116 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-30 14:19:02,970 INFO L231 Difference]: Finished difference. Result has 130 places, 144 transitions, 1833 flow [2024-01-30 14:19:02,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1833, PETRI_PLACES=130, PETRI_TRANSITIONS=144} [2024-01-30 14:19:02,970 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 58 predicate places. [2024-01-30 14:19:02,971 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 144 transitions, 1833 flow [2024-01-30 14:19:02,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:02,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:02,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:02,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-30 14:19:02,971 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:02,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:02,972 INFO L85 PathProgramCache]: Analyzing trace with hash -247196853, now seen corresponding path program 3 times [2024-01-30 14:19:02,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:02,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552132913] [2024-01-30 14:19:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:02,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:03,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:03,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552132913] [2024-01-30 14:19:03,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552132913] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:03,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:03,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:03,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603093983] [2024-01-30 14:19:03,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:03,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:03,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:03,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:03,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:03,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:03,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 144 transitions, 1833 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:03,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:03,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:03,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:03,664 INFO L124 PetriNetUnfolderBase]: 2053/3666 cut-off events. [2024-01-30 14:19:03,664 INFO L125 PetriNetUnfolderBase]: For 30067/30263 co-relation queries the response was YES. [2024-01-30 14:19:03,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17535 conditions, 3666 events. 2053/3666 cut-off events. For 30067/30263 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 22577 event pairs, 721 based on Foata normal form. 95/3561 useless extension candidates. Maximal degree in co-relation 17478. Up to 1791 conditions per place. [2024-01-30 14:19:03,685 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 90 selfloop transitions, 78 changer transitions 0/187 dead transitions. [2024-01-30 14:19:03,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 187 transitions, 2432 flow [2024-01-30 14:19:03,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:03,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:03,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-01-30 14:19:03,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730392156862745 [2024-01-30 14:19:03,686 INFO L175 Difference]: Start difference. First operand has 130 places, 144 transitions, 1833 flow. Second operand 6 states and 193 transitions. [2024-01-30 14:19:03,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 187 transitions, 2432 flow [2024-01-30 14:19:03,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 187 transitions, 2334 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:19:03,738 INFO L231 Difference]: Finished difference. Result has 134 places, 156 transitions, 2071 flow [2024-01-30 14:19:03,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2071, PETRI_PLACES=134, PETRI_TRANSITIONS=156} [2024-01-30 14:19:03,743 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 62 predicate places. [2024-01-30 14:19:03,743 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 156 transitions, 2071 flow [2024-01-30 14:19:03,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:03,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:03,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:03,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-30 14:19:03,744 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:03,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:03,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1276402348, now seen corresponding path program 1 times [2024-01-30 14:19:03,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:03,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403216917] [2024-01-30 14:19:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:03,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:03,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:03,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403216917] [2024-01-30 14:19:03,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403216917] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:03,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:03,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:03,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664407644] [2024-01-30 14:19:03,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:03,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:19:03,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:03,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:19:03,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:19:03,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:03,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 156 transitions, 2071 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:03,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:03,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:03,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:04,331 INFO L124 PetriNetUnfolderBase]: 1689/3220 cut-off events. [2024-01-30 14:19:04,332 INFO L125 PetriNetUnfolderBase]: For 32174/32318 co-relation queries the response was YES. [2024-01-30 14:19:04,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15936 conditions, 3220 events. 1689/3220 cut-off events. For 32174/32318 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21629 event pairs, 385 based on Foata normal form. 92/3097 useless extension candidates. Maximal degree in co-relation 15877. Up to 1493 conditions per place. [2024-01-30 14:19:04,356 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 207 selfloop transitions, 58 changer transitions 0/300 dead transitions. [2024-01-30 14:19:04,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 300 transitions, 4519 flow [2024-01-30 14:19:04,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:04,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:04,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 254 transitions. [2024-01-30 14:19:04,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6225490196078431 [2024-01-30 14:19:04,358 INFO L175 Difference]: Start difference. First operand has 134 places, 156 transitions, 2071 flow. Second operand 6 states and 254 transitions. [2024-01-30 14:19:04,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 300 transitions, 4519 flow [2024-01-30 14:19:04,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 300 transitions, 4234 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-30 14:19:04,409 INFO L231 Difference]: Finished difference. Result has 138 places, 212 transitions, 3163 flow [2024-01-30 14:19:04,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3163, PETRI_PLACES=138, PETRI_TRANSITIONS=212} [2024-01-30 14:19:04,410 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 66 predicate places. [2024-01-30 14:19:04,410 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 212 transitions, 3163 flow [2024-01-30 14:19:04,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:04,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:04,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:04,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-30 14:19:04,411 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:04,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:04,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1501317584, now seen corresponding path program 1 times [2024-01-30 14:19:04,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:04,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542241592] [2024-01-30 14:19:04,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:04,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:04,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:04,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542241592] [2024-01-30 14:19:04,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542241592] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:04,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:04,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:04,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733065696] [2024-01-30 14:19:04,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:04,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:19:04,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:04,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:19:04,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:19:04,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:04,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 212 transitions, 3163 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:04,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:04,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:04,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:05,096 INFO L124 PetriNetUnfolderBase]: 1763/3342 cut-off events. [2024-01-30 14:19:05,096 INFO L125 PetriNetUnfolderBase]: For 35204/35376 co-relation queries the response was YES. [2024-01-30 14:19:05,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17078 conditions, 3342 events. 1763/3342 cut-off events. For 35204/35376 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 22701 event pairs, 503 based on Foata normal form. 96/3186 useless extension candidates. Maximal degree in co-relation 17016. Up to 1500 conditions per place. [2024-01-30 14:19:05,119 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 202 selfloop transitions, 62 changer transitions 0/299 dead transitions. [2024-01-30 14:19:05,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 299 transitions, 4589 flow [2024-01-30 14:19:05,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 248 transitions. [2024-01-30 14:19:05,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-01-30 14:19:05,121 INFO L175 Difference]: Start difference. First operand has 138 places, 212 transitions, 3163 flow. Second operand 6 states and 248 transitions. [2024-01-30 14:19:05,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 299 transitions, 4589 flow [2024-01-30 14:19:05,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 299 transitions, 4583 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-01-30 14:19:05,187 INFO L231 Difference]: Finished difference. Result has 147 places, 243 transitions, 3846 flow [2024-01-30 14:19:05,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3157, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3846, PETRI_PLACES=147, PETRI_TRANSITIONS=243} [2024-01-30 14:19:05,188 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 75 predicate places. [2024-01-30 14:19:05,188 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 243 transitions, 3846 flow [2024-01-30 14:19:05,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:05,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:05,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:05,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-01-30 14:19:05,189 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:05,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:05,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1222187459, now seen corresponding path program 1 times [2024-01-30 14:19:05,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:05,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470587921] [2024-01-30 14:19:05,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:05,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:05,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:05,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470587921] [2024-01-30 14:19:05,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470587921] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:05,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:05,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:19:05,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449903325] [2024-01-30 14:19:05,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:05,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:19:05,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:05,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:19:05,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:19:05,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:05,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 243 transitions, 3846 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:05,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:05,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:05,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:05,904 INFO L124 PetriNetUnfolderBase]: 1788/3392 cut-off events. [2024-01-30 14:19:05,904 INFO L125 PetriNetUnfolderBase]: For 42655/42847 co-relation queries the response was YES. [2024-01-30 14:19:05,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18666 conditions, 3392 events. 1788/3392 cut-off events. For 42655/42847 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 23237 event pairs, 561 based on Foata normal form. 74/3240 useless extension candidates. Maximal degree in co-relation 18598. Up to 1831 conditions per place. [2024-01-30 14:19:05,932 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 125 selfloop transitions, 113 changer transitions 0/273 dead transitions. [2024-01-30 14:19:05,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 273 transitions, 4540 flow [2024-01-30 14:19:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:19:05,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:19:05,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 201 transitions. [2024-01-30 14:19:05,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911764705882353 [2024-01-30 14:19:05,934 INFO L175 Difference]: Start difference. First operand has 147 places, 243 transitions, 3846 flow. Second operand 5 states and 201 transitions. [2024-01-30 14:19:05,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 273 transitions, 4540 flow [2024-01-30 14:19:06,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 273 transitions, 4513 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-30 14:19:06,020 INFO L231 Difference]: Finished difference. Result has 151 places, 245 transitions, 4083 flow [2024-01-30 14:19:06,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3825, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4083, PETRI_PLACES=151, PETRI_TRANSITIONS=245} [2024-01-30 14:19:06,021 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 79 predicate places. [2024-01-30 14:19:06,021 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 245 transitions, 4083 flow [2024-01-30 14:19:06,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:06,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:06,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:06,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-01-30 14:19:06,021 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:06,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:06,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1699906627, now seen corresponding path program 2 times [2024-01-30 14:19:06,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:06,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337174356] [2024-01-30 14:19:06,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:06,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:06,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:06,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337174356] [2024-01-30 14:19:06,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337174356] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:06,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:06,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:19:06,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360367320] [2024-01-30 14:19:06,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:06,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:19:06,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:06,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:19:06,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:19:06,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:06,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 245 transitions, 4083 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:06,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:06,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:06,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:06,635 INFO L124 PetriNetUnfolderBase]: 1739/3295 cut-off events. [2024-01-30 14:19:06,635 INFO L125 PetriNetUnfolderBase]: For 46578/46772 co-relation queries the response was YES. [2024-01-30 14:19:06,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18505 conditions, 3295 events. 1739/3295 cut-off events. For 46578/46772 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 22445 event pairs, 555 based on Foata normal form. 71/3115 useless extension candidates. Maximal degree in co-relation 18435. Up to 1797 conditions per place. [2024-01-30 14:19:06,663 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 122 selfloop transitions, 113 changer transitions 0/270 dead transitions. [2024-01-30 14:19:06,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 270 transitions, 4723 flow [2024-01-30 14:19:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:19:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:19:06,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-01-30 14:19:06,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5823529411764706 [2024-01-30 14:19:06,677 INFO L175 Difference]: Start difference. First operand has 151 places, 245 transitions, 4083 flow. Second operand 5 states and 198 transitions. [2024-01-30 14:19:06,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 270 transitions, 4723 flow [2024-01-30 14:19:06,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 270 transitions, 4589 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:19:06,767 INFO L231 Difference]: Finished difference. Result has 154 places, 245 transitions, 4191 flow [2024-01-30 14:19:06,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3949, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4191, PETRI_PLACES=154, PETRI_TRANSITIONS=245} [2024-01-30 14:19:06,767 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 82 predicate places. [2024-01-30 14:19:06,768 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 245 transitions, 4191 flow [2024-01-30 14:19:06,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:06,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:06,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:06,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-01-30 14:19:06,768 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:06,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:06,768 INFO L85 PathProgramCache]: Analyzing trace with hash -259790692, now seen corresponding path program 1 times [2024-01-30 14:19:06,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:06,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607248580] [2024-01-30 14:19:06,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:06,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:06,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:06,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607248580] [2024-01-30 14:19:06,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607248580] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:06,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:06,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:19:06,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037757715] [2024-01-30 14:19:06,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:06,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:06,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:06,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:06,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:06,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:06,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 245 transitions, 4191 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:06,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:06,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:06,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:07,659 INFO L124 PetriNetUnfolderBase]: 2372/4299 cut-off events. [2024-01-30 14:19:07,659 INFO L125 PetriNetUnfolderBase]: For 51167/51361 co-relation queries the response was YES. [2024-01-30 14:19:07,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23377 conditions, 4299 events. 2372/4299 cut-off events. For 51167/51361 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 28296 event pairs, 564 based on Foata normal form. 82/4167 useless extension candidates. Maximal degree in co-relation 23306. Up to 1869 conditions per place. [2024-01-30 14:19:07,696 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 254 selfloop transitions, 81 changer transitions 0/354 dead transitions. [2024-01-30 14:19:07,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 354 transitions, 5812 flow [2024-01-30 14:19:07,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:07,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 250 transitions. [2024-01-30 14:19:07,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252100840336135 [2024-01-30 14:19:07,698 INFO L175 Difference]: Start difference. First operand has 154 places, 245 transitions, 4191 flow. Second operand 7 states and 250 transitions. [2024-01-30 14:19:07,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 354 transitions, 5812 flow [2024-01-30 14:19:07,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 354 transitions, 5345 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-30 14:19:07,825 INFO L231 Difference]: Finished difference. Result has 157 places, 269 transitions, 4238 flow [2024-01-30 14:19:07,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3759, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4238, PETRI_PLACES=157, PETRI_TRANSITIONS=269} [2024-01-30 14:19:07,825 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 85 predicate places. [2024-01-30 14:19:07,825 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 269 transitions, 4238 flow [2024-01-30 14:19:07,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:07,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:07,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:07,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-01-30 14:19:07,826 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:07,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:07,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1112962458, now seen corresponding path program 2 times [2024-01-30 14:19:07,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:07,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989414938] [2024-01-30 14:19:07,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:07,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:07,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:07,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:07,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989414938] [2024-01-30 14:19:07,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989414938] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:07,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:07,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:19:07,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881190582] [2024-01-30 14:19:07,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:07,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:07,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:07,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:07,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:07,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:07,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 269 transitions, 4238 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:07,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:07,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:07,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:08,723 INFO L124 PetriNetUnfolderBase]: 2362/4285 cut-off events. [2024-01-30 14:19:08,723 INFO L125 PetriNetUnfolderBase]: For 48651/48853 co-relation queries the response was YES. [2024-01-30 14:19:08,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24267 conditions, 4285 events. 2362/4285 cut-off events. For 48651/48853 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 28216 event pairs, 591 based on Foata normal form. 82/4153 useless extension candidates. Maximal degree in co-relation 24193. Up to 1867 conditions per place. [2024-01-30 14:19:08,762 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 253 selfloop transitions, 81 changer transitions 0/353 dead transitions. [2024-01-30 14:19:08,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 353 transitions, 5630 flow [2024-01-30 14:19:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:08,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:08,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-01-30 14:19:08,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189075630252101 [2024-01-30 14:19:08,763 INFO L175 Difference]: Start difference. First operand has 157 places, 269 transitions, 4238 flow. Second operand 7 states and 247 transitions. [2024-01-30 14:19:08,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 353 transitions, 5630 flow [2024-01-30 14:19:08,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 353 transitions, 5580 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-30 14:19:08,903 INFO L231 Difference]: Finished difference. Result has 163 places, 274 transitions, 4452 flow [2024-01-30 14:19:08,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4189, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4452, PETRI_PLACES=163, PETRI_TRANSITIONS=274} [2024-01-30 14:19:08,903 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 91 predicate places. [2024-01-30 14:19:08,903 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 274 transitions, 4452 flow [2024-01-30 14:19:08,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:08,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:08,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:08,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-01-30 14:19:08,904 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:08,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash 23330454, now seen corresponding path program 3 times [2024-01-30 14:19:08,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:08,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039336134] [2024-01-30 14:19:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:08,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:09,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:09,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039336134] [2024-01-30 14:19:09,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039336134] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:09,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:09,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:19:09,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148019123] [2024-01-30 14:19:09,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:09,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:09,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:09,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:09,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:09,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:09,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 274 transitions, 4452 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:09,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:09,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:09,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:09,841 INFO L124 PetriNetUnfolderBase]: 2510/4579 cut-off events. [2024-01-30 14:19:09,841 INFO L125 PetriNetUnfolderBase]: For 57330/57541 co-relation queries the response was YES. [2024-01-30 14:19:09,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26786 conditions, 4579 events. 2510/4579 cut-off events. For 57330/57541 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 30755 event pairs, 729 based on Foata normal form. 82/4453 useless extension candidates. Maximal degree in co-relation 26710. Up to 1875 conditions per place. [2024-01-30 14:19:09,881 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 267 selfloop transitions, 93 changer transitions 0/379 dead transitions. [2024-01-30 14:19:09,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 379 transitions, 6248 flow [2024-01-30 14:19:09,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-01-30 14:19:09,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189075630252101 [2024-01-30 14:19:09,884 INFO L175 Difference]: Start difference. First operand has 163 places, 274 transitions, 4452 flow. Second operand 7 states and 247 transitions. [2024-01-30 14:19:09,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 379 transitions, 6248 flow [2024-01-30 14:19:10,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 379 transitions, 6006 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-01-30 14:19:10,042 INFO L231 Difference]: Finished difference. Result has 168 places, 303 transitions, 4933 flow [2024-01-30 14:19:10,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4270, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4933, PETRI_PLACES=168, PETRI_TRANSITIONS=303} [2024-01-30 14:19:10,043 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 96 predicate places. [2024-01-30 14:19:10,043 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 303 transitions, 4933 flow [2024-01-30 14:19:10,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:10,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:10,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:10,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-01-30 14:19:10,043 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:10,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:10,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1129689369, now seen corresponding path program 1 times [2024-01-30 14:19:10,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:10,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408837083] [2024-01-30 14:19:10,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:10,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:10,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:10,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408837083] [2024-01-30 14:19:10,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408837083] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:10,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:10,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:10,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182112957] [2024-01-30 14:19:10,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:10,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:10,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:10,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:10,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:10,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:10,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 303 transitions, 4933 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:10,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:10,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:10,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:11,021 INFO L124 PetriNetUnfolderBase]: 2662/4752 cut-off events. [2024-01-30 14:19:11,022 INFO L125 PetriNetUnfolderBase]: For 66353/66747 co-relation queries the response was YES. [2024-01-30 14:19:11,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29266 conditions, 4752 events. 2662/4752 cut-off events. For 66353/66747 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 31096 event pairs, 644 based on Foata normal form. 103/4603 useless extension candidates. Maximal degree in co-relation 29186. Up to 2714 conditions per place. [2024-01-30 14:19:11,057 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 192 selfloop transitions, 118 changer transitions 0/346 dead transitions. [2024-01-30 14:19:11,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 346 transitions, 5893 flow [2024-01-30 14:19:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:11,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-01-30 14:19:11,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-01-30 14:19:11,058 INFO L175 Difference]: Start difference. First operand has 168 places, 303 transitions, 4933 flow. Second operand 6 states and 187 transitions. [2024-01-30 14:19:11,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 346 transitions, 5893 flow [2024-01-30 14:19:11,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 346 transitions, 5818 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:19:11,221 INFO L231 Difference]: Finished difference. Result has 172 places, 303 transitions, 5132 flow [2024-01-30 14:19:11,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4878, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5132, PETRI_PLACES=172, PETRI_TRANSITIONS=303} [2024-01-30 14:19:11,222 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 100 predicate places. [2024-01-30 14:19:11,222 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 303 transitions, 5132 flow [2024-01-30 14:19:11,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:11,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:11,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:11,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-01-30 14:19:11,222 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:11,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:11,223 INFO L85 PathProgramCache]: Analyzing trace with hash 349647937, now seen corresponding path program 2 times [2024-01-30 14:19:11,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:11,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466261024] [2024-01-30 14:19:11,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:11,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:11,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:11,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466261024] [2024-01-30 14:19:11,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466261024] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:11,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:11,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:11,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622896896] [2024-01-30 14:19:11,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:11,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:11,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:11,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:11,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:11,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:11,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 303 transitions, 5132 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:11,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:11,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:11,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:12,221 INFO L124 PetriNetUnfolderBase]: 2586/4652 cut-off events. [2024-01-30 14:19:12,222 INFO L125 PetriNetUnfolderBase]: For 69463/69833 co-relation queries the response was YES. [2024-01-30 14:19:12,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28609 conditions, 4652 events. 2586/4652 cut-off events. For 69463/69833 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 30494 event pairs, 632 based on Foata normal form. 97/4512 useless extension candidates. Maximal degree in co-relation 28528. Up to 2686 conditions per place. [2024-01-30 14:19:12,268 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 194 selfloop transitions, 114 changer transitions 0/344 dead transitions. [2024-01-30 14:19:12,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 344 transitions, 6057 flow [2024-01-30 14:19:12,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-01-30 14:19:12,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-01-30 14:19:12,270 INFO L175 Difference]: Start difference. First operand has 172 places, 303 transitions, 5132 flow. Second operand 6 states and 184 transitions. [2024-01-30 14:19:12,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 344 transitions, 6057 flow [2024-01-30 14:19:12,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 344 transitions, 5821 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-30 14:19:12,478 INFO L231 Difference]: Finished difference. Result has 173 places, 303 transitions, 5142 flow [2024-01-30 14:19:12,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5142, PETRI_PLACES=173, PETRI_TRANSITIONS=303} [2024-01-30 14:19:12,478 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 101 predicate places. [2024-01-30 14:19:12,478 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 303 transitions, 5142 flow [2024-01-30 14:19:12,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:12,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:12,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:12,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-01-30 14:19:12,479 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:12,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:12,479 INFO L85 PathProgramCache]: Analyzing trace with hash 289961193, now seen corresponding path program 1 times [2024-01-30 14:19:12,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:12,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638935332] [2024-01-30 14:19:12,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:12,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:12,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:12,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638935332] [2024-01-30 14:19:12,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638935332] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:12,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:12,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:12,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436600858] [2024-01-30 14:19:12,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:12,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:12,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:12,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:12,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:12,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:12,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 303 transitions, 5142 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:12,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:12,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:12,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:13,344 INFO L124 PetriNetUnfolderBase]: 2329/4263 cut-off events. [2024-01-30 14:19:13,345 INFO L125 PetriNetUnfolderBase]: For 62150/62358 co-relation queries the response was YES. [2024-01-30 14:19:13,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26282 conditions, 4263 events. 2329/4263 cut-off events. For 62150/62358 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 28403 event pairs, 591 based on Foata normal form. 78/4142 useless extension candidates. Maximal degree in co-relation 26200. Up to 2476 conditions per place. [2024-01-30 14:19:13,384 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 205 selfloop transitions, 116 changer transitions 0/340 dead transitions. [2024-01-30 14:19:13,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 340 transitions, 6078 flow [2024-01-30 14:19:13,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:13,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-01-30 14:19:13,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2024-01-30 14:19:13,385 INFO L175 Difference]: Start difference. First operand has 173 places, 303 transitions, 5142 flow. Second operand 6 states and 180 transitions. [2024-01-30 14:19:13,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 340 transitions, 6078 flow [2024-01-30 14:19:13,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 340 transitions, 5925 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:19:13,565 INFO L231 Difference]: Finished difference. Result has 175 places, 303 transitions, 5239 flow [2024-01-30 14:19:13,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4989, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5239, PETRI_PLACES=175, PETRI_TRANSITIONS=303} [2024-01-30 14:19:13,566 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 103 predicate places. [2024-01-30 14:19:13,566 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 303 transitions, 5239 flow [2024-01-30 14:19:13,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:13,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:13,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:13,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-01-30 14:19:13,567 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:13,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:13,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1699849873, now seen corresponding path program 2 times [2024-01-30 14:19:13,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:13,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45969408] [2024-01-30 14:19:13,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:13,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:13,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:13,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:13,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45969408] [2024-01-30 14:19:13,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45969408] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:13,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:13,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:13,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039424325] [2024-01-30 14:19:13,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:13,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:13,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:13,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:13,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:13,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:13,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 303 transitions, 5239 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:13,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:13,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:13,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:14,403 INFO L124 PetriNetUnfolderBase]: 2309/4231 cut-off events. [2024-01-30 14:19:14,403 INFO L125 PetriNetUnfolderBase]: For 65357/65559 co-relation queries the response was YES. [2024-01-30 14:19:14,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26192 conditions, 4231 events. 2309/4231 cut-off events. For 65357/65559 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 28146 event pairs, 593 based on Foata normal form. 78/4110 useless extension candidates. Maximal degree in co-relation 26109. Up to 2470 conditions per place. [2024-01-30 14:19:14,444 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 197 selfloop transitions, 120 changer transitions 0/336 dead transitions. [2024-01-30 14:19:14,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 336 transitions, 6114 flow [2024-01-30 14:19:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-01-30 14:19:14,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4338235294117647 [2024-01-30 14:19:14,445 INFO L175 Difference]: Start difference. First operand has 175 places, 303 transitions, 5239 flow. Second operand 6 states and 177 transitions. [2024-01-30 14:19:14,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 336 transitions, 6114 flow [2024-01-30 14:19:14,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 336 transitions, 5959 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:19:14,646 INFO L231 Difference]: Finished difference. Result has 177 places, 303 transitions, 5342 flow [2024-01-30 14:19:14,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5084, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5342, PETRI_PLACES=177, PETRI_TRANSITIONS=303} [2024-01-30 14:19:14,646 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 105 predicate places. [2024-01-30 14:19:14,646 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 303 transitions, 5342 flow [2024-01-30 14:19:14,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:14,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:14,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:14,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-01-30 14:19:14,647 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:14,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:14,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1204402148, now seen corresponding path program 4 times [2024-01-30 14:19:14,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:14,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082770586] [2024-01-30 14:19:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:14,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:14,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:14,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082770586] [2024-01-30 14:19:14,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082770586] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:14,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:14,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:19:14,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429237279] [2024-01-30 14:19:14,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:14,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:14,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:14,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:14,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:14,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:14,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 303 transitions, 5342 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:14,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:14,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:14,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:15,609 INFO L124 PetriNetUnfolderBase]: 2333/4270 cut-off events. [2024-01-30 14:19:15,609 INFO L125 PetriNetUnfolderBase]: For 71461/71676 co-relation queries the response was YES. [2024-01-30 14:19:15,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26536 conditions, 4270 events. 2333/4270 cut-off events. For 71461/71676 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 28524 event pairs, 620 based on Foata normal form. 99/4178 useless extension candidates. Maximal degree in co-relation 26452. Up to 1731 conditions per place. [2024-01-30 14:19:15,654 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 280 selfloop transitions, 85 changer transitions 0/384 dead transitions. [2024-01-30 14:19:15,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 384 transitions, 6952 flow [2024-01-30 14:19:15,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:15,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-01-30 14:19:15,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831932773109244 [2024-01-30 14:19:15,655 INFO L175 Difference]: Start difference. First operand has 177 places, 303 transitions, 5342 flow. Second operand 7 states and 230 transitions. [2024-01-30 14:19:15,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 384 transitions, 6952 flow [2024-01-30 14:19:15,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 384 transitions, 6690 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-30 14:19:15,871 INFO L231 Difference]: Finished difference. Result has 181 places, 321 transitions, 5559 flow [2024-01-30 14:19:15,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5102, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5559, PETRI_PLACES=181, PETRI_TRANSITIONS=321} [2024-01-30 14:19:15,871 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 109 predicate places. [2024-01-30 14:19:15,871 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 321 transitions, 5559 flow [2024-01-30 14:19:15,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:15,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:15,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:15,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-01-30 14:19:15,872 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:15,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash -324021776, now seen corresponding path program 1 times [2024-01-30 14:19:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:15,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843429478] [2024-01-30 14:19:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:15,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:16,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:16,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843429478] [2024-01-30 14:19:16,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843429478] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:16,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:16,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:19:16,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031795657] [2024-01-30 14:19:16,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:16,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:16,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:16,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:16,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:16,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:16,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 321 transitions, 5559 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:16,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:16,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:16,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:16,997 INFO L124 PetriNetUnfolderBase]: 2585/4650 cut-off events. [2024-01-30 14:19:16,997 INFO L125 PetriNetUnfolderBase]: For 82842/83176 co-relation queries the response was YES. [2024-01-30 14:19:17,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29849 conditions, 4650 events. 2585/4650 cut-off events. For 82842/83176 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 30412 event pairs, 612 based on Foata normal form. 78/4488 useless extension candidates. Maximal degree in co-relation 29762. Up to 1982 conditions per place. [2024-01-30 14:19:17,034 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 286 selfloop transitions, 91 changer transitions 0/414 dead transitions. [2024-01-30 14:19:17,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 414 transitions, 7296 flow [2024-01-30 14:19:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-01-30 14:19:17,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852941176470588 [2024-01-30 14:19:17,035 INFO L175 Difference]: Start difference. First operand has 181 places, 321 transitions, 5559 flow. Second operand 7 states and 231 transitions. [2024-01-30 14:19:17,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 414 transitions, 7296 flow [2024-01-30 14:19:17,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 414 transitions, 7252 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:19:17,273 INFO L231 Difference]: Finished difference. Result has 189 places, 339 transitions, 5996 flow [2024-01-30 14:19:17,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5525, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5996, PETRI_PLACES=189, PETRI_TRANSITIONS=339} [2024-01-30 14:19:17,274 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 117 predicate places. [2024-01-30 14:19:17,274 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 339 transitions, 5996 flow [2024-01-30 14:19:17,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:17,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:17,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:17,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-01-30 14:19:17,274 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:17,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1631179328, now seen corresponding path program 2 times [2024-01-30 14:19:17,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:17,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277615066] [2024-01-30 14:19:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:17,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:17,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:17,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277615066] [2024-01-30 14:19:17,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277615066] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:17,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:17,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:19:17,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672239339] [2024-01-30 14:19:17,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:17,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:17,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:17,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:17,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:17,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:17,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 339 transitions, 5996 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:17,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:17,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:17,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:18,337 INFO L124 PetriNetUnfolderBase]: 2775/4981 cut-off events. [2024-01-30 14:19:18,337 INFO L125 PetriNetUnfolderBase]: For 96736/97109 co-relation queries the response was YES. [2024-01-30 14:19:18,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32606 conditions, 4981 events. 2775/4981 cut-off events. For 96736/97109 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 33101 event pairs, 830 based on Foata normal form. 75/4827 useless extension candidates. Maximal degree in co-relation 32515. Up to 2027 conditions per place. [2024-01-30 14:19:18,389 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 273 selfloop transitions, 126 changer transitions 0/436 dead transitions. [2024-01-30 14:19:18,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 436 transitions, 7899 flow [2024-01-30 14:19:18,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:18,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:18,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-01-30 14:19:18,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-01-30 14:19:18,390 INFO L175 Difference]: Start difference. First operand has 189 places, 339 transitions, 5996 flow. Second operand 7 states and 238 transitions. [2024-01-30 14:19:18,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 436 transitions, 7899 flow [2024-01-30 14:19:18,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 436 transitions, 7839 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-30 14:19:18,673 INFO L231 Difference]: Finished difference. Result has 198 places, 369 transitions, 6699 flow [2024-01-30 14:19:18,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5948, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6699, PETRI_PLACES=198, PETRI_TRANSITIONS=369} [2024-01-30 14:19:18,674 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 126 predicate places. [2024-01-30 14:19:18,674 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 369 transitions, 6699 flow [2024-01-30 14:19:18,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:18,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:18,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:18,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-01-30 14:19:18,674 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:18,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:18,675 INFO L85 PathProgramCache]: Analyzing trace with hash -131945686, now seen corresponding path program 3 times [2024-01-30 14:19:18,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:18,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947028679] [2024-01-30 14:19:18,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:18,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:18,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:18,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947028679] [2024-01-30 14:19:18,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947028679] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:18,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:18,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:19:18,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552516795] [2024-01-30 14:19:18,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:18,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:18,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:18,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:18,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 369 transitions, 6699 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:18,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:18,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:18,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:19,937 INFO L124 PetriNetUnfolderBase]: 2880/5172 cut-off events. [2024-01-30 14:19:19,938 INFO L125 PetriNetUnfolderBase]: For 107920/108309 co-relation queries the response was YES. [2024-01-30 14:19:19,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35595 conditions, 5172 events. 2880/5172 cut-off events. For 107920/108309 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 34671 event pairs, 807 based on Foata normal form. 67/5001 useless extension candidates. Maximal degree in co-relation 35499. Up to 2067 conditions per place. [2024-01-30 14:19:19,993 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 266 selfloop transitions, 151 changer transitions 0/454 dead transitions. [2024-01-30 14:19:19,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 454 transitions, 8507 flow [2024-01-30 14:19:19,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2024-01-30 14:19:19,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49159663865546216 [2024-01-30 14:19:19,995 INFO L175 Difference]: Start difference. First operand has 198 places, 369 transitions, 6699 flow. Second operand 7 states and 234 transitions. [2024-01-30 14:19:19,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 454 transitions, 8507 flow [2024-01-30 14:19:20,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 454 transitions, 8445 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-30 14:19:20,315 INFO L231 Difference]: Finished difference. Result has 206 places, 395 transitions, 7363 flow [2024-01-30 14:19:20,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6645, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7363, PETRI_PLACES=206, PETRI_TRANSITIONS=395} [2024-01-30 14:19:20,315 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 134 predicate places. [2024-01-30 14:19:20,315 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 395 transitions, 7363 flow [2024-01-30 14:19:20,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:20,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:20,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:20,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-01-30 14:19:20,316 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:20,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash -130871536, now seen corresponding path program 4 times [2024-01-30 14:19:20,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:20,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368180002] [2024-01-30 14:19:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:20,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:20,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:20,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368180002] [2024-01-30 14:19:20,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368180002] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:20,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:20,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:19:20,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327126619] [2024-01-30 14:19:20,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:20,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:20,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:20,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:20,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:20,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:20,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 395 transitions, 7363 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:20,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:20,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:20,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:21,529 INFO L124 PetriNetUnfolderBase]: 2899/5209 cut-off events. [2024-01-30 14:19:21,529 INFO L125 PetriNetUnfolderBase]: For 120866/121270 co-relation queries the response was YES. [2024-01-30 14:19:21,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37514 conditions, 5209 events. 2899/5209 cut-off events. For 120866/121270 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 34956 event pairs, 864 based on Foata normal form. 75/5049 useless extension candidates. Maximal degree in co-relation 37414. Up to 2090 conditions per place. [2024-01-30 14:19:21,585 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 266 selfloop transitions, 153 changer transitions 0/456 dead transitions. [2024-01-30 14:19:21,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 456 transitions, 8907 flow [2024-01-30 14:19:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2024-01-30 14:19:21,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48739495798319327 [2024-01-30 14:19:21,586 INFO L175 Difference]: Start difference. First operand has 206 places, 395 transitions, 7363 flow. Second operand 7 states and 232 transitions. [2024-01-30 14:19:21,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 456 transitions, 8907 flow [2024-01-30 14:19:22,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 456 transitions, 8718 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-30 14:19:22,010 INFO L231 Difference]: Finished difference. Result has 211 places, 402 transitions, 7645 flow [2024-01-30 14:19:22,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7176, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7645, PETRI_PLACES=211, PETRI_TRANSITIONS=402} [2024-01-30 14:19:22,011 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 139 predicate places. [2024-01-30 14:19:22,011 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 402 transitions, 7645 flow [2024-01-30 14:19:22,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-01-30 14:19:22,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:22,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:22,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-01-30 14:19:22,012 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:22,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1739046161, now seen corresponding path program 1 times [2024-01-30 14:19:22,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:22,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369974191] [2024-01-30 14:19:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:22,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:22,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:22,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369974191] [2024-01-30 14:19:22,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369974191] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:22,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:22,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:19:22,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615691214] [2024-01-30 14:19:22,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:22,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:19:22,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:22,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:19:22,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:19:22,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:22,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 402 transitions, 7645 flow. Second operand has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:22,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:22,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:22,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:23,210 INFO L124 PetriNetUnfolderBase]: 2524/4873 cut-off events. [2024-01-30 14:19:23,211 INFO L125 PetriNetUnfolderBase]: For 119518/120175 co-relation queries the response was YES. [2024-01-30 14:19:23,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35537 conditions, 4873 events. 2524/4873 cut-off events. For 119518/120175 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 35945 event pairs, 578 based on Foata normal form. 71/4682 useless extension candidates. Maximal degree in co-relation 35435. Up to 1854 conditions per place. [2024-01-30 14:19:23,269 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 281 selfloop transitions, 134 changer transitions 1/487 dead transitions. [2024-01-30 14:19:23,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 487 transitions, 9327 flow [2024-01-30 14:19:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:23,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 316 transitions. [2024-01-30 14:19:23,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6638655462184874 [2024-01-30 14:19:23,270 INFO L175 Difference]: Start difference. First operand has 211 places, 402 transitions, 7645 flow. Second operand 7 states and 316 transitions. [2024-01-30 14:19:23,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 487 transitions, 9327 flow [2024-01-30 14:19:23,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 487 transitions, 9053 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-01-30 14:19:23,631 INFO L231 Difference]: Finished difference. Result has 218 places, 410 transitions, 8005 flow [2024-01-30 14:19:23,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7371, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8005, PETRI_PLACES=218, PETRI_TRANSITIONS=410} [2024-01-30 14:19:23,632 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 146 predicate places. [2024-01-30 14:19:23,632 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 410 transitions, 8005 flow [2024-01-30 14:19:23,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:23,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:23,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:23,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-01-30 14:19:23,632 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:23,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:23,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1764092347, now seen corresponding path program 1 times [2024-01-30 14:19:23,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:23,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424899877] [2024-01-30 14:19:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:23,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:23,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:23,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424899877] [2024-01-30 14:19:23,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424899877] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:23,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:23,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:19:23,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687421563] [2024-01-30 14:19:23,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:23,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:19:23,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:23,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:19:23,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:19:23,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:23,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 410 transitions, 8005 flow. Second operand has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:23,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:23,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:23,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:25,021 INFO L124 PetriNetUnfolderBase]: 2639/5091 cut-off events. [2024-01-30 14:19:25,021 INFO L125 PetriNetUnfolderBase]: For 136281/137140 co-relation queries the response was YES. [2024-01-30 14:19:25,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37925 conditions, 5091 events. 2639/5091 cut-off events. For 136281/137140 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 38294 event pairs, 738 based on Foata normal form. 153/5036 useless extension candidates. Maximal degree in co-relation 37818. Up to 2020 conditions per place. [2024-01-30 14:19:25,076 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 280 selfloop transitions, 156 changer transitions 0/507 dead transitions. [2024-01-30 14:19:25,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 507 transitions, 10228 flow [2024-01-30 14:19:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:25,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2024-01-30 14:19:25,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6386554621848739 [2024-01-30 14:19:25,077 INFO L175 Difference]: Start difference. First operand has 218 places, 410 transitions, 8005 flow. Second operand 7 states and 304 transitions. [2024-01-30 14:19:25,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 507 transitions, 10228 flow [2024-01-30 14:19:25,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 507 transitions, 10175 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-01-30 14:19:25,454 INFO L231 Difference]: Finished difference. Result has 227 places, 441 transitions, 9072 flow [2024-01-30 14:19:25,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7967, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9072, PETRI_PLACES=227, PETRI_TRANSITIONS=441} [2024-01-30 14:19:25,455 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 155 predicate places. [2024-01-30 14:19:25,455 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 441 transitions, 9072 flow [2024-01-30 14:19:25,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:25,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:25,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:25,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-01-30 14:19:25,455 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:25,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:25,455 INFO L85 PathProgramCache]: Analyzing trace with hash -516077287, now seen corresponding path program 1 times [2024-01-30 14:19:25,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:25,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722895897] [2024-01-30 14:19:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:25,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:25,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:25,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722895897] [2024-01-30 14:19:25,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722895897] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:25,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:25,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:19:25,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386429728] [2024-01-30 14:19:25,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:25,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:19:25,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:25,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:19:25,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:19:25,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:25,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 441 transitions, 9072 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:25,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:25,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:25,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:27,219 INFO L124 PetriNetUnfolderBase]: 3540/6541 cut-off events. [2024-01-30 14:19:27,219 INFO L125 PetriNetUnfolderBase]: For 168881/169616 co-relation queries the response was YES. [2024-01-30 14:19:27,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48484 conditions, 6541 events. 3540/6541 cut-off events. For 168881/169616 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 47310 event pairs, 963 based on Foata normal form. 105/6492 useless extension candidates. Maximal degree in co-relation 48372. Up to 2818 conditions per place. [2024-01-30 14:19:27,280 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 326 selfloop transitions, 179 changer transitions 1/543 dead transitions. [2024-01-30 14:19:27,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 543 transitions, 11128 flow [2024-01-30 14:19:27,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 269 transitions. [2024-01-30 14:19:27,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5651260504201681 [2024-01-30 14:19:27,286 INFO L175 Difference]: Start difference. First operand has 227 places, 441 transitions, 9072 flow. Second operand 7 states and 269 transitions. [2024-01-30 14:19:27,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 543 transitions, 11128 flow [2024-01-30 14:19:27,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 543 transitions, 11094 flow, removed 17 selfloop flow, removed 0 redundant places. [2024-01-30 14:19:27,831 INFO L231 Difference]: Finished difference. Result has 236 places, 457 transitions, 9775 flow [2024-01-30 14:19:27,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9038, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9775, PETRI_PLACES=236, PETRI_TRANSITIONS=457} [2024-01-30 14:19:27,832 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 164 predicate places. [2024-01-30 14:19:27,832 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 457 transitions, 9775 flow [2024-01-30 14:19:27,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:27,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:27,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:27,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-01-30 14:19:27,833 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:27,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:27,833 INFO L85 PathProgramCache]: Analyzing trace with hash 757479141, now seen corresponding path program 2 times [2024-01-30 14:19:27,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:27,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990043317] [2024-01-30 14:19:27,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:27,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:28,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:28,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990043317] [2024-01-30 14:19:28,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990043317] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:28,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:28,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:19:28,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367609759] [2024-01-30 14:19:28,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:28,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:19:28,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:28,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:19:28,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:19:28,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:28,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 457 transitions, 9775 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:28,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:28,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:28,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:29,580 INFO L124 PetriNetUnfolderBase]: 3522/6523 cut-off events. [2024-01-30 14:19:29,580 INFO L125 PetriNetUnfolderBase]: For 183856/184571 co-relation queries the response was YES. [2024-01-30 14:19:29,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50740 conditions, 6523 events. 3522/6523 cut-off events. For 183856/184571 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 47183 event pairs, 1015 based on Foata normal form. 105/6474 useless extension candidates. Maximal degree in co-relation 50623. Up to 2818 conditions per place. [2024-01-30 14:19:29,670 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 323 selfloop transitions, 176 changer transitions 2/538 dead transitions. [2024-01-30 14:19:29,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 538 transitions, 11560 flow [2024-01-30 14:19:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 265 transitions. [2024-01-30 14:19:29,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5567226890756303 [2024-01-30 14:19:29,671 INFO L175 Difference]: Start difference. First operand has 236 places, 457 transitions, 9775 flow. Second operand 7 states and 265 transitions. [2024-01-30 14:19:29,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 538 transitions, 11560 flow [2024-01-30 14:19:30,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 538 transitions, 11326 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-01-30 14:19:30,431 INFO L231 Difference]: Finished difference. Result has 239 places, 461 transitions, 10076 flow [2024-01-30 14:19:30,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9551, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10076, PETRI_PLACES=239, PETRI_TRANSITIONS=461} [2024-01-30 14:19:30,431 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 167 predicate places. [2024-01-30 14:19:30,432 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 461 transitions, 10076 flow [2024-01-30 14:19:30,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:30,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:30,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:30,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-01-30 14:19:30,432 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:30,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:30,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1863492209, now seen corresponding path program 1 times [2024-01-30 14:19:30,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:30,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990500750] [2024-01-30 14:19:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:30,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:30,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:30,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990500750] [2024-01-30 14:19:30,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990500750] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:30,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:30,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:30,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498155190] [2024-01-30 14:19:30,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:30,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:19:30,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:30,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:19:30,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:19:30,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:30,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 461 transitions, 10076 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:30,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:30,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:30,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:31,818 INFO L124 PetriNetUnfolderBase]: 2792/5449 cut-off events. [2024-01-30 14:19:31,818 INFO L125 PetriNetUnfolderBase]: For 178329/179547 co-relation queries the response was YES. [2024-01-30 14:19:31,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44313 conditions, 5449 events. 2792/5449 cut-off events. For 178329/179547 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 41782 event pairs, 963 based on Foata normal form. 135/5417 useless extension candidates. Maximal degree in co-relation 44196. Up to 2686 conditions per place. [2024-01-30 14:19:31,890 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 307 selfloop transitions, 122 changer transitions 0/504 dead transitions. [2024-01-30 14:19:31,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 504 transitions, 11570 flow [2024-01-30 14:19:31,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:31,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:31,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 235 transitions. [2024-01-30 14:19:31,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5759803921568627 [2024-01-30 14:19:31,891 INFO L175 Difference]: Start difference. First operand has 239 places, 461 transitions, 10076 flow. Second operand 6 states and 235 transitions. [2024-01-30 14:19:31,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 504 transitions, 11570 flow [2024-01-30 14:19:32,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 504 transitions, 11219 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-01-30 14:19:32,476 INFO L231 Difference]: Finished difference. Result has 240 places, 468 transitions, 10181 flow [2024-01-30 14:19:32,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9737, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10181, PETRI_PLACES=240, PETRI_TRANSITIONS=468} [2024-01-30 14:19:32,477 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 168 predicate places. [2024-01-30 14:19:32,477 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 468 transitions, 10181 flow [2024-01-30 14:19:32,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:32,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:32,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:32,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-01-30 14:19:32,478 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:32,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:32,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1792715427, now seen corresponding path program 2 times [2024-01-30 14:19:32,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:32,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534971278] [2024-01-30 14:19:32,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:32,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:32,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:32,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534971278] [2024-01-30 14:19:32,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534971278] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:32,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:32,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:32,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443664475] [2024-01-30 14:19:32,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:32,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:19:32,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:32,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:19:32,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:19:32,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:32,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 468 transitions, 10181 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:32,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:32,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:32,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:34,049 INFO L124 PetriNetUnfolderBase]: 2800/5459 cut-off events. [2024-01-30 14:19:34,049 INFO L125 PetriNetUnfolderBase]: For 174684/175929 co-relation queries the response was YES. [2024-01-30 14:19:34,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44333 conditions, 5459 events. 2800/5459 cut-off events. For 174684/175929 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 41920 event pairs, 969 based on Foata normal form. 139/5431 useless extension candidates. Maximal degree in co-relation 44216. Up to 2694 conditions per place. [2024-01-30 14:19:34,136 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 305 selfloop transitions, 140 changer transitions 0/520 dead transitions. [2024-01-30 14:19:34,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 520 transitions, 11846 flow [2024-01-30 14:19:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:34,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2024-01-30 14:19:34,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5955882352941176 [2024-01-30 14:19:34,137 INFO L175 Difference]: Start difference. First operand has 240 places, 468 transitions, 10181 flow. Second operand 6 states and 243 transitions. [2024-01-30 14:19:34,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 520 transitions, 11846 flow [2024-01-30 14:19:34,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 520 transitions, 11687 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-01-30 14:19:34,708 INFO L231 Difference]: Finished difference. Result has 245 places, 479 transitions, 10591 flow [2024-01-30 14:19:34,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10030, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10591, PETRI_PLACES=245, PETRI_TRANSITIONS=479} [2024-01-30 14:19:34,709 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 173 predicate places. [2024-01-30 14:19:34,709 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 479 transitions, 10591 flow [2024-01-30 14:19:34,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:34,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:34,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:34,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-01-30 14:19:34,710 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:34,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:34,710 INFO L85 PathProgramCache]: Analyzing trace with hash 431172027, now seen corresponding path program 3 times [2024-01-30 14:19:34,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:34,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898577308] [2024-01-30 14:19:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:34,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:34,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:34,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898577308] [2024-01-30 14:19:34,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898577308] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:34,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:34,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:19:34,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760631933] [2024-01-30 14:19:34,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:34,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:19:34,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:34,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:19:34,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:19:34,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:34,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 479 transitions, 10591 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:34,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:34,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:34,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:36,802 INFO L124 PetriNetUnfolderBase]: 3886/7323 cut-off events. [2024-01-30 14:19:36,802 INFO L125 PetriNetUnfolderBase]: For 205338/206235 co-relation queries the response was YES. [2024-01-30 14:19:36,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56900 conditions, 7323 events. 3886/7323 cut-off events. For 205338/206235 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 55528 event pairs, 1335 based on Foata normal form. 105/7264 useless extension candidates. Maximal degree in co-relation 56781. Up to 2838 conditions per place. [2024-01-30 14:19:36,880 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 372 selfloop transitions, 176 changer transitions 1/586 dead transitions. [2024-01-30 14:19:36,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 586 transitions, 12929 flow [2024-01-30 14:19:36,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 267 transitions. [2024-01-30 14:19:36,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609243697478992 [2024-01-30 14:19:36,881 INFO L175 Difference]: Start difference. First operand has 245 places, 479 transitions, 10591 flow. Second operand 7 states and 267 transitions. [2024-01-30 14:19:36,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 586 transitions, 12929 flow [2024-01-30 14:19:37,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 586 transitions, 12778 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-30 14:19:37,570 INFO L231 Difference]: Finished difference. Result has 253 places, 498 transitions, 11357 flow [2024-01-30 14:19:37,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10440, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11357, PETRI_PLACES=253, PETRI_TRANSITIONS=498} [2024-01-30 14:19:37,571 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 181 predicate places. [2024-01-30 14:19:37,571 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 498 transitions, 11357 flow [2024-01-30 14:19:37,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:37,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:37,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:37,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-01-30 14:19:37,572 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:37,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:37,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1602026451, now seen corresponding path program 4 times [2024-01-30 14:19:37,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:37,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262478458] [2024-01-30 14:19:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:37,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:37,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:37,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262478458] [2024-01-30 14:19:37,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262478458] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:37,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:37,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:19:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98029653] [2024-01-30 14:19:37,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:37,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:19:37,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:37,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:19:37,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:19:37,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:37,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 498 transitions, 11357 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:37,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:37,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:37,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:39,635 INFO L124 PetriNetUnfolderBase]: 3994/7530 cut-off events. [2024-01-30 14:19:39,635 INFO L125 PetriNetUnfolderBase]: For 222314/223162 co-relation queries the response was YES. [2024-01-30 14:19:39,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59401 conditions, 7530 events. 3994/7530 cut-off events. For 222314/223162 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 57561 event pairs, 1325 based on Foata normal form. 107/7477 useless extension candidates. Maximal degree in co-relation 59278. Up to 3343 conditions per place. [2024-01-30 14:19:39,737 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 413 selfloop transitions, 130 changer transitions 1/581 dead transitions. [2024-01-30 14:19:39,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 581 transitions, 13387 flow [2024-01-30 14:19:39,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:39,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 249 transitions. [2024-01-30 14:19:39,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523109243697479 [2024-01-30 14:19:39,738 INFO L175 Difference]: Start difference. First operand has 253 places, 498 transitions, 11357 flow. Second operand 7 states and 249 transitions. [2024-01-30 14:19:39,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 581 transitions, 13387 flow [2024-01-30 14:19:40,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 581 transitions, 13232 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-01-30 14:19:40,743 INFO L231 Difference]: Finished difference. Result has 255 places, 506 transitions, 11793 flow [2024-01-30 14:19:40,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=11194, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11793, PETRI_PLACES=255, PETRI_TRANSITIONS=506} [2024-01-30 14:19:40,744 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 183 predicate places. [2024-01-30 14:19:40,745 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 506 transitions, 11793 flow [2024-01-30 14:19:40,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:40,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:40,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:40,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-01-30 14:19:40,745 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:40,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:40,746 INFO L85 PathProgramCache]: Analyzing trace with hash -9771353, now seen corresponding path program 1 times [2024-01-30 14:19:40,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:40,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582602614] [2024-01-30 14:19:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:40,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:40,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:40,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582602614] [2024-01-30 14:19:40,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582602614] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:40,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:40,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:19:40,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658604755] [2024-01-30 14:19:40,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:40,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:19:40,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:40,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:19:40,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:19:40,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:40,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 506 transitions, 11793 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:40,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:40,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:40,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:42,961 INFO L124 PetriNetUnfolderBase]: 4158/7816 cut-off events. [2024-01-30 14:19:42,961 INFO L125 PetriNetUnfolderBase]: For 248039/249027 co-relation queries the response was YES. [2024-01-30 14:19:43,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62609 conditions, 7816 events. 4158/7816 cut-off events. For 248039/249027 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 59545 event pairs, 1422 based on Foata normal form. 152/7805 useless extension candidates. Maximal degree in co-relation 62487. Up to 4162 conditions per place. [2024-01-30 14:19:43,073 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 416 selfloop transitions, 163 changer transitions 0/622 dead transitions. [2024-01-30 14:19:43,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 622 transitions, 14663 flow [2024-01-30 14:19:43,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:19:43,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:19:43,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2024-01-30 14:19:43,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091911764705882 [2024-01-30 14:19:43,075 INFO L175 Difference]: Start difference. First operand has 255 places, 506 transitions, 11793 flow. Second operand 8 states and 277 transitions. [2024-01-30 14:19:43,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 622 transitions, 14663 flow [2024-01-30 14:19:43,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 622 transitions, 14537 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-01-30 14:19:44,000 INFO L231 Difference]: Finished difference. Result has 264 places, 536 transitions, 12884 flow [2024-01-30 14:19:44,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=11693, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12884, PETRI_PLACES=264, PETRI_TRANSITIONS=536} [2024-01-30 14:19:44,001 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 192 predicate places. [2024-01-30 14:19:44,001 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 536 transitions, 12884 flow [2024-01-30 14:19:44,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:44,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:44,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:44,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-01-30 14:19:44,002 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:44,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:44,002 INFO L85 PathProgramCache]: Analyzing trace with hash -820760589, now seen corresponding path program 1 times [2024-01-30 14:19:44,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:44,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648116035] [2024-01-30 14:19:44,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:44,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:44,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:44,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:44,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648116035] [2024-01-30 14:19:44,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648116035] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:44,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:44,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:44,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583885390] [2024-01-30 14:19:44,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:44,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:19:44,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:44,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:19:44,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:19:44,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:44,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 536 transitions, 12884 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:44,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:44,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:44,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:45,665 INFO L124 PetriNetUnfolderBase]: 3330/6540 cut-off events. [2024-01-30 14:19:45,666 INFO L125 PetriNetUnfolderBase]: For 248301/249932 co-relation queries the response was YES. [2024-01-30 14:19:45,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56119 conditions, 6540 events. 3330/6540 cut-off events. For 248301/249932 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 52624 event pairs, 1502 based on Foata normal form. 173/6481 useless extension candidates. Maximal degree in co-relation 55992. Up to 3727 conditions per place. [2024-01-30 14:19:45,754 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 360 selfloop transitions, 133 changer transitions 0/571 dead transitions. [2024-01-30 14:19:45,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 571 transitions, 14467 flow [2024-01-30 14:19:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 232 transitions. [2024-01-30 14:19:45,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686274509803921 [2024-01-30 14:19:45,755 INFO L175 Difference]: Start difference. First operand has 264 places, 536 transitions, 12884 flow. Second operand 6 states and 232 transitions. [2024-01-30 14:19:45,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 571 transitions, 14467 flow [2024-01-30 14:19:46,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 571 transitions, 14441 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-01-30 14:19:46,537 INFO L231 Difference]: Finished difference. Result has 269 places, 538 transitions, 13230 flow [2024-01-30 14:19:46,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12858, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13230, PETRI_PLACES=269, PETRI_TRANSITIONS=538} [2024-01-30 14:19:46,538 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 197 predicate places. [2024-01-30 14:19:46,538 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 538 transitions, 13230 flow [2024-01-30 14:19:46,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:46,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:46,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:46,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-01-30 14:19:46,539 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:46,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:46,539 INFO L85 PathProgramCache]: Analyzing trace with hash 328775955, now seen corresponding path program 2 times [2024-01-30 14:19:46,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:46,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350743023] [2024-01-30 14:19:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:46,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:46,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:46,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350743023] [2024-01-30 14:19:46,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350743023] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:46,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:46,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:46,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387344308] [2024-01-30 14:19:46,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:46,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:19:46,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:46,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:19:46,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:19:46,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:46,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 538 transitions, 13230 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:46,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:46,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:46,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:48,351 INFO L124 PetriNetUnfolderBase]: 3326/6534 cut-off events. [2024-01-30 14:19:48,352 INFO L125 PetriNetUnfolderBase]: For 256852/258495 co-relation queries the response was YES. [2024-01-30 14:19:48,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56678 conditions, 6534 events. 3326/6534 cut-off events. For 256852/258495 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 52655 event pairs, 1496 based on Foata normal form. 177/6479 useless extension candidates. Maximal degree in co-relation 56549. Up to 3731 conditions per place. [2024-01-30 14:19:48,428 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 354 selfloop transitions, 149 changer transitions 0/581 dead transitions. [2024-01-30 14:19:48,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 581 transitions, 14968 flow [2024-01-30 14:19:48,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:48,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2024-01-30 14:19:48,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-01-30 14:19:48,429 INFO L175 Difference]: Start difference. First operand has 269 places, 538 transitions, 13230 flow. Second operand 6 states and 238 transitions. [2024-01-30 14:19:48,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 581 transitions, 14968 flow [2024-01-30 14:19:49,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 581 transitions, 14774 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-01-30 14:19:49,159 INFO L231 Difference]: Finished difference. Result has 274 places, 545 transitions, 13572 flow [2024-01-30 14:19:49,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=13042, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13572, PETRI_PLACES=274, PETRI_TRANSITIONS=545} [2024-01-30 14:19:49,160 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 202 predicate places. [2024-01-30 14:19:49,160 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 545 transitions, 13572 flow [2024-01-30 14:19:49,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:49,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:49,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:49,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-01-30 14:19:49,160 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:49,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:49,161 INFO L85 PathProgramCache]: Analyzing trace with hash 206800019, now seen corresponding path program 1 times [2024-01-30 14:19:49,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:49,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836508240] [2024-01-30 14:19:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:49,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:49,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:49,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836508240] [2024-01-30 14:19:49,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836508240] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:49,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:49,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:19:49,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469097946] [2024-01-30 14:19:49,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:49,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:19:49,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:49,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:19:49,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:19:49,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:49,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 545 transitions, 13572 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:49,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:49,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:49,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:50,966 INFO L124 PetriNetUnfolderBase]: 3359/6739 cut-off events. [2024-01-30 14:19:50,966 INFO L125 PetriNetUnfolderBase]: For 273820/275518 co-relation queries the response was YES. [2024-01-30 14:19:51,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58929 conditions, 6739 events. 3359/6739 cut-off events. For 273820/275518 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 56222 event pairs, 776 based on Foata normal form. 326/6801 useless extension candidates. Maximal degree in co-relation 58798. Up to 3103 conditions per place. [2024-01-30 14:19:51,056 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 384 selfloop transitions, 135 changer transitions 14/611 dead transitions. [2024-01-30 14:19:51,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 611 transitions, 15841 flow [2024-01-30 14:19:51,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:19:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:19:51,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-01-30 14:19:51,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6102941176470589 [2024-01-30 14:19:51,057 INFO L175 Difference]: Start difference. First operand has 274 places, 545 transitions, 13572 flow. Second operand 4 states and 166 transitions. [2024-01-30 14:19:51,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 611 transitions, 15841 flow [2024-01-30 14:19:51,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 611 transitions, 15664 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-01-30 14:19:51,977 INFO L231 Difference]: Finished difference. Result has 276 places, 552 transitions, 13956 flow [2024-01-30 14:19:51,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=13406, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=13956, PETRI_PLACES=276, PETRI_TRANSITIONS=552} [2024-01-30 14:19:51,978 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 204 predicate places. [2024-01-30 14:19:51,978 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 552 transitions, 13956 flow [2024-01-30 14:19:51,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:51,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:51,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:51,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-01-30 14:19:51,978 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:51,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:51,979 INFO L85 PathProgramCache]: Analyzing trace with hash 239868029, now seen corresponding path program 2 times [2024-01-30 14:19:51,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:51,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382060945] [2024-01-30 14:19:51,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:51,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:52,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:52,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382060945] [2024-01-30 14:19:52,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382060945] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:52,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:52,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:19:52,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389360502] [2024-01-30 14:19:52,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:52,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:19:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:52,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:19:52,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:19:52,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:52,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 552 transitions, 13956 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:52,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:52,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:52,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:53,202 INFO L124 PetriNetUnfolderBase]: 2079/4297 cut-off events. [2024-01-30 14:19:53,202 INFO L125 PetriNetUnfolderBase]: For 239856/240718 co-relation queries the response was YES. [2024-01-30 14:19:53,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43499 conditions, 4297 events. 2079/4297 cut-off events. For 239856/240718 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 33669 event pairs, 499 based on Foata normal form. 281/4362 useless extension candidates. Maximal degree in co-relation 43367. Up to 2050 conditions per place. [2024-01-30 14:19:53,264 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 333 selfloop transitions, 121 changer transitions 20/547 dead transitions. [2024-01-30 14:19:53,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 547 transitions, 14839 flow [2024-01-30 14:19:53,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:19:53,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:19:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-01-30 14:19:53,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538235294117647 [2024-01-30 14:19:53,265 INFO L175 Difference]: Start difference. First operand has 276 places, 552 transitions, 13956 flow. Second operand 5 states and 183 transitions. [2024-01-30 14:19:53,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 547 transitions, 14839 flow [2024-01-30 14:19:53,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 547 transitions, 14233 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-01-30 14:19:53,929 INFO L231 Difference]: Finished difference. Result has 271 places, 516 transitions, 13273 flow [2024-01-30 14:19:53,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12843, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=13273, PETRI_PLACES=271, PETRI_TRANSITIONS=516} [2024-01-30 14:19:53,930 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 199 predicate places. [2024-01-30 14:19:53,930 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 516 transitions, 13273 flow [2024-01-30 14:19:53,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:53,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:53,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:53,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-01-30 14:19:53,930 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:53,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:53,930 INFO L85 PathProgramCache]: Analyzing trace with hash -550508433, now seen corresponding path program 1 times [2024-01-30 14:19:53,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:53,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002430859] [2024-01-30 14:19:53,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:53,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:54,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:54,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002430859] [2024-01-30 14:19:54,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002430859] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:54,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:54,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:19:54,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869667583] [2024-01-30 14:19:54,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:54,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:54,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:54,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:54,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:54,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:54,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 516 transitions, 13273 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:54,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:54,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:54,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:55,556 INFO L124 PetriNetUnfolderBase]: 2579/5080 cut-off events. [2024-01-30 14:19:55,556 INFO L125 PetriNetUnfolderBase]: For 242166/242729 co-relation queries the response was YES. [2024-01-30 14:19:55,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49637 conditions, 5080 events. 2579/5080 cut-off events. For 242166/242729 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 37987 event pairs, 719 based on Foata normal form. 74/5045 useless extension candidates. Maximal degree in co-relation 49511. Up to 2029 conditions per place. [2024-01-30 14:19:55,625 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 340 selfloop transitions, 185 changer transitions 2/564 dead transitions. [2024-01-30 14:19:55,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 564 transitions, 14974 flow [2024-01-30 14:19:55,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:55,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-01-30 14:19:55,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-01-30 14:19:55,626 INFO L175 Difference]: Start difference. First operand has 271 places, 516 transitions, 13273 flow. Second operand 7 states and 221 transitions. [2024-01-30 14:19:55,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 564 transitions, 14974 flow [2024-01-30 14:19:56,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 564 transitions, 14655 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-30 14:19:56,391 INFO L231 Difference]: Finished difference. Result has 271 places, 516 transitions, 13338 flow [2024-01-30 14:19:56,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12958, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13338, PETRI_PLACES=271, PETRI_TRANSITIONS=516} [2024-01-30 14:19:56,392 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 199 predicate places. [2024-01-30 14:19:56,392 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 516 transitions, 13338 flow [2024-01-30 14:19:56,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:56,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:56,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:56,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-01-30 14:19:56,393 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:56,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:56,393 INFO L85 PathProgramCache]: Analyzing trace with hash 116061027, now seen corresponding path program 2 times [2024-01-30 14:19:56,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:56,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780096149] [2024-01-30 14:19:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:56,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:56,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:56,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:56,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780096149] [2024-01-30 14:19:56,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780096149] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:56,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:56,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:19:56,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376579331] [2024-01-30 14:19:56,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:56,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:56,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:56,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:56,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:56,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:56,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 516 transitions, 13338 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:56,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:56,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:56,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:57,984 INFO L124 PetriNetUnfolderBase]: 2595/5108 cut-off events. [2024-01-30 14:19:57,984 INFO L125 PetriNetUnfolderBase]: For 240301/240864 co-relation queries the response was YES. [2024-01-30 14:19:58,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50490 conditions, 5108 events. 2595/5108 cut-off events. For 240301/240864 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 38236 event pairs, 715 based on Foata normal form. 72/5071 useless extension candidates. Maximal degree in co-relation 50364. Up to 2035 conditions per place. [2024-01-30 14:19:58,051 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 342 selfloop transitions, 195 changer transitions 2/576 dead transitions. [2024-01-30 14:19:58,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 576 transitions, 15320 flow [2024-01-30 14:19:58,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:58,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-01-30 14:19:58,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810924369747899 [2024-01-30 14:19:58,052 INFO L175 Difference]: Start difference. First operand has 271 places, 516 transitions, 13338 flow. Second operand 7 states and 229 transitions. [2024-01-30 14:19:58,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 576 transitions, 15320 flow [2024-01-30 14:19:58,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 576 transitions, 15060 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:19:58,829 INFO L231 Difference]: Finished difference. Result has 275 places, 521 transitions, 13702 flow [2024-01-30 14:19:58,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=13080, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13702, PETRI_PLACES=275, PETRI_TRANSITIONS=521} [2024-01-30 14:19:58,830 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 203 predicate places. [2024-01-30 14:19:58,830 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 521 transitions, 13702 flow [2024-01-30 14:19:58,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:58,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:58,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:58,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-01-30 14:19:58,830 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:58,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:58,831 INFO L85 PathProgramCache]: Analyzing trace with hash -110052663, now seen corresponding path program 3 times [2024-01-30 14:19:58,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:58,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707845529] [2024-01-30 14:19:58,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:58,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:58,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:58,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707845529] [2024-01-30 14:19:58,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707845529] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:58,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:58,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:19:58,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088006722] [2024-01-30 14:19:58,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:58,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:58,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:58,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:58,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:58,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:58,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 521 transitions, 13702 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:58,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:58,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:58,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:00,422 INFO L124 PetriNetUnfolderBase]: 2592/5103 cut-off events. [2024-01-30 14:20:00,422 INFO L125 PetriNetUnfolderBase]: For 247765/248343 co-relation queries the response was YES. [2024-01-30 14:20:00,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51041 conditions, 5103 events. 2592/5103 cut-off events. For 247765/248343 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 38133 event pairs, 664 based on Foata normal form. 78/5072 useless extension candidates. Maximal degree in co-relation 50912. Up to 2035 conditions per place. [2024-01-30 14:20:00,483 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 341 selfloop transitions, 197 changer transitions 2/577 dead transitions. [2024-01-30 14:20:00,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 577 transitions, 15592 flow [2024-01-30 14:20:00,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:00,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-01-30 14:20:00,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726890756302521 [2024-01-30 14:20:00,484 INFO L175 Difference]: Start difference. First operand has 275 places, 521 transitions, 13702 flow. Second operand 7 states and 225 transitions. [2024-01-30 14:20:00,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 577 transitions, 15592 flow [2024-01-30 14:20:01,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 577 transitions, 15262 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-30 14:20:01,209 INFO L231 Difference]: Finished difference. Result has 279 places, 527 transitions, 14010 flow [2024-01-30 14:20:01,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=13382, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14010, PETRI_PLACES=279, PETRI_TRANSITIONS=527} [2024-01-30 14:20:01,210 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 207 predicate places. [2024-01-30 14:20:01,210 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 527 transitions, 14010 flow [2024-01-30 14:20:01,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:01,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:01,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:01,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-01-30 14:20:01,210 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:01,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:01,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2146660059, now seen corresponding path program 1 times [2024-01-30 14:20:01,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:01,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156203911] [2024-01-30 14:20:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:01,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:01,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:01,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156203911] [2024-01-30 14:20:01,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156203911] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:01,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:01,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:20:01,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042132895] [2024-01-30 14:20:01,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:01,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:20:01,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:01,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:20:01,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:20:01,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:01,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 527 transitions, 14010 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:01,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:01,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:01,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:02,751 INFO L124 PetriNetUnfolderBase]: 2554/5063 cut-off events. [2024-01-30 14:20:02,751 INFO L125 PetriNetUnfolderBase]: For 248189/248768 co-relation queries the response was YES. [2024-01-30 14:20:02,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50698 conditions, 5063 events. 2554/5063 cut-off events. For 248189/248768 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 37820 event pairs, 445 based on Foata normal form. 61/5013 useless extension candidates. Maximal degree in co-relation 50567. Up to 2016 conditions per place. [2024-01-30 14:20:02,818 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 382 selfloop transitions, 150 changer transitions 2/574 dead transitions. [2024-01-30 14:20:02,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 574 transitions, 15719 flow [2024-01-30 14:20:02,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:02,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-01-30 14:20:02,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43907563025210083 [2024-01-30 14:20:02,819 INFO L175 Difference]: Start difference. First operand has 279 places, 527 transitions, 14010 flow. Second operand 7 states and 209 transitions. [2024-01-30 14:20:02,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 574 transitions, 15719 flow [2024-01-30 14:20:03,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 574 transitions, 15489 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-30 14:20:03,556 INFO L231 Difference]: Finished difference. Result has 282 places, 527 transitions, 14086 flow [2024-01-30 14:20:03,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=13780, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14086, PETRI_PLACES=282, PETRI_TRANSITIONS=527} [2024-01-30 14:20:03,557 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 210 predicate places. [2024-01-30 14:20:03,557 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 527 transitions, 14086 flow [2024-01-30 14:20:03,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:03,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:03,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:03,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-01-30 14:20:03,558 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:03,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:03,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1256523921, now seen corresponding path program 2 times [2024-01-30 14:20:03,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:03,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633293557] [2024-01-30 14:20:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:03,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:03,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:03,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633293557] [2024-01-30 14:20:03,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633293557] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:03,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:03,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:20:03,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505849158] [2024-01-30 14:20:03,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:03,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:20:03,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:03,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:20:03,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:20:03,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:03,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 527 transitions, 14086 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:03,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:03,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:03,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:05,182 INFO L124 PetriNetUnfolderBase]: 2555/5059 cut-off events. [2024-01-30 14:20:05,182 INFO L125 PetriNetUnfolderBase]: For 255558/256153 co-relation queries the response was YES. [2024-01-30 14:20:05,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50763 conditions, 5059 events. 2555/5059 cut-off events. For 255558/256153 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 37708 event pairs, 451 based on Foata normal form. 79/5029 useless extension candidates. Maximal degree in co-relation 50632. Up to 2034 conditions per place. [2024-01-30 14:20:05,242 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 375 selfloop transitions, 161 changer transitions 2/578 dead transitions. [2024-01-30 14:20:05,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 578 transitions, 15895 flow [2024-01-30 14:20:05,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:05,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:05,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-01-30 14:20:05,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453781512605042 [2024-01-30 14:20:05,243 INFO L175 Difference]: Start difference. First operand has 282 places, 527 transitions, 14086 flow. Second operand 7 states and 216 transitions. [2024-01-30 14:20:05,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 578 transitions, 15895 flow [2024-01-30 14:20:05,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 578 transitions, 15769 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-30 14:20:05,930 INFO L231 Difference]: Finished difference. Result has 287 places, 527 transitions, 14289 flow [2024-01-30 14:20:05,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=13960, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14289, PETRI_PLACES=287, PETRI_TRANSITIONS=527} [2024-01-30 14:20:05,931 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 215 predicate places. [2024-01-30 14:20:05,931 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 527 transitions, 14289 flow [2024-01-30 14:20:05,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:05,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:05,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:05,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-01-30 14:20:05,931 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:05,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:05,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1640330695, now seen corresponding path program 2 times [2024-01-30 14:20:05,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:05,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340938654] [2024-01-30 14:20:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:05,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:06,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:06,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340938654] [2024-01-30 14:20:06,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340938654] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:06,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:06,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:20:06,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706463298] [2024-01-30 14:20:06,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:06,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:20:06,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:06,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:20:06,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:20:06,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:06,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 527 transitions, 14289 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:06,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:06,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:06,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:07,585 INFO L124 PetriNetUnfolderBase]: 2643/5279 cut-off events. [2024-01-30 14:20:07,586 INFO L125 PetriNetUnfolderBase]: For 277806/278510 co-relation queries the response was YES. [2024-01-30 14:20:07,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52957 conditions, 5279 events. 2643/5279 cut-off events. For 277806/278510 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 40556 event pairs, 970 based on Foata normal form. 121/5293 useless extension candidates. Maximal degree in co-relation 52825. Up to 2564 conditions per place. [2024-01-30 14:20:07,654 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 362 selfloop transitions, 181 changer transitions 5/588 dead transitions. [2024-01-30 14:20:07,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 588 transitions, 16259 flow [2024-01-30 14:20:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:07,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:07,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-01-30 14:20:07,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726890756302521 [2024-01-30 14:20:07,655 INFO L175 Difference]: Start difference. First operand has 287 places, 527 transitions, 14289 flow. Second operand 7 states and 225 transitions. [2024-01-30 14:20:07,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 588 transitions, 16259 flow [2024-01-30 14:20:08,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 588 transitions, 15964 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-30 14:20:08,426 INFO L231 Difference]: Finished difference. Result has 292 places, 536 transitions, 14706 flow [2024-01-30 14:20:08,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=14002, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14706, PETRI_PLACES=292, PETRI_TRANSITIONS=536} [2024-01-30 14:20:08,427 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 220 predicate places. [2024-01-30 14:20:08,427 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 536 transitions, 14706 flow [2024-01-30 14:20:08,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:08,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:08,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:08,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-01-30 14:20:08,428 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:08,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:08,428 INFO L85 PathProgramCache]: Analyzing trace with hash -2053496559, now seen corresponding path program 3 times [2024-01-30 14:20:08,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:08,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950992123] [2024-01-30 14:20:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:08,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:08,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:08,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:08,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950992123] [2024-01-30 14:20:08,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950992123] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:08,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:08,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:20:08,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204582373] [2024-01-30 14:20:08,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:08,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:20:08,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:08,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:20:08,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:20:08,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:08,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 536 transitions, 14706 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:08,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:08,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:08,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:10,151 INFO L124 PetriNetUnfolderBase]: 2671/5387 cut-off events. [2024-01-30 14:20:10,151 INFO L125 PetriNetUnfolderBase]: For 286997/287733 co-relation queries the response was YES. [2024-01-30 14:20:10,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55186 conditions, 5387 events. 2671/5387 cut-off events. For 286997/287733 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 42055 event pairs, 933 based on Foata normal form. 113/5384 useless extension candidates. Maximal degree in co-relation 55051. Up to 2587 conditions per place. [2024-01-30 14:20:10,218 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 331 selfloop transitions, 216 changer transitions 5/592 dead transitions. [2024-01-30 14:20:10,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 592 transitions, 16575 flow [2024-01-30 14:20:10,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:10,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-01-30 14:20:10,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46218487394957986 [2024-01-30 14:20:10,220 INFO L175 Difference]: Start difference. First operand has 292 places, 536 transitions, 14706 flow. Second operand 7 states and 220 transitions. [2024-01-30 14:20:10,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 592 transitions, 16575 flow [2024-01-30 14:20:11,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 592 transitions, 16414 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-30 14:20:11,015 INFO L231 Difference]: Finished difference. Result has 298 places, 548 transitions, 15370 flow [2024-01-30 14:20:11,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=14557, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15370, PETRI_PLACES=298, PETRI_TRANSITIONS=548} [2024-01-30 14:20:11,021 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 226 predicate places. [2024-01-30 14:20:11,021 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 548 transitions, 15370 flow [2024-01-30 14:20:11,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:11,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:11,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:11,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-01-30 14:20:11,021 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:11,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:11,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2052422409, now seen corresponding path program 4 times [2024-01-30 14:20:11,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:11,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050030076] [2024-01-30 14:20:11,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:11,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:11,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:11,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050030076] [2024-01-30 14:20:11,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050030076] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:11,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:11,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:20:11,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622888727] [2024-01-30 14:20:11,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:11,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:20:11,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:11,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:20:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:20:11,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:11,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 548 transitions, 15370 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:11,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:11,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:11,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:12,756 INFO L124 PetriNetUnfolderBase]: 2660/5391 cut-off events. [2024-01-30 14:20:12,756 INFO L125 PetriNetUnfolderBase]: For 303305/304056 co-relation queries the response was YES. [2024-01-30 14:20:12,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57078 conditions, 5391 events. 2660/5391 cut-off events. For 303305/304056 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 42074 event pairs, 1012 based on Foata normal form. 95/5370 useless extension candidates. Maximal degree in co-relation 56940. Up to 2586 conditions per place. [2024-01-30 14:20:12,837 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 328 selfloop transitions, 217 changer transitions 3/588 dead transitions. [2024-01-30 14:20:12,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 588 transitions, 16994 flow [2024-01-30 14:20:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-01-30 14:20:12,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45168067226890757 [2024-01-30 14:20:12,840 INFO L175 Difference]: Start difference. First operand has 298 places, 548 transitions, 15370 flow. Second operand 7 states and 215 transitions. [2024-01-30 14:20:12,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 588 transitions, 16994 flow [2024-01-30 14:20:13,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 588 transitions, 16597 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-01-30 14:20:13,696 INFO L231 Difference]: Finished difference. Result has 294 places, 551 transitions, 15513 flow [2024-01-30 14:20:13,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=14949, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15513, PETRI_PLACES=294, PETRI_TRANSITIONS=551} [2024-01-30 14:20:13,697 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 222 predicate places. [2024-01-30 14:20:13,697 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 551 transitions, 15513 flow [2024-01-30 14:20:13,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:13,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:13,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:13,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-01-30 14:20:13,697 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:13,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash 444946641, now seen corresponding path program 3 times [2024-01-30 14:20:13,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:13,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831851113] [2024-01-30 14:20:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:13,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:13,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:13,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831851113] [2024-01-30 14:20:13,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831851113] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:13,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:13,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:20:13,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269318001] [2024-01-30 14:20:13,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:13,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:20:13,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:20:13,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:20:13,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:13,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 551 transitions, 15513 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:13,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:13,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:13,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:15,359 INFO L124 PetriNetUnfolderBase]: 2619/5350 cut-off events. [2024-01-30 14:20:15,360 INFO L125 PetriNetUnfolderBase]: For 307066/307808 co-relation queries the response was YES. [2024-01-30 14:20:15,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57187 conditions, 5350 events. 2619/5350 cut-off events. For 307066/307808 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 42003 event pairs, 703 based on Foata normal form. 127/5366 useless extension candidates. Maximal degree in co-relation 57055. Up to 2312 conditions per place. [2024-01-30 14:20:15,431 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 363 selfloop transitions, 190 changer transitions 2/595 dead transitions. [2024-01-30 14:20:15,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 595 transitions, 17336 flow [2024-01-30 14:20:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:15,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-01-30 14:20:15,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453781512605042 [2024-01-30 14:20:15,432 INFO L175 Difference]: Start difference. First operand has 294 places, 551 transitions, 15513 flow. Second operand 7 states and 216 transitions. [2024-01-30 14:20:15,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 595 transitions, 17336 flow [2024-01-30 14:20:16,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 595 transitions, 17011 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-01-30 14:20:16,273 INFO L231 Difference]: Finished difference. Result has 297 places, 551 transitions, 15578 flow [2024-01-30 14:20:16,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=15188, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15578, PETRI_PLACES=297, PETRI_TRANSITIONS=551} [2024-01-30 14:20:16,274 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 225 predicate places. [2024-01-30 14:20:16,274 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 551 transitions, 15578 flow [2024-01-30 14:20:16,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:16,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:16,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:16,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-01-30 14:20:16,274 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:16,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:16,275 INFO L85 PathProgramCache]: Analyzing trace with hash -99716765, now seen corresponding path program 4 times [2024-01-30 14:20:16,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:16,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568724137] [2024-01-30 14:20:16,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:16,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:16,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:16,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568724137] [2024-01-30 14:20:16,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568724137] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:16,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:16,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:20:16,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216912844] [2024-01-30 14:20:16,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:16,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:20:16,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:16,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:20:16,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:20:16,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:16,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 551 transitions, 15578 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:16,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:16,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:16,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:17,939 INFO L124 PetriNetUnfolderBase]: 2626/5367 cut-off events. [2024-01-30 14:20:17,939 INFO L125 PetriNetUnfolderBase]: For 307725/308448 co-relation queries the response was YES. [2024-01-30 14:20:17,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57679 conditions, 5367 events. 2626/5367 cut-off events. For 307725/308448 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 42153 event pairs, 677 based on Foata normal form. 117/5377 useless extension candidates. Maximal degree in co-relation 57546. Up to 2297 conditions per place. [2024-01-30 14:20:18,009 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 364 selfloop transitions, 200 changer transitions 2/606 dead transitions. [2024-01-30 14:20:18,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 606 transitions, 17711 flow [2024-01-30 14:20:18,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:18,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-01-30 14:20:18,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684873949579832 [2024-01-30 14:20:18,010 INFO L175 Difference]: Start difference. First operand has 297 places, 551 transitions, 15578 flow. Second operand 7 states and 223 transitions. [2024-01-30 14:20:18,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 606 transitions, 17711 flow [2024-01-30 14:20:18,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 606 transitions, 17306 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-01-30 14:20:18,849 INFO L231 Difference]: Finished difference. Result has 298 places, 556 transitions, 15822 flow [2024-01-30 14:20:18,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=15183, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15822, PETRI_PLACES=298, PETRI_TRANSITIONS=556} [2024-01-30 14:20:18,850 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 226 predicate places. [2024-01-30 14:20:18,850 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 556 transitions, 15822 flow [2024-01-30 14:20:18,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:18,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:18,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:18,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-01-30 14:20:18,851 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:18,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:18,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1213482445, now seen corresponding path program 5 times [2024-01-30 14:20:18,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:18,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435733068] [2024-01-30 14:20:18,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:18,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:18,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:18,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435733068] [2024-01-30 14:20:18,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435733068] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:18,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:18,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:20:18,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122817667] [2024-01-30 14:20:18,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:18,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:20:18,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:18,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:20:18,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:20:18,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:18,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 556 transitions, 15822 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:18,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:18,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:18,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:20,467 INFO L124 PetriNetUnfolderBase]: 2637/5375 cut-off events. [2024-01-30 14:20:20,468 INFO L125 PetriNetUnfolderBase]: For 308691/309421 co-relation queries the response was YES. [2024-01-30 14:20:20,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58268 conditions, 5375 events. 2637/5375 cut-off events. For 308691/309421 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 42153 event pairs, 672 based on Foata normal form. 97/5361 useless extension candidates. Maximal degree in co-relation 58134. Up to 2302 conditions per place. [2024-01-30 14:20:20,537 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 362 selfloop transitions, 202 changer transitions 2/606 dead transitions. [2024-01-30 14:20:20,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 606 transitions, 17840 flow [2024-01-30 14:20:20,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:20,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-01-30 14:20:20,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4579831932773109 [2024-01-30 14:20:20,551 INFO L175 Difference]: Start difference. First operand has 298 places, 556 transitions, 15822 flow. Second operand 7 states and 218 transitions. [2024-01-30 14:20:20,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 606 transitions, 17840 flow [2024-01-30 14:20:21,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 606 transitions, 17569 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-01-30 14:20:21,395 INFO L231 Difference]: Finished difference. Result has 303 places, 562 transitions, 16214 flow [2024-01-30 14:20:21,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=15556, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16214, PETRI_PLACES=303, PETRI_TRANSITIONS=562} [2024-01-30 14:20:21,395 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 231 predicate places. [2024-01-30 14:20:21,396 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 562 transitions, 16214 flow [2024-01-30 14:20:21,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:21,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:21,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:21,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-01-30 14:20:21,396 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:21,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:21,396 INFO L85 PathProgramCache]: Analyzing trace with hash 426426912, now seen corresponding path program 1 times [2024-01-30 14:20:21,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:21,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508289993] [2024-01-30 14:20:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:21,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:21,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:21,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508289993] [2024-01-30 14:20:21,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508289993] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:21,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:21,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:20:21,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655475706] [2024-01-30 14:20:21,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:21,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:20:21,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:21,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:20:21,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:20:21,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:21,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 562 transitions, 16214 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:21,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:21,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:21,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:23,127 INFO L124 PetriNetUnfolderBase]: 2660/5451 cut-off events. [2024-01-30 14:20:23,127 INFO L125 PetriNetUnfolderBase]: For 321428/322324 co-relation queries the response was YES. [2024-01-30 14:20:23,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59996 conditions, 5451 events. 2660/5451 cut-off events. For 321428/322324 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 42772 event pairs, 1035 based on Foata normal form. 77/5417 useless extension candidates. Maximal degree in co-relation 59860. Up to 2679 conditions per place. [2024-01-30 14:20:23,199 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 380 selfloop transitions, 178 changer transitions 0/598 dead transitions. [2024-01-30 14:20:23,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 598 transitions, 17794 flow [2024-01-30 14:20:23,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-01-30 14:20:23,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43487394957983194 [2024-01-30 14:20:23,200 INFO L175 Difference]: Start difference. First operand has 303 places, 562 transitions, 16214 flow. Second operand 7 states and 207 transitions. [2024-01-30 14:20:23,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 598 transitions, 17794 flow [2024-01-30 14:20:24,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 598 transitions, 17471 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-30 14:20:24,140 INFO L231 Difference]: Finished difference. Result has 304 places, 564 transitions, 16312 flow [2024-01-30 14:20:24,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=15895, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16312, PETRI_PLACES=304, PETRI_TRANSITIONS=564} [2024-01-30 14:20:24,142 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 232 predicate places. [2024-01-30 14:20:24,142 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 564 transitions, 16312 flow [2024-01-30 14:20:24,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:24,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:24,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:24,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-01-30 14:20:24,142 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:24,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:24,142 INFO L85 PathProgramCache]: Analyzing trace with hash 699149046, now seen corresponding path program 2 times [2024-01-30 14:20:24,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:24,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752500216] [2024-01-30 14:20:24,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:24,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:24,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:24,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752500216] [2024-01-30 14:20:24,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752500216] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:24,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:24,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:20:24,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500637028] [2024-01-30 14:20:24,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:24,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:20:24,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:24,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:20:24,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:20:24,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:24,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 564 transitions, 16312 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:24,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:24,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:24,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:25,849 INFO L124 PetriNetUnfolderBase]: 2662/5483 cut-off events. [2024-01-30 14:20:25,849 INFO L125 PetriNetUnfolderBase]: For 320014/320927 co-relation queries the response was YES. [2024-01-30 14:20:25,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60100 conditions, 5483 events. 2662/5483 cut-off events. For 320014/320927 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 43341 event pairs, 1031 based on Foata normal form. 71/5437 useless extension candidates. Maximal degree in co-relation 59965. Up to 2685 conditions per place. [2024-01-30 14:20:25,923 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 384 selfloop transitions, 189 changer transitions 0/613 dead transitions. [2024-01-30 14:20:25,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 613 transitions, 18127 flow [2024-01-30 14:20:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:25,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:25,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-01-30 14:20:25,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4579831932773109 [2024-01-30 14:20:25,924 INFO L175 Difference]: Start difference. First operand has 304 places, 564 transitions, 16312 flow. Second operand 7 states and 218 transitions. [2024-01-30 14:20:25,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 613 transitions, 18127 flow [2024-01-30 14:20:26,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 613 transitions, 17785 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-30 14:20:26,901 INFO L231 Difference]: Finished difference. Result has 306 places, 566 transitions, 16408 flow [2024-01-30 14:20:26,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=15976, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16408, PETRI_PLACES=306, PETRI_TRANSITIONS=566} [2024-01-30 14:20:26,901 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 234 predicate places. [2024-01-30 14:20:26,901 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 566 transitions, 16408 flow [2024-01-30 14:20:26,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:26,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:26,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:26,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-01-30 14:20:26,902 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:26,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:26,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2087994248, now seen corresponding path program 3 times [2024-01-30 14:20:26,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:26,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106706291] [2024-01-30 14:20:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:26,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:27,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:27,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106706291] [2024-01-30 14:20:27,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106706291] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:27,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:27,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:20:27,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659297336] [2024-01-30 14:20:27,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:27,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:20:27,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:20:27,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:20:27,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:27,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 566 transitions, 16408 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:27,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:27,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:27,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:28,639 INFO L124 PetriNetUnfolderBase]: 2664/5489 cut-off events. [2024-01-30 14:20:28,639 INFO L125 PetriNetUnfolderBase]: For 318938/319851 co-relation queries the response was YES. [2024-01-30 14:20:28,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60097 conditions, 5489 events. 2664/5489 cut-off events. For 318938/319851 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 43409 event pairs, 977 based on Foata normal form. 77/5449 useless extension candidates. Maximal degree in co-relation 59962. Up to 2693 conditions per place. [2024-01-30 14:20:28,716 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 388 selfloop transitions, 179 changer transitions 0/607 dead transitions. [2024-01-30 14:20:28,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 607 transitions, 18040 flow [2024-01-30 14:20:28,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:28,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:28,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 211 transitions. [2024-01-30 14:20:28,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4432773109243697 [2024-01-30 14:20:28,717 INFO L175 Difference]: Start difference. First operand has 306 places, 566 transitions, 16408 flow. Second operand 7 states and 211 transitions. [2024-01-30 14:20:28,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 607 transitions, 18040 flow [2024-01-30 14:20:29,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 607 transitions, 17671 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-01-30 14:20:29,703 INFO L231 Difference]: Finished difference. Result has 303 places, 568 transitions, 16497 flow [2024-01-30 14:20:29,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16015, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16497, PETRI_PLACES=303, PETRI_TRANSITIONS=568} [2024-01-30 14:20:29,704 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 231 predicate places. [2024-01-30 14:20:29,704 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 568 transitions, 16497 flow [2024-01-30 14:20:29,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:29,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:29,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:29,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-01-30 14:20:29,704 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:29,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:29,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1904634216, now seen corresponding path program 1 times [2024-01-30 14:20:29,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:29,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602921429] [2024-01-30 14:20:29,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:29,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:29,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:29,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602921429] [2024-01-30 14:20:29,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602921429] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:29,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:29,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:20:29,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680573898] [2024-01-30 14:20:29,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:29,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:20:29,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:29,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:20:29,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:20:29,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:20:29,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 568 transitions, 16497 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:29,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:29,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:20:29,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:31,097 INFO L124 PetriNetUnfolderBase]: 2058/4515 cut-off events. [2024-01-30 14:20:31,097 INFO L125 PetriNetUnfolderBase]: For 297216/298401 co-relation queries the response was YES. [2024-01-30 14:20:31,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50936 conditions, 4515 events. 2058/4515 cut-off events. For 297216/298401 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 37814 event pairs, 505 based on Foata normal form. 92/4398 useless extension candidates. Maximal degree in co-relation 50805. Up to 1912 conditions per place. [2024-01-30 14:20:31,156 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 336 selfloop transitions, 187 changer transitions 2/603 dead transitions. [2024-01-30 14:20:31,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 603 transitions, 18170 flow [2024-01-30 14:20:31,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:20:31,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:20:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2024-01-30 14:20:31,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5735294117647058 [2024-01-30 14:20:31,157 INFO L175 Difference]: Start difference. First operand has 303 places, 568 transitions, 16497 flow. Second operand 6 states and 234 transitions. [2024-01-30 14:20:31,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 603 transitions, 18170 flow [2024-01-30 14:20:31,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 603 transitions, 17881 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-30 14:20:31,906 INFO L231 Difference]: Finished difference. Result has 305 places, 568 transitions, 16593 flow [2024-01-30 14:20:31,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16208, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16593, PETRI_PLACES=305, PETRI_TRANSITIONS=568} [2024-01-30 14:20:31,907 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 233 predicate places. [2024-01-30 14:20:31,907 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 568 transitions, 16593 flow [2024-01-30 14:20:31,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:31,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:31,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:31,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-01-30 14:20:31,907 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:31,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:31,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1027344488, now seen corresponding path program 2 times [2024-01-30 14:20:31,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:31,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414940924] [2024-01-30 14:20:31,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:31,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:31,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:31,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414940924] [2024-01-30 14:20:31,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414940924] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:31,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:31,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:20:31,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357764422] [2024-01-30 14:20:31,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:31,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:20:31,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:31,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:20:31,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:20:32,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:20:32,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 568 transitions, 16593 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:32,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:32,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:20:32,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:33,269 INFO L124 PetriNetUnfolderBase]: 2044/4469 cut-off events. [2024-01-30 14:20:33,269 INFO L125 PetriNetUnfolderBase]: For 296830/297958 co-relation queries the response was YES. [2024-01-30 14:20:33,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50740 conditions, 4469 events. 2044/4469 cut-off events. For 296830/297958 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 37049 event pairs, 358 based on Foata normal form. 78/4307 useless extension candidates. Maximal degree in co-relation 50608. Up to 1911 conditions per place. [2024-01-30 14:20:33,329 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 352 selfloop transitions, 162 changer transitions 2/594 dead transitions. [2024-01-30 14:20:33,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 594 transitions, 18012 flow [2024-01-30 14:20:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:20:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:20:33,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-01-30 14:20:33,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2024-01-30 14:20:33,330 INFO L175 Difference]: Start difference. First operand has 305 places, 568 transitions, 16593 flow. Second operand 6 states and 224 transitions. [2024-01-30 14:20:33,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 594 transitions, 18012 flow [2024-01-30 14:20:34,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 594 transitions, 17614 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-30 14:20:34,129 INFO L231 Difference]: Finished difference. Result has 307 places, 572 transitions, 16672 flow [2024-01-30 14:20:34,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16195, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16672, PETRI_PLACES=307, PETRI_TRANSITIONS=572} [2024-01-30 14:20:34,129 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 235 predicate places. [2024-01-30 14:20:34,130 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 572 transitions, 16672 flow [2024-01-30 14:20:34,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:34,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:34,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:34,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-01-30 14:20:34,130 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:34,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:34,131 INFO L85 PathProgramCache]: Analyzing trace with hash -410466536, now seen corresponding path program 3 times [2024-01-30 14:20:34,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:34,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458762983] [2024-01-30 14:20:34,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:34,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:34,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:34,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458762983] [2024-01-30 14:20:34,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458762983] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:34,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:34,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:20:34,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033237057] [2024-01-30 14:20:34,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:34,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:20:34,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:34,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:20:34,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:20:34,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:20:34,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 572 transitions, 16672 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:34,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:34,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:20:34,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:35,564 INFO L124 PetriNetUnfolderBase]: 2135/4648 cut-off events. [2024-01-30 14:20:35,564 INFO L125 PetriNetUnfolderBase]: For 303112/304331 co-relation queries the response was YES. [2024-01-30 14:20:35,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52467 conditions, 4648 events. 2135/4648 cut-off events. For 303112/304331 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 38843 event pairs, 523 based on Foata normal form. 83/4531 useless extension candidates. Maximal degree in co-relation 52333. Up to 1940 conditions per place. [2024-01-30 14:20:35,628 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 357 selfloop transitions, 180 changer transitions 2/617 dead transitions. [2024-01-30 14:20:35,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 617 transitions, 18552 flow [2024-01-30 14:20:35,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:20:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:20:35,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 236 transitions. [2024-01-30 14:20:35,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5784313725490197 [2024-01-30 14:20:35,629 INFO L175 Difference]: Start difference. First operand has 307 places, 572 transitions, 16672 flow. Second operand 6 states and 236 transitions. [2024-01-30 14:20:35,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 617 transitions, 18552 flow [2024-01-30 14:20:36,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 617 transitions, 18233 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-01-30 14:20:36,385 INFO L231 Difference]: Finished difference. Result has 311 places, 577 transitions, 16845 flow [2024-01-30 14:20:36,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16362, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16845, PETRI_PLACES=311, PETRI_TRANSITIONS=577} [2024-01-30 14:20:36,386 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 239 predicate places. [2024-01-30 14:20:36,386 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 577 transitions, 16845 flow [2024-01-30 14:20:36,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:36,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:36,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:36,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-01-30 14:20:36,386 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:36,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:36,386 INFO L85 PathProgramCache]: Analyzing trace with hash -340269764, now seen corresponding path program 4 times [2024-01-30 14:20:36,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:36,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917328012] [2024-01-30 14:20:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:36,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:36,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:36,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917328012] [2024-01-30 14:20:36,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917328012] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:36,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:36,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:20:36,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160231259] [2024-01-30 14:20:36,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:36,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:20:36,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:36,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:20:36,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:20:36,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:20:36,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 577 transitions, 16845 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:36,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:36,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:20:36,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:37,899 INFO L124 PetriNetUnfolderBase]: 2167/4707 cut-off events. [2024-01-30 14:20:37,900 INFO L125 PetriNetUnfolderBase]: For 310854/312088 co-relation queries the response was YES. [2024-01-30 14:20:37,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52864 conditions, 4707 events. 2167/4707 cut-off events. For 310854/312088 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 39373 event pairs, 517 based on Foata normal form. 70/4577 useless extension candidates. Maximal degree in co-relation 52727. Up to 1952 conditions per place. [2024-01-30 14:20:37,970 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 342 selfloop transitions, 195 changer transitions 2/617 dead transitions. [2024-01-30 14:20:37,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 617 transitions, 18577 flow [2024-01-30 14:20:37,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:20:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:20:37,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 236 transitions. [2024-01-30 14:20:37,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5784313725490197 [2024-01-30 14:20:37,971 INFO L175 Difference]: Start difference. First operand has 311 places, 577 transitions, 16845 flow. Second operand 6 states and 236 transitions. [2024-01-30 14:20:37,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 617 transitions, 18577 flow [2024-01-30 14:20:38,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 617 transitions, 18367 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-01-30 14:20:38,834 INFO L231 Difference]: Finished difference. Result has 316 places, 580 transitions, 17182 flow [2024-01-30 14:20:38,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16637, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=17182, PETRI_PLACES=316, PETRI_TRANSITIONS=580} [2024-01-30 14:20:38,834 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 244 predicate places. [2024-01-30 14:20:38,835 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 580 transitions, 17182 flow [2024-01-30 14:20:38,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:38,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:38,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:38,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-01-30 14:20:38,835 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:38,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:38,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1312456280, now seen corresponding path program 5 times [2024-01-30 14:20:38,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:38,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421887010] [2024-01-30 14:20:38,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:38,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:38,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:38,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421887010] [2024-01-30 14:20:38,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421887010] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:38,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:38,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:20:38,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340112381] [2024-01-30 14:20:38,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:38,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:20:38,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:38,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:20:38,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:20:38,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:20:38,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 580 transitions, 17182 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:38,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:38,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:20:38,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:40,288 INFO L124 PetriNetUnfolderBase]: 2145/4654 cut-off events. [2024-01-30 14:20:40,288 INFO L125 PetriNetUnfolderBase]: For 324372/325598 co-relation queries the response was YES. [2024-01-30 14:20:40,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52867 conditions, 4654 events. 2145/4654 cut-off events. For 324372/325598 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 38893 event pairs, 505 based on Foata normal form. 93/4509 useless extension candidates. Maximal degree in co-relation 52727. Up to 1954 conditions per place. [2024-01-30 14:20:40,354 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 355 selfloop transitions, 183 changer transitions 2/618 dead transitions. [2024-01-30 14:20:40,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 618 transitions, 18931 flow [2024-01-30 14:20:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:20:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:20:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2024-01-30 14:20:40,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5735294117647058 [2024-01-30 14:20:40,355 INFO L175 Difference]: Start difference. First operand has 316 places, 580 transitions, 17182 flow. Second operand 6 states and 234 transitions. [2024-01-30 14:20:40,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 618 transitions, 18931 flow [2024-01-30 14:20:41,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 618 transitions, 18596 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-30 14:20:41,172 INFO L231 Difference]: Finished difference. Result has 319 places, 580 transitions, 17220 flow [2024-01-30 14:20:41,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16847, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=17220, PETRI_PLACES=319, PETRI_TRANSITIONS=580} [2024-01-30 14:20:41,173 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 247 predicate places. [2024-01-30 14:20:41,173 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 580 transitions, 17220 flow [2024-01-30 14:20:41,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:41,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:41,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:41,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-01-30 14:20:41,173 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:41,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:41,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1044609112, now seen corresponding path program 1 times [2024-01-30 14:20:41,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:41,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338913135] [2024-01-30 14:20:41,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:41,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:41,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:41,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338913135] [2024-01-30 14:20:41,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338913135] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:41,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:41,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:20:41,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514158628] [2024-01-30 14:20:41,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:41,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:20:41,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:41,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:20:41,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:20:41,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:20:41,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 580 transitions, 17220 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:41,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:41,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:20:41,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:42,696 INFO L124 PetriNetUnfolderBase]: 2141/4646 cut-off events. [2024-01-30 14:20:42,697 INFO L125 PetriNetUnfolderBase]: For 319876/321072 co-relation queries the response was YES. [2024-01-30 14:20:42,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52823 conditions, 4646 events. 2141/4646 cut-off events. For 319876/321072 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 38780 event pairs, 491 based on Foata normal form. 81/4489 useless extension candidates. Maximal degree in co-relation 52682. Up to 1958 conditions per place. [2024-01-30 14:20:42,764 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 335 selfloop transitions, 198 changer transitions 2/613 dead transitions. [2024-01-30 14:20:42,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 613 transitions, 18836 flow [2024-01-30 14:20:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:20:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:20:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-01-30 14:20:42,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661764705882353 [2024-01-30 14:20:42,765 INFO L175 Difference]: Start difference. First operand has 319 places, 580 transitions, 17220 flow. Second operand 6 states and 231 transitions. [2024-01-30 14:20:42,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 613 transitions, 18836 flow [2024-01-30 14:20:43,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 613 transitions, 18512 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-30 14:20:43,703 INFO L231 Difference]: Finished difference. Result has 322 places, 581 transitions, 17326 flow [2024-01-30 14:20:43,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16898, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=17326, PETRI_PLACES=322, PETRI_TRANSITIONS=581} [2024-01-30 14:20:43,704 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 250 predicate places. [2024-01-30 14:20:43,704 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 581 transitions, 17326 flow [2024-01-30 14:20:43,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:43,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:43,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:43,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-01-30 14:20:43,704 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:43,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:43,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1081801598, now seen corresponding path program 1 times [2024-01-30 14:20:43,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:43,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056810352] [2024-01-30 14:20:43,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:43,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:43,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056810352] [2024-01-30 14:20:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056810352] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:43,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:43,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:20:43,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179254767] [2024-01-30 14:20:43,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:43,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:20:43,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:43,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:20:43,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:20:43,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:43,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 581 transitions, 17326 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:43,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:43,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:43,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:45,623 INFO L124 PetriNetUnfolderBase]: 2698/5506 cut-off events. [2024-01-30 14:20:45,623 INFO L125 PetriNetUnfolderBase]: For 337578/338275 co-relation queries the response was YES. [2024-01-30 14:20:45,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60513 conditions, 5506 events. 2698/5506 cut-off events. For 337578/338275 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 43368 event pairs, 822 based on Foata normal form. 75/5457 useless extension candidates. Maximal degree in co-relation 60370. Up to 3162 conditions per place. [2024-01-30 14:20:45,698 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 460 selfloop transitions, 119 changer transitions 0/620 dead transitions. [2024-01-30 14:20:45,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 620 transitions, 18995 flow [2024-01-30 14:20:45,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:20:45,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:20:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-01-30 14:20:45,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39889705882352944 [2024-01-30 14:20:45,699 INFO L175 Difference]: Start difference. First operand has 322 places, 581 transitions, 17326 flow. Second operand 8 states and 217 transitions. [2024-01-30 14:20:45,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 620 transitions, 18995 flow [2024-01-30 14:20:46,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 620 transitions, 18649 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-30 14:20:46,715 INFO L231 Difference]: Finished difference. Result has 327 places, 582 transitions, 17249 flow [2024-01-30 14:20:46,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16980, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17249, PETRI_PLACES=327, PETRI_TRANSITIONS=582} [2024-01-30 14:20:46,716 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 255 predicate places. [2024-01-30 14:20:46,716 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 582 transitions, 17249 flow [2024-01-30 14:20:46,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:46,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:46,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:46,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-01-30 14:20:46,717 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:46,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:46,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1990723300, now seen corresponding path program 2 times [2024-01-30 14:20:46,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:46,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519105595] [2024-01-30 14:20:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:46,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:46,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:46,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:46,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519105595] [2024-01-30 14:20:46,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519105595] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:46,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:46,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:20:46,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099939579] [2024-01-30 14:20:46,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:46,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:20:46,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:46,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:20:46,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:20:46,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:46,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 582 transitions, 17249 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:46,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:46,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:46,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:48,577 INFO L124 PetriNetUnfolderBase]: 2693/5511 cut-off events. [2024-01-30 14:20:48,577 INFO L125 PetriNetUnfolderBase]: For 329309/330011 co-relation queries the response was YES. [2024-01-30 14:20:48,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60146 conditions, 5511 events. 2693/5511 cut-off events. For 329309/330011 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 43563 event pairs, 808 based on Foata normal form. 77/5464 useless extension candidates. Maximal degree in co-relation 60002. Up to 3198 conditions per place. [2024-01-30 14:20:48,644 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 455 selfloop transitions, 123 changer transitions 0/619 dead transitions. [2024-01-30 14:20:48,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 619 transitions, 18946 flow [2024-01-30 14:20:48,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:48,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-01-30 14:20:48,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41386554621848737 [2024-01-30 14:20:48,645 INFO L175 Difference]: Start difference. First operand has 327 places, 582 transitions, 17249 flow. Second operand 7 states and 197 transitions. [2024-01-30 14:20:48,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 619 transitions, 18946 flow [2024-01-30 14:20:49,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 619 transitions, 18585 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-30 14:20:49,554 INFO L231 Difference]: Finished difference. Result has 328 places, 582 transitions, 17142 flow [2024-01-30 14:20:49,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16888, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17142, PETRI_PLACES=328, PETRI_TRANSITIONS=582} [2024-01-30 14:20:49,555 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 256 predicate places. [2024-01-30 14:20:49,555 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 582 transitions, 17142 flow [2024-01-30 14:20:49,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:49,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:49,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:49,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-01-30 14:20:49,556 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:49,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:49,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1522112372, now seen corresponding path program 2 times [2024-01-30 14:20:49,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:49,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280697113] [2024-01-30 14:20:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:49,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:49,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:49,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:49,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280697113] [2024-01-30 14:20:49,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280697113] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:49,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:49,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:20:49,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363810323] [2024-01-30 14:20:49,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:49,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:20:49,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:49,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:20:49,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:20:49,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:20:49,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 582 transitions, 17142 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:49,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:49,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:20:49,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:51,051 INFO L124 PetriNetUnfolderBase]: 2113/4638 cut-off events. [2024-01-30 14:20:51,051 INFO L125 PetriNetUnfolderBase]: For 301728/302880 co-relation queries the response was YES. [2024-01-30 14:20:51,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51992 conditions, 4638 events. 2113/4638 cut-off events. For 301728/302880 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 38594 event pairs, 499 based on Foata normal form. 74/4548 useless extension candidates. Maximal degree in co-relation 51848. Up to 1951 conditions per place. [2024-01-30 14:20:51,117 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 342 selfloop transitions, 194 changer transitions 2/616 dead transitions. [2024-01-30 14:20:51,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 616 transitions, 18716 flow [2024-01-30 14:20:51,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:20:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:20:51,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 237 transitions. [2024-01-30 14:20:51,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5808823529411765 [2024-01-30 14:20:51,119 INFO L175 Difference]: Start difference. First operand has 328 places, 582 transitions, 17142 flow. Second operand 6 states and 237 transitions. [2024-01-30 14:20:51,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 616 transitions, 18716 flow [2024-01-30 14:20:51,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 616 transitions, 18449 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-30 14:20:51,956 INFO L231 Difference]: Finished difference. Result has 328 places, 582 transitions, 17274 flow [2024-01-30 14:20:51,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16875, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=17274, PETRI_PLACES=328, PETRI_TRANSITIONS=582} [2024-01-30 14:20:51,956 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 256 predicate places. [2024-01-30 14:20:51,956 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 582 transitions, 17274 flow [2024-01-30 14:20:51,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:51,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:51,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:51,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-01-30 14:20:51,957 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:51,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:51,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1969305960, now seen corresponding path program 3 times [2024-01-30 14:20:51,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:51,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805950807] [2024-01-30 14:20:51,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:51,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:52,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:52,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:52,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805950807] [2024-01-30 14:20:52,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805950807] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:52,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:52,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:20:52,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764173609] [2024-01-30 14:20:52,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:52,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:20:52,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:20:52,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:20:52,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:20:52,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 582 transitions, 17274 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:52,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:52,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:20:52,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:53,463 INFO L124 PetriNetUnfolderBase]: 2101/4552 cut-off events. [2024-01-30 14:20:53,463 INFO L125 PetriNetUnfolderBase]: For 307524/308661 co-relation queries the response was YES. [2024-01-30 14:20:53,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51477 conditions, 4552 events. 2101/4552 cut-off events. For 307524/308661 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 37541 event pairs, 346 based on Foata normal form. 77/4387 useless extension candidates. Maximal degree in co-relation 51332. Up to 1941 conditions per place. [2024-01-30 14:20:53,532 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 354 selfloop transitions, 169 changer transitions 2/603 dead transitions. [2024-01-30 14:20:53,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 603 transitions, 18596 flow [2024-01-30 14:20:53,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:20:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:20:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-01-30 14:20:53,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5465686274509803 [2024-01-30 14:20:53,533 INFO L175 Difference]: Start difference. First operand has 328 places, 582 transitions, 17274 flow. Second operand 6 states and 223 transitions. [2024-01-30 14:20:53,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 603 transitions, 18596 flow [2024-01-30 14:20:54,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 603 transitions, 17909 flow, removed 0 selfloop flow, removed 20 redundant places. [2024-01-30 14:20:54,250 INFO L231 Difference]: Finished difference. Result has 312 places, 581 transitions, 16879 flow [2024-01-30 14:20:54,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16541, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16879, PETRI_PLACES=312, PETRI_TRANSITIONS=581} [2024-01-30 14:20:54,251 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 240 predicate places. [2024-01-30 14:20:54,251 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 581 transitions, 16879 flow [2024-01-30 14:20:54,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:54,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:54,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:54,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-01-30 14:20:54,252 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:54,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:54,252 INFO L85 PathProgramCache]: Analyzing trace with hash -748301684, now seen corresponding path program 1 times [2024-01-30 14:20:54,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:54,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574806156] [2024-01-30 14:20:54,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:54,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:54,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:54,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574806156] [2024-01-30 14:20:54,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574806156] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:54,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:54,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:20:54,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133448499] [2024-01-30 14:20:54,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:54,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:20:54,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:54,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:20:54,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:20:54,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:54,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 581 transitions, 16879 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:54,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:54,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:54,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:55,966 INFO L124 PetriNetUnfolderBase]: 2653/5424 cut-off events. [2024-01-30 14:20:55,967 INFO L125 PetriNetUnfolderBase]: For 313755/314651 co-relation queries the response was YES. [2024-01-30 14:20:56,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58611 conditions, 5424 events. 2653/5424 cut-off events. For 313755/314651 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 42753 event pairs, 438 based on Foata normal form. 76/5382 useless extension candidates. Maximal degree in co-relation 58482. Up to 2426 conditions per place. [2024-01-30 14:20:56,044 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 362 selfloop transitions, 217 changer transitions 2/621 dead transitions. [2024-01-30 14:20:56,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 621 transitions, 18634 flow [2024-01-30 14:20:56,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-01-30 14:20:56,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44537815126050423 [2024-01-30 14:20:56,045 INFO L175 Difference]: Start difference. First operand has 312 places, 581 transitions, 16879 flow. Second operand 7 states and 212 transitions. [2024-01-30 14:20:56,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 621 transitions, 18634 flow [2024-01-30 14:20:56,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 621 transitions, 18421 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:20:56,927 INFO L231 Difference]: Finished difference. Result has 316 places, 581 transitions, 17158 flow [2024-01-30 14:20:56,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16666, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17158, PETRI_PLACES=316, PETRI_TRANSITIONS=581} [2024-01-30 14:20:56,928 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 244 predicate places. [2024-01-30 14:20:56,928 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 581 transitions, 17158 flow [2024-01-30 14:20:56,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:56,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:56,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:56,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-01-30 14:20:56,928 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:56,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:56,928 INFO L85 PathProgramCache]: Analyzing trace with hash 382658054, now seen corresponding path program 2 times [2024-01-30 14:20:56,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:56,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269356597] [2024-01-30 14:20:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:56,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:57,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:57,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269356597] [2024-01-30 14:20:57,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269356597] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:57,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:57,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:20:57,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305958131] [2024-01-30 14:20:57,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:57,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:20:57,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:57,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:20:57,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:20:57,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:57,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 581 transitions, 17158 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:57,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:57,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:57,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:58,608 INFO L124 PetriNetUnfolderBase]: 2639/5398 cut-off events. [2024-01-30 14:20:58,608 INFO L125 PetriNetUnfolderBase]: For 325399/326295 co-relation queries the response was YES. [2024-01-30 14:20:58,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59096 conditions, 5398 events. 2639/5398 cut-off events. For 325399/326295 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 42546 event pairs, 441 based on Foata normal form. 72/5352 useless extension candidates. Maximal degree in co-relation 58966. Up to 2420 conditions per place. [2024-01-30 14:20:58,674 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 380 selfloop transitions, 198 changer transitions 2/620 dead transitions. [2024-01-30 14:20:58,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 620 transitions, 18899 flow [2024-01-30 14:20:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:20:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:20:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-01-30 14:20:58,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2024-01-30 14:20:58,675 INFO L175 Difference]: Start difference. First operand has 316 places, 581 transitions, 17158 flow. Second operand 7 states and 210 transitions. [2024-01-30 14:20:58,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 620 transitions, 18899 flow [2024-01-30 14:20:59,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 620 transitions, 18463 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-30 14:20:59,446 INFO L231 Difference]: Finished difference. Result has 317 places, 581 transitions, 17131 flow [2024-01-30 14:20:59,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16722, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17131, PETRI_PLACES=317, PETRI_TRANSITIONS=581} [2024-01-30 14:20:59,446 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 245 predicate places. [2024-01-30 14:20:59,447 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 581 transitions, 17131 flow [2024-01-30 14:20:59,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:59,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:59,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:20:59,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-01-30 14:20:59,447 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:59,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:59,447 INFO L85 PathProgramCache]: Analyzing trace with hash 152075714, now seen corresponding path program 3 times [2024-01-30 14:20:59,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:59,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696092963] [2024-01-30 14:20:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:59,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:59,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:59,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:59,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696092963] [2024-01-30 14:20:59,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696092963] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:59,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:59,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:20:59,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844433052] [2024-01-30 14:20:59,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:59,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:20:59,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:59,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:20:59,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:20:59,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:59,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 581 transitions, 17131 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:59,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:59,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:59,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:01,122 INFO L124 PetriNetUnfolderBase]: 2693/5510 cut-off events. [2024-01-30 14:21:01,122 INFO L125 PetriNetUnfolderBase]: For 330137/331003 co-relation queries the response was YES. [2024-01-30 14:21:01,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60158 conditions, 5510 events. 2693/5510 cut-off events. For 330137/331003 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 43522 event pairs, 401 based on Foata normal form. 76/5468 useless extension candidates. Maximal degree in co-relation 60028. Up to 2446 conditions per place. [2024-01-30 14:21:01,190 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 406 selfloop transitions, 179 changer transitions 2/627 dead transitions. [2024-01-30 14:21:01,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 627 transitions, 19199 flow [2024-01-30 14:21:01,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:01,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:01,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-01-30 14:21:01,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42436974789915966 [2024-01-30 14:21:01,191 INFO L175 Difference]: Start difference. First operand has 317 places, 581 transitions, 17131 flow. Second operand 7 states and 202 transitions. [2024-01-30 14:21:01,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 627 transitions, 19199 flow [2024-01-30 14:21:02,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 627 transitions, 18963 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:21:02,045 INFO L231 Difference]: Finished difference. Result has 321 places, 591 transitions, 17703 flow [2024-01-30 14:21:02,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16909, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17703, PETRI_PLACES=321, PETRI_TRANSITIONS=591} [2024-01-30 14:21:02,045 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 249 predicate places. [2024-01-30 14:21:02,045 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 591 transitions, 17703 flow [2024-01-30 14:21:02,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:02,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:02,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:02,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-01-30 14:21:02,046 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:02,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:02,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1452805058, now seen corresponding path program 4 times [2024-01-30 14:21:02,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:02,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718069716] [2024-01-30 14:21:02,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:02,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:02,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:02,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718069716] [2024-01-30 14:21:02,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718069716] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:02,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:02,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:21:02,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719239670] [2024-01-30 14:21:02,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:02,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:21:02,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:02,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:21:02,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:21:02,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:02,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 591 transitions, 17703 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:02,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:02,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:02,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:03,715 INFO L124 PetriNetUnfolderBase]: 2775/5626 cut-off events. [2024-01-30 14:21:03,716 INFO L125 PetriNetUnfolderBase]: For 347908/348840 co-relation queries the response was YES. [2024-01-30 14:21:03,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61828 conditions, 5626 events. 2775/5626 cut-off events. For 347908/348840 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 44175 event pairs, 482 based on Foata normal form. 76/5581 useless extension candidates. Maximal degree in co-relation 61696. Up to 2472 conditions per place. [2024-01-30 14:21:03,787 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 385 selfloop transitions, 206 changer transitions 2/633 dead transitions. [2024-01-30 14:21:03,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 633 transitions, 19525 flow [2024-01-30 14:21:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:03,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-01-30 14:21:03,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43487394957983194 [2024-01-30 14:21:03,788 INFO L175 Difference]: Start difference. First operand has 321 places, 591 transitions, 17703 flow. Second operand 7 states and 207 transitions. [2024-01-30 14:21:03,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 633 transitions, 19525 flow [2024-01-30 14:21:04,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 633 transitions, 19382 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:21:04,644 INFO L231 Difference]: Finished difference. Result has 327 places, 599 transitions, 18233 flow [2024-01-30 14:21:04,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=17564, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18233, PETRI_PLACES=327, PETRI_TRANSITIONS=599} [2024-01-30 14:21:04,645 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 255 predicate places. [2024-01-30 14:21:04,645 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 599 transitions, 18233 flow [2024-01-30 14:21:04,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:04,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:04,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:04,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-01-30 14:21:04,645 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:04,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:04,645 INFO L85 PathProgramCache]: Analyzing trace with hash -357766202, now seen corresponding path program 5 times [2024-01-30 14:21:04,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:04,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429501670] [2024-01-30 14:21:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:04,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:04,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:04,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429501670] [2024-01-30 14:21:04,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429501670] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:04,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:04,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:21:04,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564686775] [2024-01-30 14:21:04,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:04,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:21:04,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:04,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:21:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:21:04,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:04,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 599 transitions, 18233 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:04,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:04,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:04,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:06,438 INFO L124 PetriNetUnfolderBase]: 2745/5588 cut-off events. [2024-01-30 14:21:06,439 INFO L125 PetriNetUnfolderBase]: For 364319/365223 co-relation queries the response was YES. [2024-01-30 14:21:06,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62734 conditions, 5588 events. 2745/5588 cut-off events. For 364319/365223 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 44149 event pairs, 423 based on Foata normal form. 76/5546 useless extension candidates. Maximal degree in co-relation 62600. Up to 2462 conditions per place. [2024-01-30 14:21:06,510 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 416 selfloop transitions, 194 changer transitions 2/652 dead transitions. [2024-01-30 14:21:06,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 652 transitions, 20364 flow [2024-01-30 14:21:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:06,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:06,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-01-30 14:21:06,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43907563025210083 [2024-01-30 14:21:06,511 INFO L175 Difference]: Start difference. First operand has 327 places, 599 transitions, 18233 flow. Second operand 7 states and 209 transitions. [2024-01-30 14:21:06,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 652 transitions, 20364 flow [2024-01-30 14:21:07,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 652 transitions, 19958 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-01-30 14:21:07,598 INFO L231 Difference]: Finished difference. Result has 329 places, 599 transitions, 18286 flow [2024-01-30 14:21:07,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=17887, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18286, PETRI_PLACES=329, PETRI_TRANSITIONS=599} [2024-01-30 14:21:07,599 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 257 predicate places. [2024-01-30 14:21:07,599 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 599 transitions, 18286 flow [2024-01-30 14:21:07,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:07,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:07,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:07,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-01-30 14:21:07,600 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:07,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:07,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1540984458, now seen corresponding path program 6 times [2024-01-30 14:21:07,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:07,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189893400] [2024-01-30 14:21:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:07,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:07,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:07,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189893400] [2024-01-30 14:21:07,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189893400] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:07,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:07,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:21:07,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365244633] [2024-01-30 14:21:07,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:07,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:21:07,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:07,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:21:07,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:21:07,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:07,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 599 transitions, 18286 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:07,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:07,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:07,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:09,351 INFO L124 PetriNetUnfolderBase]: 2719/5550 cut-off events. [2024-01-30 14:21:09,351 INFO L125 PetriNetUnfolderBase]: For 367533/368427 co-relation queries the response was YES. [2024-01-30 14:21:09,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62065 conditions, 5550 events. 2719/5550 cut-off events. For 367533/368427 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 43863 event pairs, 396 based on Foata normal form. 76/5508 useless extension candidates. Maximal degree in co-relation 61930. Up to 2454 conditions per place. [2024-01-30 14:21:09,426 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 408 selfloop transitions, 199 changer transitions 2/649 dead transitions. [2024-01-30 14:21:09,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 649 transitions, 20293 flow [2024-01-30 14:21:09,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-01-30 14:21:09,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2024-01-30 14:21:09,428 INFO L175 Difference]: Start difference. First operand has 329 places, 599 transitions, 18286 flow. Second operand 7 states and 210 transitions. [2024-01-30 14:21:09,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 649 transitions, 20293 flow [2024-01-30 14:21:10,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 649 transitions, 20032 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-30 14:21:10,341 INFO L231 Difference]: Finished difference. Result has 331 places, 599 transitions, 18434 flow [2024-01-30 14:21:10,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18025, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18434, PETRI_PLACES=331, PETRI_TRANSITIONS=599} [2024-01-30 14:21:10,341 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 259 predicate places. [2024-01-30 14:21:10,341 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 599 transitions, 18434 flow [2024-01-30 14:21:10,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:10,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:10,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:10,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-01-30 14:21:10,342 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:10,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:10,342 INFO L85 PathProgramCache]: Analyzing trace with hash -372973562, now seen corresponding path program 7 times [2024-01-30 14:21:10,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:10,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258229489] [2024-01-30 14:21:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:10,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:10,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:10,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258229489] [2024-01-30 14:21:10,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258229489] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:10,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:10,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:21:10,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301261440] [2024-01-30 14:21:10,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:10,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:21:10,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:10,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:21:10,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:21:10,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:10,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 599 transitions, 18434 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:10,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:10,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:10,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:12,167 INFO L124 PetriNetUnfolderBase]: 2709/5528 cut-off events. [2024-01-30 14:21:12,167 INFO L125 PetriNetUnfolderBase]: For 377687/378591 co-relation queries the response was YES. [2024-01-30 14:21:12,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61984 conditions, 5528 events. 2709/5528 cut-off events. For 377687/378591 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 43680 event pairs, 413 based on Foata normal form. 68/5478 useless extension candidates. Maximal degree in co-relation 61848. Up to 2450 conditions per place. [2024-01-30 14:21:12,233 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 394 selfloop transitions, 205 changer transitions 2/641 dead transitions. [2024-01-30 14:21:12,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 641 transitions, 20227 flow [2024-01-30 14:21:12,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-01-30 14:21:12,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327731092436975 [2024-01-30 14:21:12,234 INFO L175 Difference]: Start difference. First operand has 331 places, 599 transitions, 18434 flow. Second operand 7 states and 206 transitions. [2024-01-30 14:21:12,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 641 transitions, 20227 flow [2024-01-30 14:21:13,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 641 transitions, 19827 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-30 14:21:13,144 INFO L231 Difference]: Finished difference. Result has 332 places, 599 transitions, 18459 flow [2024-01-30 14:21:13,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18034, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18459, PETRI_PLACES=332, PETRI_TRANSITIONS=599} [2024-01-30 14:21:13,144 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 260 predicate places. [2024-01-30 14:21:13,144 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 599 transitions, 18459 flow [2024-01-30 14:21:13,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:13,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:13,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:13,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-01-30 14:21:13,145 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:13,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:13,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1985708744, now seen corresponding path program 1 times [2024-01-30 14:21:13,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:13,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432928226] [2024-01-30 14:21:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:13,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:13,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:13,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432928226] [2024-01-30 14:21:13,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432928226] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:13,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:13,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:21:13,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048505313] [2024-01-30 14:21:13,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:13,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:21:13,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:13,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:21:13,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:21:13,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:13,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 599 transitions, 18459 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:13,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:13,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:13,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:14,913 INFO L124 PetriNetUnfolderBase]: 2663/5483 cut-off events. [2024-01-30 14:21:14,913 INFO L125 PetriNetUnfolderBase]: For 364981/365687 co-relation queries the response was YES. [2024-01-30 14:21:14,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61468 conditions, 5483 events. 2663/5483 cut-off events. For 364981/365687 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 43129 event pairs, 301 based on Foata normal form. 63/5408 useless extension candidates. Maximal degree in co-relation 61332. Up to 2379 conditions per place. [2024-01-30 14:21:14,988 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 408 selfloop transitions, 194 changer transitions 2/647 dead transitions. [2024-01-30 14:21:14,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 647 transitions, 20364 flow [2024-01-30 14:21:14,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:14,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-01-30 14:21:14,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43907563025210083 [2024-01-30 14:21:14,989 INFO L175 Difference]: Start difference. First operand has 332 places, 599 transitions, 18459 flow. Second operand 7 states and 209 transitions. [2024-01-30 14:21:14,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 647 transitions, 20364 flow [2024-01-30 14:21:15,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 647 transitions, 19941 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-30 14:21:16,003 INFO L231 Difference]: Finished difference. Result has 333 places, 599 transitions, 18435 flow [2024-01-30 14:21:16,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18036, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18435, PETRI_PLACES=333, PETRI_TRANSITIONS=599} [2024-01-30 14:21:16,003 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 261 predicate places. [2024-01-30 14:21:16,003 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 599 transitions, 18435 flow [2024-01-30 14:21:16,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:16,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:16,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:16,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-01-30 14:21:16,004 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:16,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:16,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2012216604, now seen corresponding path program 2 times [2024-01-30 14:21:16,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:16,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123445399] [2024-01-30 14:21:16,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:16,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:16,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:16,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123445399] [2024-01-30 14:21:16,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123445399] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:16,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:16,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:21:16,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438452117] [2024-01-30 14:21:16,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:16,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:21:16,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:16,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:21:16,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:21:16,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:16,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 599 transitions, 18435 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:16,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:16,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:16,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:17,734 INFO L124 PetriNetUnfolderBase]: 2649/5464 cut-off events. [2024-01-30 14:21:17,734 INFO L125 PetriNetUnfolderBase]: For 363813/364520 co-relation queries the response was YES. [2024-01-30 14:21:17,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61397 conditions, 5464 events. 2649/5464 cut-off events. For 363813/364520 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 43067 event pairs, 332 based on Foata normal form. 63/5389 useless extension candidates. Maximal degree in co-relation 61260. Up to 2375 conditions per place. [2024-01-30 14:21:17,807 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 403 selfloop transitions, 198 changer transitions 2/646 dead transitions. [2024-01-30 14:21:17,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 646 transitions, 20306 flow [2024-01-30 14:21:17,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:17,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-01-30 14:21:17,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327731092436975 [2024-01-30 14:21:17,808 INFO L175 Difference]: Start difference. First operand has 333 places, 599 transitions, 18435 flow. Second operand 7 states and 206 transitions. [2024-01-30 14:21:17,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 646 transitions, 20306 flow [2024-01-30 14:21:18,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 646 transitions, 20036 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-30 14:21:18,832 INFO L231 Difference]: Finished difference. Result has 335 places, 599 transitions, 18572 flow [2024-01-30 14:21:18,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18165, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18572, PETRI_PLACES=335, PETRI_TRANSITIONS=599} [2024-01-30 14:21:18,833 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 263 predicate places. [2024-01-30 14:21:18,833 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 599 transitions, 18572 flow [2024-01-30 14:21:18,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:18,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:18,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:18,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-01-30 14:21:18,833 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:18,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:18,833 INFO L85 PathProgramCache]: Analyzing trace with hash -132085352, now seen corresponding path program 3 times [2024-01-30 14:21:18,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:18,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132104387] [2024-01-30 14:21:18,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:18,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:18,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:18,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132104387] [2024-01-30 14:21:18,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132104387] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:18,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:18,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:21:18,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028843640] [2024-01-30 14:21:18,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:18,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:21:18,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:18,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:21:18,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:21:18,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:18,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 599 transitions, 18572 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:18,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:18,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:18,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:20,673 INFO L124 PetriNetUnfolderBase]: 2639/5443 cut-off events. [2024-01-30 14:21:20,673 INFO L125 PetriNetUnfolderBase]: For 373818/374520 co-relation queries the response was YES. [2024-01-30 14:21:20,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61424 conditions, 5443 events. 2639/5443 cut-off events. For 373818/374520 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 42818 event pairs, 305 based on Foata normal form. 61/5363 useless extension candidates. Maximal degree in co-relation 61286. Up to 2371 conditions per place. [2024-01-30 14:21:20,748 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 385 selfloop transitions, 208 changer transitions 2/638 dead transitions. [2024-01-30 14:21:20,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 638 transitions, 20297 flow [2024-01-30 14:21:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-01-30 14:21:20,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327731092436975 [2024-01-30 14:21:20,749 INFO L175 Difference]: Start difference. First operand has 335 places, 599 transitions, 18572 flow. Second operand 7 states and 206 transitions. [2024-01-30 14:21:20,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 638 transitions, 20297 flow [2024-01-30 14:21:21,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 638 transitions, 19899 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-30 14:21:21,804 INFO L231 Difference]: Finished difference. Result has 336 places, 599 transitions, 18605 flow [2024-01-30 14:21:21,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18174, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18605, PETRI_PLACES=336, PETRI_TRANSITIONS=599} [2024-01-30 14:21:21,805 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 264 predicate places. [2024-01-30 14:21:21,805 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 599 transitions, 18605 flow [2024-01-30 14:21:21,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:21,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:21,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:21,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-01-30 14:21:21,805 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:21,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:21,805 INFO L85 PathProgramCache]: Analyzing trace with hash -395020068, now seen corresponding path program 4 times [2024-01-30 14:21:21,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:21,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593059800] [2024-01-30 14:21:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:21,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:21,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:21,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:21,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593059800] [2024-01-30 14:21:21,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593059800] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:21,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:21,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:21:21,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572617452] [2024-01-30 14:21:21,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:21,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:21:21,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:21:21,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:21:21,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:21,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 599 transitions, 18605 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:21,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:21,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:21,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:23,567 INFO L124 PetriNetUnfolderBase]: 2613/5401 cut-off events. [2024-01-30 14:21:23,567 INFO L125 PetriNetUnfolderBase]: For 374679/375382 co-relation queries the response was YES. [2024-01-30 14:21:23,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61274 conditions, 5401 events. 2613/5401 cut-off events. For 374679/375382 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 42500 event pairs, 318 based on Foata normal form. 69/5329 useless extension candidates. Maximal degree in co-relation 61136. Up to 2363 conditions per place. [2024-01-30 14:21:23,641 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 371 selfloop transitions, 227 changer transitions 2/643 dead transitions. [2024-01-30 14:21:23,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 643 transitions, 20362 flow [2024-01-30 14:21:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-01-30 14:21:23,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453781512605042 [2024-01-30 14:21:23,642 INFO L175 Difference]: Start difference. First operand has 336 places, 599 transitions, 18605 flow. Second operand 7 states and 216 transitions. [2024-01-30 14:21:23,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 643 transitions, 20362 flow [2024-01-30 14:21:24,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 643 transitions, 20045 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-30 14:21:24,720 INFO L231 Difference]: Finished difference. Result has 338 places, 599 transitions, 18799 flow [2024-01-30 14:21:24,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18288, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18799, PETRI_PLACES=338, PETRI_TRANSITIONS=599} [2024-01-30 14:21:24,720 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 266 predicate places. [2024-01-30 14:21:24,720 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 599 transitions, 18799 flow [2024-01-30 14:21:24,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:24,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:24,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:24,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-01-30 14:21:24,721 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:24,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:24,721 INFO L85 PathProgramCache]: Analyzing trace with hash -394099368, now seen corresponding path program 5 times [2024-01-30 14:21:24,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:24,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719140548] [2024-01-30 14:21:24,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:24,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:24,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:24,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719140548] [2024-01-30 14:21:24,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719140548] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:24,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:24,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:21:24,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587782090] [2024-01-30 14:21:24,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:24,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:21:24,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:24,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:21:24,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:21:24,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:24,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 599 transitions, 18799 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:24,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:24,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:24,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:26,576 INFO L124 PetriNetUnfolderBase]: 2599/5375 cut-off events. [2024-01-30 14:21:26,576 INFO L125 PetriNetUnfolderBase]: For 387880/388586 co-relation queries the response was YES. [2024-01-30 14:21:26,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61397 conditions, 5375 events. 2599/5375 cut-off events. For 387880/388586 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 42250 event pairs, 331 based on Foata normal form. 65/5299 useless extension candidates. Maximal degree in co-relation 61258. Up to 2357 conditions per place. [2024-01-30 14:21:26,654 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 386 selfloop transitions, 209 changer transitions 2/640 dead transitions. [2024-01-30 14:21:26,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 640 transitions, 20528 flow [2024-01-30 14:21:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:26,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:26,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-01-30 14:21:26,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44537815126050423 [2024-01-30 14:21:26,655 INFO L175 Difference]: Start difference. First operand has 338 places, 599 transitions, 18799 flow. Second operand 7 states and 212 transitions. [2024-01-30 14:21:26,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 640 transitions, 20528 flow [2024-01-30 14:21:27,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 640 transitions, 19843 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-30 14:21:27,794 INFO L231 Difference]: Finished difference. Result has 337 places, 599 transitions, 18545 flow [2024-01-30 14:21:27,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18114, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18545, PETRI_PLACES=337, PETRI_TRANSITIONS=599} [2024-01-30 14:21:27,794 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 265 predicate places. [2024-01-30 14:21:27,795 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 599 transitions, 18545 flow [2024-01-30 14:21:27,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:27,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:27,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:27,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-01-30 14:21:27,795 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:27,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:27,795 INFO L85 PathProgramCache]: Analyzing trace with hash 633690132, now seen corresponding path program 6 times [2024-01-30 14:21:27,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:27,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867658019] [2024-01-30 14:21:27,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:27,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:27,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:27,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867658019] [2024-01-30 14:21:27,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867658019] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:27,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:27,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:21:27,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211964339] [2024-01-30 14:21:27,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:27,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:21:27,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:27,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:21:27,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:21:27,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:27,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 599 transitions, 18545 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:27,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:27,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:27,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:29,641 INFO L124 PetriNetUnfolderBase]: 2653/5484 cut-off events. [2024-01-30 14:21:29,642 INFO L125 PetriNetUnfolderBase]: For 376318/377014 co-relation queries the response was YES. [2024-01-30 14:21:29,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62176 conditions, 5484 events. 2653/5484 cut-off events. For 376318/377014 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 43171 event pairs, 312 based on Foata normal form. 69/5412 useless extension candidates. Maximal degree in co-relation 62038. Up to 2379 conditions per place. [2024-01-30 14:21:29,720 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 410 selfloop transitions, 190 changer transitions 2/645 dead transitions. [2024-01-30 14:21:29,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 645 transitions, 20589 flow [2024-01-30 14:21:29,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-01-30 14:21:29,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42436974789915966 [2024-01-30 14:21:29,721 INFO L175 Difference]: Start difference. First operand has 337 places, 599 transitions, 18545 flow. Second operand 7 states and 202 transitions. [2024-01-30 14:21:29,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 645 transitions, 20589 flow [2024-01-30 14:21:30,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 645 transitions, 20234 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-30 14:21:30,825 INFO L231 Difference]: Finished difference. Result has 340 places, 609 transitions, 19016 flow [2024-01-30 14:21:30,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18204, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19016, PETRI_PLACES=340, PETRI_TRANSITIONS=609} [2024-01-30 14:21:30,826 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 268 predicate places. [2024-01-30 14:21:30,826 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 609 transitions, 19016 flow [2024-01-30 14:21:30,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:30,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:30,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:30,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-01-30 14:21:30,827 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:30,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:30,827 INFO L85 PathProgramCache]: Analyzing trace with hash 670494968, now seen corresponding path program 3 times [2024-01-30 14:21:30,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:30,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152216693] [2024-01-30 14:21:30,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:30,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:31,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:31,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152216693] [2024-01-30 14:21:31,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152216693] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:31,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:31,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:21:31,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856619932] [2024-01-30 14:21:31,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:31,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:21:31,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:31,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:21:31,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:21:31,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:31,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 609 transitions, 19016 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:31,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:31,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:31,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:32,823 INFO L124 PetriNetUnfolderBase]: 2695/5504 cut-off events. [2024-01-30 14:21:32,823 INFO L125 PetriNetUnfolderBase]: For 396547/397309 co-relation queries the response was YES. [2024-01-30 14:21:32,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63445 conditions, 5504 events. 2695/5504 cut-off events. For 396547/397309 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 43217 event pairs, 939 based on Foata normal form. 108/5458 useless extension candidates. Maximal degree in co-relation 63305. Up to 2689 conditions per place. [2024-01-30 14:21:32,901 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 412 selfloop transitions, 184 changer transitions 0/639 dead transitions. [2024-01-30 14:21:32,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 639 transitions, 20681 flow [2024-01-30 14:21:32,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:32,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:32,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-01-30 14:21:32,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42016806722689076 [2024-01-30 14:21:32,901 INFO L175 Difference]: Start difference. First operand has 340 places, 609 transitions, 19016 flow. Second operand 7 states and 200 transitions. [2024-01-30 14:21:32,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 639 transitions, 20681 flow [2024-01-30 14:21:33,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 639 transitions, 20520 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:21:33,910 INFO L231 Difference]: Finished difference. Result has 344 places, 610 transitions, 19260 flow [2024-01-30 14:21:33,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18855, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19260, PETRI_PLACES=344, PETRI_TRANSITIONS=610} [2024-01-30 14:21:33,911 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 272 predicate places. [2024-01-30 14:21:33,911 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 610 transitions, 19260 flow [2024-01-30 14:21:33,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:33,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:33,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:33,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-01-30 14:21:33,911 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:33,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:33,912 INFO L85 PathProgramCache]: Analyzing trace with hash -104788196, now seen corresponding path program 4 times [2024-01-30 14:21:33,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:33,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960723049] [2024-01-30 14:21:33,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:33,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:34,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:34,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960723049] [2024-01-30 14:21:34,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960723049] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:34,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:34,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:21:34,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491909623] [2024-01-30 14:21:34,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:34,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:21:34,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:34,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:21:34,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:21:34,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:34,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 610 transitions, 19260 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:34,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:34,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:34,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:35,878 INFO L124 PetriNetUnfolderBase]: 2698/5534 cut-off events. [2024-01-30 14:21:35,878 INFO L125 PetriNetUnfolderBase]: For 408098/408860 co-relation queries the response was YES. [2024-01-30 14:21:35,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63793 conditions, 5534 events. 2698/5534 cut-off events. For 408098/408860 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 43781 event pairs, 945 based on Foata normal form. 110/5490 useless extension candidates. Maximal degree in co-relation 63652. Up to 2696 conditions per place. [2024-01-30 14:21:35,959 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 404 selfloop transitions, 202 changer transitions 0/649 dead transitions. [2024-01-30 14:21:35,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 649 transitions, 21128 flow [2024-01-30 14:21:35,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:35,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-01-30 14:21:35,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43907563025210083 [2024-01-30 14:21:35,960 INFO L175 Difference]: Start difference. First operand has 344 places, 610 transitions, 19260 flow. Second operand 7 states and 209 transitions. [2024-01-30 14:21:35,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 649 transitions, 21128 flow [2024-01-30 14:21:37,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 649 transitions, 20564 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-01-30 14:21:37,093 INFO L231 Difference]: Finished difference. Result has 342 places, 612 transitions, 19156 flow [2024-01-30 14:21:37,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18700, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19156, PETRI_PLACES=342, PETRI_TRANSITIONS=612} [2024-01-30 14:21:37,093 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 270 predicate places. [2024-01-30 14:21:37,093 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 612 transitions, 19156 flow [2024-01-30 14:21:37,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:37,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:37,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:37,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-01-30 14:21:37,094 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:37,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:37,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1218553876, now seen corresponding path program 5 times [2024-01-30 14:21:37,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:37,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022213674] [2024-01-30 14:21:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:37,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:37,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:37,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022213674] [2024-01-30 14:21:37,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022213674] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:37,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:37,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:21:37,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576693528] [2024-01-30 14:21:37,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:37,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:21:37,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:37,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:21:37,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:21:37,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:37,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 612 transitions, 19156 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:37,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:37,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:37,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:38,959 INFO L124 PetriNetUnfolderBase]: 2715/5559 cut-off events. [2024-01-30 14:21:38,959 INFO L125 PetriNetUnfolderBase]: For 394812/395581 co-relation queries the response was YES. [2024-01-30 14:21:39,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63943 conditions, 5559 events. 2715/5559 cut-off events. For 394812/395581 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 44002 event pairs, 938 based on Foata normal form. 90/5488 useless extension candidates. Maximal degree in co-relation 63803. Up to 2707 conditions per place. [2024-01-30 14:21:39,032 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 406 selfloop transitions, 196 changer transitions 0/645 dead transitions. [2024-01-30 14:21:39,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 645 transitions, 20867 flow [2024-01-30 14:21:39,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:39,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:39,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-01-30 14:21:39,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42436974789915966 [2024-01-30 14:21:39,033 INFO L175 Difference]: Start difference. First operand has 342 places, 612 transitions, 19156 flow. Second operand 7 states and 202 transitions. [2024-01-30 14:21:39,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 645 transitions, 20867 flow [2024-01-30 14:21:40,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 645 transitions, 20469 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-01-30 14:21:40,101 INFO L231 Difference]: Finished difference. Result has 338 places, 615 transitions, 19282 flow [2024-01-30 14:21:40,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18738, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19282, PETRI_PLACES=338, PETRI_TRANSITIONS=615} [2024-01-30 14:21:40,102 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 266 predicate places. [2024-01-30 14:21:40,102 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 615 transitions, 19282 flow [2024-01-30 14:21:40,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:40,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:40,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:40,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-01-30 14:21:40,102 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:40,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:40,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2074487094, now seen corresponding path program 7 times [2024-01-30 14:21:40,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:40,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406098054] [2024-01-30 14:21:40,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:40,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:40,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:40,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406098054] [2024-01-30 14:21:40,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406098054] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:40,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:40,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:21:40,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589564900] [2024-01-30 14:21:40,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:40,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:21:40,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:40,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:21:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:21:40,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:40,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 615 transitions, 19282 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:40,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:40,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:40,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:41,974 INFO L124 PetriNetUnfolderBase]: 2755/5625 cut-off events. [2024-01-30 14:21:41,974 INFO L125 PetriNetUnfolderBase]: For 399211/399912 co-relation queries the response was YES. [2024-01-30 14:21:42,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64422 conditions, 5625 events. 2755/5625 cut-off events. For 399211/399912 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 44243 event pairs, 442 based on Foata normal form. 63/5515 useless extension candidates. Maximal degree in co-relation 64287. Up to 2449 conditions per place. [2024-01-30 14:21:42,054 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 389 selfloop transitions, 217 changer transitions 2/651 dead transitions. [2024-01-30 14:21:42,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 651 transitions, 21013 flow [2024-01-30 14:21:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:42,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-01-30 14:21:42,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42016806722689076 [2024-01-30 14:21:42,055 INFO L175 Difference]: Start difference. First operand has 338 places, 615 transitions, 19282 flow. Second operand 7 states and 200 transitions. [2024-01-30 14:21:42,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 651 transitions, 21013 flow [2024-01-30 14:21:43,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 651 transitions, 20711 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-30 14:21:43,235 INFO L231 Difference]: Finished difference. Result has 342 places, 623 transitions, 19687 flow [2024-01-30 14:21:43,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18984, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19687, PETRI_PLACES=342, PETRI_TRANSITIONS=623} [2024-01-30 14:21:43,236 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 270 predicate places. [2024-01-30 14:21:43,236 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 623 transitions, 19687 flow [2024-01-30 14:21:43,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:43,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:43,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:43,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-01-30 14:21:43,237 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:43,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:43,237 INFO L85 PathProgramCache]: Analyzing trace with hash 943711455, now seen corresponding path program 1 times [2024-01-30 14:21:43,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:43,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172518935] [2024-01-30 14:21:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:43,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:43,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:43,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172518935] [2024-01-30 14:21:43,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172518935] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:43,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:43,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:21:43,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992772159] [2024-01-30 14:21:43,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:43,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:21:43,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:43,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:21:43,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:21:43,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:43,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 623 transitions, 19687 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:43,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:43,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:43,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:45,189 INFO L124 PetriNetUnfolderBase]: 2750/5646 cut-off events. [2024-01-30 14:21:45,190 INFO L125 PetriNetUnfolderBase]: For 412373/413122 co-relation queries the response was YES. [2024-01-30 14:21:45,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66064 conditions, 5646 events. 2750/5646 cut-off events. For 412373/413122 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 44677 event pairs, 681 based on Foata normal form. 79/5575 useless extension candidates. Maximal degree in co-relation 65927. Up to 2424 conditions per place. [2024-01-30 14:21:45,276 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 381 selfloop transitions, 217 changer transitions 17/655 dead transitions. [2024-01-30 14:21:45,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 655 transitions, 21381 flow [2024-01-30 14:21:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-01-30 14:21:45,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41386554621848737 [2024-01-30 14:21:45,277 INFO L175 Difference]: Start difference. First operand has 342 places, 623 transitions, 19687 flow. Second operand 7 states and 197 transitions. [2024-01-30 14:21:45,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 655 transitions, 21381 flow [2024-01-30 14:21:46,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 655 transitions, 20944 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-01-30 14:21:46,461 INFO L231 Difference]: Finished difference. Result has 343 places, 607 transitions, 19328 flow [2024-01-30 14:21:46,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=19250, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19328, PETRI_PLACES=343, PETRI_TRANSITIONS=607} [2024-01-30 14:21:46,462 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 271 predicate places. [2024-01-30 14:21:46,462 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 607 transitions, 19328 flow [2024-01-30 14:21:46,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:46,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:46,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:46,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-01-30 14:21:46,462 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:46,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1594530557, now seen corresponding path program 2 times [2024-01-30 14:21:46,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:46,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807728087] [2024-01-30 14:21:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:46,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:46,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:46,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807728087] [2024-01-30 14:21:46,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807728087] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:46,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:46,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:21:46,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590769600] [2024-01-30 14:21:46,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:46,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:21:46,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:46,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:21:46,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:21:46,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:46,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 607 transitions, 19328 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:46,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:46,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:46,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:48,373 INFO L124 PetriNetUnfolderBase]: 2632/5453 cut-off events. [2024-01-30 14:21:48,373 INFO L125 PetriNetUnfolderBase]: For 402220/402987 co-relation queries the response was YES. [2024-01-30 14:21:48,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63418 conditions, 5453 events. 2632/5453 cut-off events. For 402220/402987 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 43271 event pairs, 668 based on Foata normal form. 71/5388 useless extension candidates. Maximal degree in co-relation 63281. Up to 2424 conditions per place. [2024-01-30 14:21:48,446 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 415 selfloop transitions, 164 changer transitions 22/639 dead transitions. [2024-01-30 14:21:48,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 639 transitions, 20987 flow [2024-01-30 14:21:48,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:48,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-01-30 14:21:48,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41596638655462187 [2024-01-30 14:21:48,447 INFO L175 Difference]: Start difference. First operand has 343 places, 607 transitions, 19328 flow. Second operand 7 states and 198 transitions. [2024-01-30 14:21:48,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 639 transitions, 20987 flow [2024-01-30 14:21:49,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 639 transitions, 20492 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-30 14:21:49,456 INFO L231 Difference]: Finished difference. Result has 343 places, 585 transitions, 18633 flow [2024-01-30 14:21:49,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18837, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18633, PETRI_PLACES=343, PETRI_TRANSITIONS=585} [2024-01-30 14:21:49,457 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 271 predicate places. [2024-01-30 14:21:49,457 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 585 transitions, 18633 flow [2024-01-30 14:21:49,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:49,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:49,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:49,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-01-30 14:21:49,458 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:49,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:49,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1535116629, now seen corresponding path program 3 times [2024-01-30 14:21:49,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:49,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893290597] [2024-01-30 14:21:49,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:49,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:49,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:49,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893290597] [2024-01-30 14:21:49,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893290597] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:49,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:49,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:21:49,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682721971] [2024-01-30 14:21:49,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:49,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:21:49,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:49,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:21:49,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:21:49,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:49,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 585 transitions, 18633 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:49,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:49,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:49,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:51,359 INFO L124 PetriNetUnfolderBase]: 2580/5415 cut-off events. [2024-01-30 14:21:51,359 INFO L125 PetriNetUnfolderBase]: For 390114/390851 co-relation queries the response was YES. [2024-01-30 14:21:51,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62468 conditions, 5415 events. 2580/5415 cut-off events. For 390114/390851 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 43363 event pairs, 705 based on Foata normal form. 65/5335 useless extension candidates. Maximal degree in co-relation 62332. Up to 2868 conditions per place. [2024-01-30 14:21:51,436 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 453 selfloop transitions, 104 changer transitions 22/617 dead transitions. [2024-01-30 14:21:51,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 617 transitions, 20281 flow [2024-01-30 14:21:51,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:51,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:51,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-01-30 14:21:51,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-01-30 14:21:51,439 INFO L175 Difference]: Start difference. First operand has 343 places, 585 transitions, 18633 flow. Second operand 7 states and 187 transitions. [2024-01-30 14:21:51,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 617 transitions, 20281 flow [2024-01-30 14:21:52,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 617 transitions, 19890 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-01-30 14:21:52,494 INFO L231 Difference]: Finished difference. Result has 341 places, 569 transitions, 17999 flow [2024-01-30 14:21:52,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18250, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17999, PETRI_PLACES=341, PETRI_TRANSITIONS=569} [2024-01-30 14:21:52,495 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 269 predicate places. [2024-01-30 14:21:52,495 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 569 transitions, 17999 flow [2024-01-30 14:21:52,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:52,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:52,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:52,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-01-30 14:21:52,495 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:52,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1364542863, now seen corresponding path program 4 times [2024-01-30 14:21:52,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:52,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786266962] [2024-01-30 14:21:52,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:52,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:52,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:52,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786266962] [2024-01-30 14:21:52,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786266962] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:52,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:52,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:21:52,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127150462] [2024-01-30 14:21:52,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:52,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:21:52,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:52,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:21:52,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:21:52,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:52,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 569 transitions, 17999 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:52,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:52,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:52,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:54,252 INFO L124 PetriNetUnfolderBase]: 2554/5309 cut-off events. [2024-01-30 14:21:54,253 INFO L125 PetriNetUnfolderBase]: For 378953/379703 co-relation queries the response was YES. [2024-01-30 14:21:54,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60807 conditions, 5309 events. 2554/5309 cut-off events. For 378953/379703 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 41853 event pairs, 713 based on Foata normal form. 62/5211 useless extension candidates. Maximal degree in co-relation 60673. Up to 2387 conditions per place. [2024-01-30 14:21:54,328 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 406 selfloop transitions, 135 changer transitions 17/596 dead transitions. [2024-01-30 14:21:54,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 596 transitions, 19463 flow [2024-01-30 14:21:54,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-01-30 14:21:54,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40336134453781514 [2024-01-30 14:21:54,329 INFO L175 Difference]: Start difference. First operand has 341 places, 569 transitions, 17999 flow. Second operand 7 states and 192 transitions. [2024-01-30 14:21:54,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 596 transitions, 19463 flow [2024-01-30 14:21:55,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 596 transitions, 19184 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-30 14:21:55,274 INFO L231 Difference]: Finished difference. Result has 342 places, 556 transitions, 17738 flow [2024-01-30 14:21:55,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=17720, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17738, PETRI_PLACES=342, PETRI_TRANSITIONS=556} [2024-01-30 14:21:55,275 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 270 predicate places. [2024-01-30 14:21:55,275 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 556 transitions, 17738 flow [2024-01-30 14:21:55,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:55,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:55,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:55,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-01-30 14:21:55,276 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:55,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:55,276 INFO L85 PathProgramCache]: Analyzing trace with hash 295883477, now seen corresponding path program 5 times [2024-01-30 14:21:55,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:55,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821643882] [2024-01-30 14:21:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:55,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:55,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:55,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821643882] [2024-01-30 14:21:55,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821643882] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:55,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:55,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:21:55,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145540599] [2024-01-30 14:21:55,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:55,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:21:55,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:55,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:21:55,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:21:55,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:55,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 556 transitions, 17738 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:55,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:55,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:55,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:57,101 INFO L124 PetriNetUnfolderBase]: 2520/5291 cut-off events. [2024-01-30 14:21:57,101 INFO L125 PetriNetUnfolderBase]: For 373049/373846 co-relation queries the response was YES. [2024-01-30 14:21:57,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61541 conditions, 5291 events. 2520/5291 cut-off events. For 373049/373846 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 42068 event pairs, 655 based on Foata normal form. 77/5235 useless extension candidates. Maximal degree in co-relation 61405. Up to 2214 conditions per place. [2024-01-30 14:21:57,184 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 429 selfloop transitions, 132 changer transitions 6/605 dead transitions. [2024-01-30 14:21:57,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 605 transitions, 19716 flow [2024-01-30 14:21:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:21:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:21:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-01-30 14:21:57,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180672268907563 [2024-01-30 14:21:57,185 INFO L175 Difference]: Start difference. First operand has 342 places, 556 transitions, 17738 flow. Second operand 7 states and 199 transitions. [2024-01-30 14:21:57,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 605 transitions, 19716 flow [2024-01-30 14:21:58,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 605 transitions, 18990 flow, removed 35 selfloop flow, removed 12 redundant places. [2024-01-30 14:21:58,241 INFO L231 Difference]: Finished difference. Result has 338 places, 553 transitions, 17317 flow [2024-01-30 14:21:58,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=17045, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17317, PETRI_PLACES=338, PETRI_TRANSITIONS=553} [2024-01-30 14:21:58,242 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 266 predicate places. [2024-01-30 14:21:58,242 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 553 transitions, 17317 flow [2024-01-30 14:21:58,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:58,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:58,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:58,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-01-30 14:21:58,243 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:58,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:58,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2099814219, now seen corresponding path program 6 times [2024-01-30 14:21:58,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:58,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125271027] [2024-01-30 14:21:58,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:58,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:58,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:58,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125271027] [2024-01-30 14:21:58,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125271027] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:58,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:58,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:21:58,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925959427] [2024-01-30 14:21:58,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:58,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:21:58,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:58,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:21:58,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:21:58,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:58,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 553 transitions, 17317 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:58,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:58,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:58,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:59,976 INFO L124 PetriNetUnfolderBase]: 2493/5244 cut-off events. [2024-01-30 14:21:59,977 INFO L125 PetriNetUnfolderBase]: For 357055/357833 co-relation queries the response was YES. [2024-01-30 14:22:00,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59555 conditions, 5244 events. 2493/5244 cut-off events. For 357055/357833 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 41708 event pairs, 635 based on Foata normal form. 63/5165 useless extension candidates. Maximal degree in co-relation 59423. Up to 2105 conditions per place. [2024-01-30 14:22:00,054 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 411 selfloop transitions, 144 changer transitions 6/599 dead transitions. [2024-01-30 14:22:00,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 599 transitions, 19209 flow [2024-01-30 14:22:00,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:22:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:22:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-01-30 14:22:00,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41596638655462187 [2024-01-30 14:22:00,056 INFO L175 Difference]: Start difference. First operand has 338 places, 553 transitions, 17317 flow. Second operand 7 states and 198 transitions. [2024-01-30 14:22:00,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 599 transitions, 19209 flow [2024-01-30 14:22:00,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 599 transitions, 18911 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-01-30 14:22:00,995 INFO L231 Difference]: Finished difference. Result has 337 places, 547 transitions, 17274 flow [2024-01-30 14:22:00,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=17015, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17274, PETRI_PLACES=337, PETRI_TRANSITIONS=547} [2024-01-30 14:22:00,996 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 265 predicate places. [2024-01-30 14:22:00,996 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 547 transitions, 17274 flow [2024-01-30 14:22:00,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:00,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:22:00,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:22:00,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-01-30 14:22:00,996 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:22:00,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:22:00,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1335963985, now seen corresponding path program 7 times [2024-01-30 14:22:00,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:22:00,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000674898] [2024-01-30 14:22:00,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:22:00,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:22:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:22:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:22:01,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:22:01,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000674898] [2024-01-30 14:22:01,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000674898] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:22:01,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:22:01,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:22:01,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115289068] [2024-01-30 14:22:01,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:22:01,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:22:01,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:22:01,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:22:01,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:22:01,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:22:01,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 547 transitions, 17274 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:01,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:22:01,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:22:01,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:22:02,735 INFO L124 PetriNetUnfolderBase]: 2478/5215 cut-off events. [2024-01-30 14:22:02,735 INFO L125 PetriNetUnfolderBase]: For 356244/357052 co-relation queries the response was YES. [2024-01-30 14:22:02,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59152 conditions, 5215 events. 2478/5215 cut-off events. For 356244/357052 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 41347 event pairs, 642 based on Foata normal form. 57/5139 useless extension candidates. Maximal degree in co-relation 59021. Up to 2214 conditions per place. [2024-01-30 14:22:02,808 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 379 selfloop transitions, 136 changer transitions 27/580 dead transitions. [2024-01-30 14:22:02,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 580 transitions, 18762 flow [2024-01-30 14:22:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:22:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:22:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-01-30 14:22:02,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40336134453781514 [2024-01-30 14:22:02,809 INFO L175 Difference]: Start difference. First operand has 337 places, 547 transitions, 17274 flow. Second operand 7 states and 192 transitions. [2024-01-30 14:22:02,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 580 transitions, 18762 flow [2024-01-30 14:22:03,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 580 transitions, 17975 flow, removed 0 selfloop flow, removed 22 redundant places. [2024-01-30 14:22:03,782 INFO L231 Difference]: Finished difference. Result has 319 places, 518 transitions, 16047 flow [2024-01-30 14:22:03,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16411, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16047, PETRI_PLACES=319, PETRI_TRANSITIONS=518} [2024-01-30 14:22:03,782 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 247 predicate places. [2024-01-30 14:22:03,782 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 518 transitions, 16047 flow [2024-01-30 14:22:03,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:03,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:22:03,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:22:03,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-01-30 14:22:03,783 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:22:03,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:22:03,783 INFO L85 PathProgramCache]: Analyzing trace with hash 855992239, now seen corresponding path program 1 times [2024-01-30 14:22:03,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:22:03,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45529461] [2024-01-30 14:22:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:22:03,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:22:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:22:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:22:03,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:22:03,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45529461] [2024-01-30 14:22:03,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45529461] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:22:03,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:22:03,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:22:03,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769537847] [2024-01-30 14:22:03,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:22:03,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:22:03,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:22:03,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:22:03,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:22:03,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:22:03,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 518 transitions, 16047 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:03,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:22:03,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:22:03,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:22:05,390 INFO L124 PetriNetUnfolderBase]: 2460/5085 cut-off events. [2024-01-30 14:22:05,390 INFO L125 PetriNetUnfolderBase]: For 315179/315728 co-relation queries the response was YES. [2024-01-30 14:22:05,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56407 conditions, 5085 events. 2460/5085 cut-off events. For 315179/315728 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 39071 event pairs, 579 based on Foata normal form. 81/5041 useless extension candidates. Maximal degree in co-relation 56293. Up to 2312 conditions per place. [2024-01-30 14:22:05,457 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 383 selfloop transitions, 133 changer transitions 18/572 dead transitions. [2024-01-30 14:22:05,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 572 transitions, 17883 flow [2024-01-30 14:22:05,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:22:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:22:05,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-01-30 14:22:05,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40808823529411764 [2024-01-30 14:22:05,458 INFO L175 Difference]: Start difference. First operand has 319 places, 518 transitions, 16047 flow. Second operand 8 states and 222 transitions. [2024-01-30 14:22:05,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 572 transitions, 17883 flow [2024-01-30 14:22:06,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 572 transitions, 17199 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-01-30 14:22:06,185 INFO L231 Difference]: Finished difference. Result has 313 places, 501 transitions, 15264 flow [2024-01-30 14:22:06,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=15365, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15264, PETRI_PLACES=313, PETRI_TRANSITIONS=501} [2024-01-30 14:22:06,185 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 241 predicate places. [2024-01-30 14:22:06,185 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 501 transitions, 15264 flow [2024-01-30 14:22:06,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:06,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:22:06,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:22:06,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-01-30 14:22:06,186 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:22:06,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:22:06,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1998212259, now seen corresponding path program 2 times [2024-01-30 14:22:06,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:22:06,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563712039] [2024-01-30 14:22:06,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:22:06,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:22:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:22:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:22:06,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:22:06,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563712039] [2024-01-30 14:22:06,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563712039] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:22:06,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:22:06,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:22:06,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876961816] [2024-01-30 14:22:06,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:22:06,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:22:06,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:22:06,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:22:06,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:22:06,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:22:06,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 501 transitions, 15264 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:06,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:22:06,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:22:06,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:22:07,773 INFO L124 PetriNetUnfolderBase]: 2380/4935 cut-off events. [2024-01-30 14:22:07,773 INFO L125 PetriNetUnfolderBase]: For 296956/297472 co-relation queries the response was YES. [2024-01-30 14:22:07,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53592 conditions, 4935 events. 2380/4935 cut-off events. For 296956/297472 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 37822 event pairs, 560 based on Foata normal form. 81/4892 useless extension candidates. Maximal degree in co-relation 53479. Up to 2005 conditions per place. [2024-01-30 14:22:07,840 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 364 selfloop transitions, 130 changer transitions 19/549 dead transitions. [2024-01-30 14:22:07,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 549 transitions, 16900 flow [2024-01-30 14:22:07,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:22:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:22:07,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-01-30 14:22:07,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4007352941176471 [2024-01-30 14:22:07,841 INFO L175 Difference]: Start difference. First operand has 313 places, 501 transitions, 15264 flow. Second operand 8 states and 218 transitions. [2024-01-30 14:22:07,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 549 transitions, 16900 flow [2024-01-30 14:22:08,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 549 transitions, 16619 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-01-30 14:22:08,647 INFO L231 Difference]: Finished difference. Result has 314 places, 483 transitions, 14837 flow [2024-01-30 14:22:08,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=14987, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14837, PETRI_PLACES=314, PETRI_TRANSITIONS=483} [2024-01-30 14:22:08,647 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 242 predicate places. [2024-01-30 14:22:08,647 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 483 transitions, 14837 flow [2024-01-30 14:22:08,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:08,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:22:08,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:22:08,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-01-30 14:22:08,648 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:22:08,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:22:08,648 INFO L85 PathProgramCache]: Analyzing trace with hash 636475389, now seen corresponding path program 3 times [2024-01-30 14:22:08,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:22:08,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472891310] [2024-01-30 14:22:08,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:22:08,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:22:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:22:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:22:08,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:22:08,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472891310] [2024-01-30 14:22:08,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472891310] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:22:08,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:22:08,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:22:08,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622216169] [2024-01-30 14:22:08,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:22:08,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:22:08,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:22:08,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:22:08,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:22:08,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:22:08,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 483 transitions, 14837 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:08,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:22:08,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:22:08,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:22:10,182 INFO L124 PetriNetUnfolderBase]: 2293/4798 cut-off events. [2024-01-30 14:22:10,182 INFO L125 PetriNetUnfolderBase]: For 288352/288836 co-relation queries the response was YES. [2024-01-30 14:22:10,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51979 conditions, 4798 events. 2293/4798 cut-off events. For 288352/288836 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 36779 event pairs, 565 based on Foata normal form. 73/4753 useless extension candidates. Maximal degree in co-relation 51866. Up to 2269 conditions per place. [2024-01-30 14:22:10,240 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 304 selfloop transitions, 125 changer transitions 60/523 dead transitions. [2024-01-30 14:22:10,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 523 transitions, 16277 flow [2024-01-30 14:22:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:22:10,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:22:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-01-30 14:22:10,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025735294117647 [2024-01-30 14:22:10,241 INFO L175 Difference]: Start difference. First operand has 314 places, 483 transitions, 14837 flow. Second operand 8 states and 219 transitions. [2024-01-30 14:22:10,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 523 transitions, 16277 flow [2024-01-30 14:22:10,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 523 transitions, 15869 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-01-30 14:22:10,921 INFO L231 Difference]: Finished difference. Result has 313 places, 423 transitions, 13167 flow [2024-01-30 14:22:10,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=14429, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13167, PETRI_PLACES=313, PETRI_TRANSITIONS=423} [2024-01-30 14:22:10,922 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 241 predicate places. [2024-01-30 14:22:10,922 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 423 transitions, 13167 flow [2024-01-30 14:22:10,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:10,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:22:10,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:22:10,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-01-30 14:22:10,922 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:22:10,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:22:10,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1021354067, now seen corresponding path program 4 times [2024-01-30 14:22:10,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:22:10,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284873307] [2024-01-30 14:22:10,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:22:10,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:22:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:22:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:22:11,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:22:11,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284873307] [2024-01-30 14:22:11,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284873307] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:22:11,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:22:11,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:22:11,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587283968] [2024-01-30 14:22:11,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:22:11,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:22:11,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:22:11,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:22:11,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:22:11,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:22:11,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 423 transitions, 13167 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:11,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:22:11,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:22:11,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:22:12,293 INFO L124 PetriNetUnfolderBase]: 2113/4400 cut-off events. [2024-01-30 14:22:12,293 INFO L125 PetriNetUnfolderBase]: For 263224/263631 co-relation queries the response was YES. [2024-01-30 14:22:12,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47178 conditions, 4400 events. 2113/4400 cut-off events. For 263224/263631 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 32872 event pairs, 520 based on Foata normal form. 78/4365 useless extension candidates. Maximal degree in co-relation 47066. Up to 1734 conditions per place. [2024-01-30 14:22:12,354 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 262 selfloop transitions, 151 changer transitions 20/464 dead transitions. [2024-01-30 14:22:12,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 464 transitions, 14483 flow [2024-01-30 14:22:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:22:12,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:22:12,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-01-30 14:22:12,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-01-30 14:22:12,354 INFO L175 Difference]: Start difference. First operand has 313 places, 423 transitions, 13167 flow. Second operand 8 states and 224 transitions. [2024-01-30 14:22:12,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 464 transitions, 14483 flow [2024-01-30 14:22:12,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 464 transitions, 13970 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-01-30 14:22:12,970 INFO L231 Difference]: Finished difference. Result has 309 places, 404 transitions, 12559 flow [2024-01-30 14:22:12,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12656, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12559, PETRI_PLACES=309, PETRI_TRANSITIONS=404} [2024-01-30 14:22:12,970 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 237 predicate places. [2024-01-30 14:22:12,970 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 404 transitions, 12559 flow [2024-01-30 14:22:12,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:12,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:22:12,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:22:12,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-01-30 14:22:12,971 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:22:12,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:22:12,971 INFO L85 PathProgramCache]: Analyzing trace with hash 210659817, now seen corresponding path program 5 times [2024-01-30 14:22:12,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:22:12,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206134716] [2024-01-30 14:22:12,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:22:12,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:22:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:22:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:22:13,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:22:13,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206134716] [2024-01-30 14:22:13,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206134716] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:22:13,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:22:13,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:22:13,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176443624] [2024-01-30 14:22:13,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:22:13,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:22:13,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:22:13,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:22:13,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:22:13,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:22:13,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 404 transitions, 12559 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:13,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:22:13,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:22:13,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:22:14,223 INFO L124 PetriNetUnfolderBase]: 1965/4148 cut-off events. [2024-01-30 14:22:14,223 INFO L125 PetriNetUnfolderBase]: For 238473/238857 co-relation queries the response was YES. [2024-01-30 14:22:14,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44349 conditions, 4148 events. 1965/4148 cut-off events. For 238473/238857 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 30938 event pairs, 490 based on Foata normal form. 56/4096 useless extension candidates. Maximal degree in co-relation 44239. Up to 1734 conditions per place. [2024-01-30 14:22:14,276 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 269 selfloop transitions, 115 changer transitions 31/444 dead transitions. [2024-01-30 14:22:14,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 444 transitions, 13822 flow [2024-01-30 14:22:14,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:22:14,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:22:14,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-01-30 14:22:14,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099264705882353 [2024-01-30 14:22:14,277 INFO L175 Difference]: Start difference. First operand has 309 places, 404 transitions, 12559 flow. Second operand 8 states and 223 transitions. [2024-01-30 14:22:14,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 444 transitions, 13822 flow [2024-01-30 14:22:14,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 444 transitions, 13486 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-01-30 14:22:14,812 INFO L231 Difference]: Finished difference. Result has 309 places, 373 transitions, 11670 flow [2024-01-30 14:22:14,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12223, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11670, PETRI_PLACES=309, PETRI_TRANSITIONS=373} [2024-01-30 14:22:14,812 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 237 predicate places. [2024-01-30 14:22:14,813 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 373 transitions, 11670 flow [2024-01-30 14:22:14,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:14,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:22:14,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:22:14,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-01-30 14:22:14,813 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:22:14,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:22:14,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1238449317, now seen corresponding path program 6 times [2024-01-30 14:22:14,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:22:14,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570687830] [2024-01-30 14:22:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:22:14,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:22:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:22:14,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:22:14,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:22:14,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570687830] [2024-01-30 14:22:14,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570687830] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:22:14,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:22:14,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:22:14,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933802378] [2024-01-30 14:22:14,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:22:14,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:22:14,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:22:14,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:22:14,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:22:14,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:22:14,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 373 transitions, 11670 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:14,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:22:14,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:22:14,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:22:16,013 INFO L124 PetriNetUnfolderBase]: 1877/4043 cut-off events. [2024-01-30 14:22:16,013 INFO L125 PetriNetUnfolderBase]: For 222144/222524 co-relation queries the response was YES. [2024-01-30 14:22:16,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42555 conditions, 4043 events. 1877/4043 cut-off events. For 222144/222524 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 30434 event pairs, 522 based on Foata normal form. 56/4007 useless extension candidates. Maximal degree in co-relation 42446. Up to 2191 conditions per place. [2024-01-30 14:22:16,063 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 261 selfloop transitions, 75 changer transitions 43/408 dead transitions. [2024-01-30 14:22:16,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 408 transitions, 12795 flow [2024-01-30 14:22:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:22:16,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:22:16,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-01-30 14:22:16,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897058823529412 [2024-01-30 14:22:16,064 INFO L175 Difference]: Start difference. First operand has 309 places, 373 transitions, 11670 flow. Second operand 8 states and 212 transitions. [2024-01-30 14:22:16,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 408 transitions, 12795 flow [2024-01-30 14:22:16,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 408 transitions, 12434 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-01-30 14:22:16,561 INFO L231 Difference]: Finished difference. Result has 304 places, 332 transitions, 10417 flow [2024-01-30 14:22:16,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=11309, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10417, PETRI_PLACES=304, PETRI_TRANSITIONS=332} [2024-01-30 14:22:16,562 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 232 predicate places. [2024-01-30 14:22:16,562 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 332 transitions, 10417 flow [2024-01-30 14:22:16,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:16,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:22:16,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:22:16,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-01-30 14:22:16,562 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:22:16,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:22:16,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1495809199, now seen corresponding path program 7 times [2024-01-30 14:22:16,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:22:16,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043527941] [2024-01-30 14:22:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:22:16,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:22:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:22:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:22:16,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:22:16,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043527941] [2024-01-30 14:22:16,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043527941] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:22:16,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:22:16,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:22:16,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708846157] [2024-01-30 14:22:16,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:22:16,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:22:16,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:22:16,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:22:16,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:22:16,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:22:16,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 332 transitions, 10417 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:16,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:22:16,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:22:16,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:22:17,660 INFO L124 PetriNetUnfolderBase]: 1818/3823 cut-off events. [2024-01-30 14:22:17,660 INFO L125 PetriNetUnfolderBase]: For 206079/206388 co-relation queries the response was YES. [2024-01-30 14:22:17,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40115 conditions, 3823 events. 1818/3823 cut-off events. For 206079/206388 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 27804 event pairs, 542 based on Foata normal form. 48/3757 useless extension candidates. Maximal degree in co-relation 40008. Up to 1764 conditions per place. [2024-01-30 14:22:17,786 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 214 selfloop transitions, 87 changer transitions 23/352 dead transitions. [2024-01-30 14:22:17,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 352 transitions, 11211 flow [2024-01-30 14:22:17,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:22:17,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:22:17,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-01-30 14:22:17,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38865546218487396 [2024-01-30 14:22:17,787 INFO L175 Difference]: Start difference. First operand has 304 places, 332 transitions, 10417 flow. Second operand 7 states and 185 transitions. [2024-01-30 14:22:17,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 352 transitions, 11211 flow [2024-01-30 14:22:18,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 352 transitions, 10525 flow, removed 4 selfloop flow, removed 27 redundant places. [2024-01-30 14:22:18,218 INFO L231 Difference]: Finished difference. Result has 281 places, 307 transitions, 9404 flow [2024-01-30 14:22:18,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9671, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9404, PETRI_PLACES=281, PETRI_TRANSITIONS=307} [2024-01-30 14:22:18,219 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 209 predicate places. [2024-01-30 14:22:18,219 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 307 transitions, 9404 flow [2024-01-30 14:22:18,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:18,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:22:18,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:22:18,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-01-30 14:22:18,219 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:22:18,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:22:18,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1092365750, now seen corresponding path program 1 times [2024-01-30 14:22:18,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:22:18,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703098925] [2024-01-30 14:22:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:22:18,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:22:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:22:18,229 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-30 14:22:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:22:18,264 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-30 14:22:18,265 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-30 14:22:18,265 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 57 remaining) [2024-01-30 14:22:18,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 57 remaining) [2024-01-30 14:22:18,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 57 remaining) [2024-01-30 14:22:18,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 57 remaining) [2024-01-30 14:22:18,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 57 remaining) [2024-01-30 14:22:18,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 57 remaining) [2024-01-30 14:22:18,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 57 remaining) [2024-01-30 14:22:18,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 57 remaining) [2024-01-30 14:22:18,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 57 remaining) [2024-01-30 14:22:18,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 57 remaining) [2024-01-30 14:22:18,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 57 remaining) [2024-01-30 14:22:18,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 57 remaining) [2024-01-30 14:22:18,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 57 remaining) [2024-01-30 14:22:18,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 57 remaining) [2024-01-30 14:22:18,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 57 remaining) [2024-01-30 14:22:18,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 57 remaining) [2024-01-30 14:22:18,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 57 remaining) [2024-01-30 14:22:18,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 57 remaining) [2024-01-30 14:22:18,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 57 remaining) [2024-01-30 14:22:18,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 57 remaining) [2024-01-30 14:22:18,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 57 remaining) [2024-01-30 14:22:18,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 57 remaining) [2024-01-30 14:22:18,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 57 remaining) [2024-01-30 14:22:18,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 57 remaining) [2024-01-30 14:22:18,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 57 remaining) [2024-01-30 14:22:18,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 57 remaining) [2024-01-30 14:22:18,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 57 remaining) [2024-01-30 14:22:18,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 57 remaining) [2024-01-30 14:22:18,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 57 remaining) [2024-01-30 14:22:18,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 57 remaining) [2024-01-30 14:22:18,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (26 of 57 remaining) [2024-01-30 14:22:18,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 57 remaining) [2024-01-30 14:22:18,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 57 remaining) [2024-01-30 14:22:18,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 57 remaining) [2024-01-30 14:22:18,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 57 remaining) [2024-01-30 14:22:18,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 57 remaining) [2024-01-30 14:22:18,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 57 remaining) [2024-01-30 14:22:18,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 57 remaining) [2024-01-30 14:22:18,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 57 remaining) [2024-01-30 14:22:18,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 57 remaining) [2024-01-30 14:22:18,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 57 remaining) [2024-01-30 14:22:18,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 57 remaining) [2024-01-30 14:22:18,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 57 remaining) [2024-01-30 14:22:18,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 57 remaining) [2024-01-30 14:22:18,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 57 remaining) [2024-01-30 14:22:18,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 57 remaining) [2024-01-30 14:22:18,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 57 remaining) [2024-01-30 14:22:18,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 57 remaining) [2024-01-30 14:22:18,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 57 remaining) [2024-01-30 14:22:18,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 57 remaining) [2024-01-30 14:22:18,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 57 remaining) [2024-01-30 14:22:18,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 57 remaining) [2024-01-30 14:22:18,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 57 remaining) [2024-01-30 14:22:18,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 57 remaining) [2024-01-30 14:22:18,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 57 remaining) [2024-01-30 14:22:18,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 57 remaining) [2024-01-30 14:22:18,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 57 remaining) [2024-01-30 14:22:18,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-01-30 14:22:18,276 INFO L445 BasicCegarLoop]: Path program histogram: [7, 7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:22:18,281 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-30 14:22:18,281 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-30 14:22:18,323 INFO L503 ceAbstractionStarter]: Automizer considered 30 witness invariants [2024-01-30 14:22:18,324 INFO L504 ceAbstractionStarter]: WitnessConsidered=30 [2024-01-30 14:22:18,324 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:22:18 BasicIcfg [2024-01-30 14:22:18,324 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-30 14:22:18,325 INFO L158 Benchmark]: Toolchain (without parser) took 212993.14ms. Allocated memory was 146.8MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 112.6MB in the beginning and 3.1GB in the end (delta: -3.0GB). Peak memory consumption was 214.8MB. Max. memory is 16.1GB. [2024-01-30 14:22:18,325 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:22:18,325 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 121.6MB. Free memory was 94.7MB in the beginning and 94.6MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:22:18,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 644.81ms. Allocated memory is still 146.8MB. Free memory was 112.6MB in the beginning and 84.5MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-01-30 14:22:18,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.55ms. Allocated memory is still 146.8MB. Free memory was 84.5MB in the beginning and 81.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:22:18,326 INFO L158 Benchmark]: Boogie Preprocessor took 72.84ms. Allocated memory is still 146.8MB. Free memory was 81.9MB in the beginning and 79.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-30 14:22:18,326 INFO L158 Benchmark]: RCFGBuilder took 719.48ms. Allocated memory is still 146.8MB. Free memory was 79.0MB in the beginning and 81.7MB in the end (delta: -2.6MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2024-01-30 14:22:18,326 INFO L158 Benchmark]: TraceAbstraction took 211487.30ms. Allocated memory was 146.8MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 80.6MB in the beginning and 3.1GB in the end (delta: -3.0GB). Peak memory consumption was 183.0MB. Max. memory is 16.1GB. [2024-01-30 14:22:18,327 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 121.6MB. Free memory was 94.7MB in the beginning and 94.6MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 644.81ms. Allocated memory is still 146.8MB. Free memory was 112.6MB in the beginning and 84.5MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.55ms. Allocated memory is still 146.8MB. Free memory was 84.5MB in the beginning and 81.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.84ms. Allocated memory is still 146.8MB. Free memory was 81.9MB in the beginning and 79.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 719.48ms. Allocated memory is still 146.8MB. Free memory was 79.0MB in the beginning and 81.7MB in the end (delta: -2.6MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * TraceAbstraction took 211487.30ms. Allocated memory was 146.8MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 80.6MB in the beginning and 3.1GB in the end (delta: -3.0GB). Peak memory consumption was 183.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 767]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; [L712] 0 int x = 0; [L714] 0 int y = 0; [L756] 0 pthread_t t2485; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, t2485={5:0}, x=0, y=0] [L757] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_cnt],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]]]]] [L757] FCALL, FORK 0 pthread_create(&t2485, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2485={5:0}, x=0, y=0] [L758] 0 pthread_t t2486; [L759] FCALL, FORK 0 pthread_create(&t2486, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2485={5:0}, t2486={3:0}, x=0, y=0] [L717] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L718] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L718] 1 y = 2 [L719] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L732] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L720] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L733] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L733] 2 x = 2 [L734] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=2, y=2] [L735] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=2, y=2] [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L721] 1 x = 1 [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L723] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L725] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L736] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L736] 2 y = 1 [L737] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L738] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L740] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L726] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L727] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L741] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L741] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L742] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L761] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L761] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L762] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2485={5:0}, t2486={3:0}, x=1, y=1] [L763] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L763] RET 0 assume_abort_if_not(main$tmp_guard0) [L765] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2485={5:0}, t2486={3:0}, x=1, y=1] [L767] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2485={5:0}, t2486={3:0}, x=1, y=1] - UnprovableResult [Line: 717]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 735]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 736]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 737]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 741]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 742]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 757]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 765]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 768]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 757]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 116 locations, 57 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 211.3s, OverallIterations: 113, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 196.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9337 SdHoareTripleChecker+Valid, 17.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8485 mSDsluCounter, 1572 SdHoareTripleChecker+Invalid, 14.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1309 mSDsCounter, 1421 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21872 IncrementalHoareTripleChecker+Invalid, 23293 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1421 mSolverCounterUnsat, 263 mSDtfsCounter, 21872 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 639 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 555 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19687occurred in iteration=98, InterpolantAutomatonStates: 715, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.5s InterpolantComputationTime, 2008 NumberOfCodeBlocks, 2008 NumberOfCodeBlocksAsserted, 113 NumberOfCheckSat, 1868 ConstructedInterpolants, 0 QuantifiedInterpolants, 37884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 112 InterpolantComputations, 112 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-01-30 14:22:18,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE