./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.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/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 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/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-59af5db-m [2024-02-02 09:13:13,473 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:13:13,556 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:13:13,561 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:13:13,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:13:13,585 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:13:13,586 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:13:13,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:13:13,586 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:13:13,590 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:13:13,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:13:13,590 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:13:13,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:13:13,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:13:13,592 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:13:13,592 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:13:13,592 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:13:13,593 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:13:13,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:13:13,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:13:13,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:13:13,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:13:13,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:13:13,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:13:13,594 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:13:13,594 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:13:13,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:13:13,595 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:13:13,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:13:13,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:13:13,596 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:13:13,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:13:13,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:13:13,597 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:13:13,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:13:13,597 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:13:13,597 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:13:13,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:13:13,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:13:13,598 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:13:13,598 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:13:13,598 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:13:13,598 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:13:13,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:13:13,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:13:13,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:13:13,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:13:13,835 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:13:13,835 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:13:13,836 INFO L431 ainManager$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/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-02-02 09:13:14,062 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:13:14,063 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:13:14,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-02 09:13:15,199 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:13:15,495 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:13:15,496 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-02 09:13:15,512 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56207273b/864b371080404222a6a54fdb8d615aad/FLAGd744976c5 [2024-02-02 09:13:15,526 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56207273b/864b371080404222a6a54fdb8d615aad [2024-02-02 09:13:15,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:13:15,528 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:13:15,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:13:15,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:13:15,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:13:15,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:13:14" (1/2) ... [2024-02-02 09:13:15,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f88465c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:13:15, skipping insertion in model container [2024-02-02 09:13:15,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:13:14" (1/2) ... [2024-02-02 09:13:15,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6615c238 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:13:15, skipping insertion in model container [2024-02-02 09:13:15,539 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:13:15" (2/2) ... [2024-02-02 09:13:15,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f88465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:15, skipping insertion in model container [2024-02-02 09:13:15,540 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:13:15" (2/2) ... [2024-02-02 09:13:15,541 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:13:15,736 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:13:15,740 INFO L101 nessWitnessExtractor]: Location invariant before [L745-L745] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,741 INFO L101 nessWitnessExtractor]: Location invariant before [L738-L738] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,741 INFO L101 nessWitnessExtractor]: Location invariant before [L761-L761] ((((((__unbuffered_cnt == 0) && (__unbuffered_p0_EAX == 0)) && (__unbuffered_p1_EAX == 0)) && (main$tmp_guard0 == (_Bool)0)) && (main$tmp_guard1 == (_Bool)0)) && (x == 0)) && (y == 0) [2024-02-02 09:13:15,741 INFO L101 nessWitnessExtractor]: Location invariant before [L728-L728] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,741 INFO L101 nessWitnessExtractor]: Location invariant before [L742-L742] (unsigned long )arg == 0UL [2024-02-02 09:13:15,741 INFO L101 nessWitnessExtractor]: Location invariant before [L725-L725] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,741 INFO L101 nessWitnessExtractor]: Location invariant before [L736-L736] (unsigned long )arg == 0UL [2024-02-02 09:13:15,742 INFO L101 nessWitnessExtractor]: Location invariant before [L739-L739] (unsigned long )arg == 0UL [2024-02-02 09:13:15,742 INFO L101 nessWitnessExtractor]: Location invariant before [L737-L737] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,742 INFO L101 nessWitnessExtractor]: Location invariant before [L747-L747] (unsigned long )arg == 0UL [2024-02-02 09:13:15,742 INFO L101 nessWitnessExtractor]: Location invariant before [L740-L740] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,742 INFO L101 nessWitnessExtractor]: Location invariant before [L721-L721] (unsigned long )arg == 0UL [2024-02-02 09:13:15,742 INFO L101 nessWitnessExtractor]: Location invariant before [L731-L731] (((((((((((((((0 <= __unbuffered_p0_EAX) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,742 INFO L101 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-02-02 09:13:15,742 INFO L101 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-02-02 09:13:15,743 INFO L101 nessWitnessExtractor]: Location invariant before [L772-L772] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,743 INFO L101 nessWitnessExtractor]: Location invariant before [L766-L766] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,743 INFO L101 nessWitnessExtractor]: Location invariant before [L730-L730] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,743 INFO L101 nessWitnessExtractor]: Location invariant before [L722-L722] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,743 INFO L101 nessWitnessExtractor]: Location invariant before [L729-L729] (unsigned long )arg == 0UL [2024-02-02 09:13:15,743 INFO L101 nessWitnessExtractor]: Location invariant before [L746-L746] (((((((((((((((0 <= __unbuffered_p0_EAX) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,744 INFO L101 nessWitnessExtractor]: Location invariant before [L743-L743] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,744 INFO L101 nessWitnessExtractor]: Location invariant before [L726-L726] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (y <= 1)) && (x == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,744 INFO L101 nessWitnessExtractor]: Location invariant before [L744-L744] (unsigned long )arg == 0UL [2024-02-02 09:13:15,744 INFO L101 nessWitnessExtractor]: Location invariant before [L771-L771] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,744 INFO L101 nessWitnessExtractor]: Location invariant before [L741-L741] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-02-02 09:13:15,745 INFO L101 nessWitnessExtractor]: Location invariant before [L723-L723] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,745 INFO L101 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-02-02 09:13:15,745 INFO L101 nessWitnessExtractor]: Location invariant before [L769-L769] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,745 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] ((((expression == 0) && (0 <= expression)) && (expression <= 1)) && (expression == 0 || expression == 1)) && (expression == 1) [2024-02-02 09:13:15,745 INFO L101 nessWitnessExtractor]: Location invariant before [L765-L765] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 09:13:15,783 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:13:15,924 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/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2024-02-02 09:13:16,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:13:16,098 INFO L202 MainTranslator]: Completed pre-run [2024-02-02 09:13:16,111 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/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2024-02-02 09:13:16,113 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 [2024-02-02 09:13:16,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:13:16,293 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:13:16,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:16 WrapperNode [2024-02-02 09:13:16,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:13:16,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:13:16,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:13:16,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:13:16,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:16" (1/1) ... [2024-02-02 09:13:16,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:16" (1/1) ... [2024-02-02 09:13:16,346 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-02-02 09:13:16,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:13:16,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:13:16,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:13:16,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:13:16,357 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:16" (1/1) ... [2024-02-02 09:13:16,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:16" (1/1) ... [2024-02-02 09:13:16,360 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:16" (1/1) ... [2024-02-02 09:13:16,374 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]. [2024-02-02 09:13:16,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:16" (1/1) ... [2024-02-02 09:13:16,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:16" (1/1) ... [2024-02-02 09:13:16,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:16" (1/1) ... [2024-02-02 09:13:16,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:16" (1/1) ... [2024-02-02 09:13:16,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:16" (1/1) ... [2024-02-02 09:13:16,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:16" (1/1) ... [2024-02-02 09:13:16,389 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:13:16,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:13:16,390 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:13:16,390 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:13:16,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:16" (1/1) ... [2024-02-02 09:13:16,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:13:16,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:13:16,432 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) [2024-02-02 09:13:16,482 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 [2024-02-02 09:13:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:13:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:13:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:13:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-02 09:13:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:13:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:13:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:13:16,496 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-02 09:13:16,496 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-02 09:13:16,496 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-02 09:13:16,496 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-02 09:13:16,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:13:16,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:13:16,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:13:16,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-02 09:13:16,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:13:16,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:13:16,498 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:13:16,627 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:13:16,629 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:13:16,952 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:13:16,952 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:13:17,116 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:13:17,117 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-02 09:13:17,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:13:17 BoogieIcfgContainer [2024-02-02 09:13:17,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:13:17,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:13:17,121 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:13:17,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:13:17,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:13:14" (1/4) ... [2024-02-02 09:13:17,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2299941f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:13:17, skipping insertion in model container [2024-02-02 09:13:17,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:13:15" (2/4) ... [2024-02-02 09:13:17,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2299941f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:13:17, skipping insertion in model container [2024-02-02 09:13:17,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:13:16" (3/4) ... [2024-02-02 09:13:17,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2299941f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:13:17, skipping insertion in model container [2024-02-02 09:13:17,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:13:17" (4/4) ... [2024-02-02 09:13:17,128 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-02 09:13:17,141 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:13:17,142 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2024-02-02 09:13:17,142 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:13:17,198 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:13:17,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 68 transitions, 144 flow [2024-02-02 09:13:17,270 INFO L124 PetriNetUnfolderBase]: 1/66 cut-off events. [2024-02-02 09:13:17,270 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:13:17,274 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 8. Compared 215 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. [2024-02-02 09:13:17,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 68 transitions, 144 flow [2024-02-02 09:13:17,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 66 transitions, 138 flow [2024-02-02 09:13:17,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:13:17,301 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;@1da5ee82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:13:17,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-02-02 09:13:17,304 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:13:17,305 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:13:17,305 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:13:17,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:17,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:13:17,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:17,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:17,346 INFO L85 PathProgramCache]: Analyzing trace with hash 9989, now seen corresponding path program 1 times [2024-02-02 09:13:17,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:17,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2186437] [2024-02-02 09:13:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:17,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:17,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:17,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2186437] [2024-02-02 09:13:17,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2186437] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:17,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:17,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:13:17,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585673564] [2024-02-02 09:13:17,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:17,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:13:17,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:17,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:13:17,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:13:17,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 68 [2024-02-02 09:13:17,831 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) [2024-02-02 09:13:17,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:17,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 68 [2024-02-02 09:13:17,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:18,442 INFO L124 PetriNetUnfolderBase]: 1643/3194 cut-off events. [2024-02-02 09:13:18,443 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-02 09:13:18,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5857 conditions, 3194 events. 1643/3194 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 24326 event pairs, 1001 based on Foata normal form. 100/2058 useless extension candidates. Maximal degree in co-relation 5845. Up to 2517 conditions per place. [2024-02-02 09:13:18,465 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 42 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-02-02 09:13:18,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 235 flow [2024-02-02 09:13:18,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:13:18,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:13:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-02-02 09:13:18,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6715686274509803 [2024-02-02 09:13:18,476 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 138 flow. Second operand 3 states and 137 transitions. [2024-02-02 09:13:18,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 235 flow [2024-02-02 09:13:18,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 68 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:13:18,481 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 137 flow [2024-02-02 09:13:18,482 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} [2024-02-02 09:13:18,484 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2024-02-02 09:13:18,485 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 137 flow [2024-02-02 09:13:18,485 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) [2024-02-02 09:13:18,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:18,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:13:18,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:13:18,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:18,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:18,486 INFO L85 PathProgramCache]: Analyzing trace with hash 297970053, now seen corresponding path program 1 times [2024-02-02 09:13:18,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:18,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988010076] [2024-02-02 09:13:18,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:18,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:18,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:18,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988010076] [2024-02-02 09:13:18,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988010076] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:18,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:18,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:13:18,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657712252] [2024-02-02 09:13:18,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:18,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:13:18,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:18,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:13:18,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:13:18,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-02-02 09:13:18,567 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) [2024-02-02 09:13:18,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:18,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-02-02 09:13:18,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:18,985 INFO L124 PetriNetUnfolderBase]: 1780/3358 cut-off events. [2024-02-02 09:13:18,985 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-02-02 09:13:18,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6611 conditions, 3358 events. 1780/3358 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 25301 event pairs, 980 based on Foata normal form. 384/2775 useless extension candidates. Maximal degree in co-relation 6598. Up to 2714 conditions per place. [2024-02-02 09:13:19,000 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 55 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-02-02 09:13:19,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 74 transitions, 292 flow [2024-02-02 09:13:19,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:13:19,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:13:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-02-02 09:13:19,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147058823529411 [2024-02-02 09:13:19,003 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 137 flow. Second operand 4 states and 140 transitions. [2024-02-02 09:13:19,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 74 transitions, 292 flow [2024-02-02 09:13:19,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 74 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:13:19,005 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 128 flow [2024-02-02 09:13:19,005 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} [2024-02-02 09:13:19,005 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2024-02-02 09:13:19,006 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 128 flow [2024-02-02 09:13:19,006 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) [2024-02-02 09:13:19,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:19,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 09:13:19,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:13:19,006 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:19,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:19,007 INFO L85 PathProgramCache]: Analyzing trace with hash 647137400, now seen corresponding path program 1 times [2024-02-02 09:13:19,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:19,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607402582] [2024-02-02 09:13:19,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:19,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:19,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:19,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607402582] [2024-02-02 09:13:19,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607402582] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:19,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:19,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:13:19,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131180924] [2024-02-02 09:13:19,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:19,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:13:19,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:19,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:13:19,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:13:19,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 68 [2024-02-02 09:13:19,262 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) [2024-02-02 09:13:19,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:19,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 68 [2024-02-02 09:13:19,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:19,742 INFO L124 PetriNetUnfolderBase]: 2412/4493 cut-off events. [2024-02-02 09:13:19,743 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2024-02-02 09:13:19,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8876 conditions, 4493 events. 2412/4493 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 32897 event pairs, 1501 based on Foata normal form. 14/3283 useless extension candidates. Maximal degree in co-relation 8862. Up to 3689 conditions per place. [2024-02-02 09:13:19,763 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 54 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2024-02-02 09:13:19,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 292 flow [2024-02-02 09:13:19,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:13:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:13:19,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-02-02 09:13:19,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44485294117647056 [2024-02-02 09:13:19,765 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 128 flow. Second operand 4 states and 121 transitions. [2024-02-02 09:13:19,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 292 flow [2024-02-02 09:13:19,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:13:19,767 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 153 flow [2024-02-02 09:13:19,767 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=153, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-02-02 09:13:19,768 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2024-02-02 09:13:19,768 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 153 flow [2024-02-02 09:13:19,768 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) [2024-02-02 09:13:19,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:19,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:19,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:13:19,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:19,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:19,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1414309396, now seen corresponding path program 1 times [2024-02-02 09:13:19,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:19,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416060500] [2024-02-02 09:13:19,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:19,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:19,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:19,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416060500] [2024-02-02 09:13:19,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416060500] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:19,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:19,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:13:19,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017593526] [2024-02-02 09:13:19,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:19,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:13:19,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:19,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:13:19,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:13:19,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-02-02 09:13:19,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 153 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) [2024-02-02 09:13:19,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:19,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-02-02 09:13:19,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:20,199 INFO L124 PetriNetUnfolderBase]: 1779/3266 cut-off events. [2024-02-02 09:13:20,200 INFO L125 PetriNetUnfolderBase]: For 486/501 co-relation queries the response was YES. [2024-02-02 09:13:20,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6712 conditions, 3266 events. 1779/3266 cut-off events. For 486/501 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 23905 event pairs, 387 based on Foata normal form. 401/2866 useless extension candidates. Maximal degree in co-relation 6696. Up to 2722 conditions per place. [2024-02-02 09:13:20,219 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 59 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-02-02 09:13:20,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 74 transitions, 327 flow [2024-02-02 09:13:20,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:13:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:13:20,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-02-02 09:13:20,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257352941176471 [2024-02-02 09:13:20,221 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 153 flow. Second operand 4 states and 143 transitions. [2024-02-02 09:13:20,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 74 transitions, 327 flow [2024-02-02 09:13:20,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 74 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:13:20,223 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 139 flow [2024-02-02 09:13:20,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=135, 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=139, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-02-02 09:13:20,224 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2024-02-02 09:13:20,224 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 139 flow [2024-02-02 09:13:20,224 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) [2024-02-02 09:13:20,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:20,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:20,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:13:20,225 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:20,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:20,225 INFO L85 PathProgramCache]: Analyzing trace with hash -893917945, now seen corresponding path program 1 times [2024-02-02 09:13:20,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:20,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566892488] [2024-02-02 09:13:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:20,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:20,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:20,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566892488] [2024-02-02 09:13:20,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566892488] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:20,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:20,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:13:20,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889496427] [2024-02-02 09:13:20,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:20,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:13:20,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:20,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:13:20,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:13:20,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 68 [2024-02-02 09:13:20,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 139 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) [2024-02-02 09:13:20,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:20,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 68 [2024-02-02 09:13:20,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:20,830 INFO L124 PetriNetUnfolderBase]: 2427/4402 cut-off events. [2024-02-02 09:13:20,831 INFO L125 PetriNetUnfolderBase]: For 630/645 co-relation queries the response was YES. [2024-02-02 09:13:20,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9057 conditions, 4402 events. 2427/4402 cut-off events. For 630/645 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 30461 event pairs, 1713 based on Foata normal form. 21/3389 useless extension candidates. Maximal degree in co-relation 9042. Up to 3835 conditions per place. [2024-02-02 09:13:20,851 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 48 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2024-02-02 09:13:20,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 282 flow [2024-02-02 09:13:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:13:20,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:13:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-02-02 09:13:20,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4227941176470588 [2024-02-02 09:13:20,853 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 139 flow. Second operand 4 states and 115 transitions. [2024-02-02 09:13:20,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 282 flow [2024-02-02 09:13:20,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:13:20,855 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 168 flow [2024-02-02 09:13:20,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=136, 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=168, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-02-02 09:13:20,856 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -9 predicate places. [2024-02-02 09:13:20,856 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 168 flow [2024-02-02 09:13:20,857 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) [2024-02-02 09:13:20,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:20,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:20,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:13:20,857 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:20,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:20,858 INFO L85 PathProgramCache]: Analyzing trace with hash 291309534, now seen corresponding path program 1 times [2024-02-02 09:13:20,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:20,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038016850] [2024-02-02 09:13:20,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:20,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:21,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:21,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038016850] [2024-02-02 09:13:21,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038016850] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:21,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:21,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:13:21,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041862721] [2024-02-02 09:13:21,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:21,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:13:21,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:21,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:13:21,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:13:21,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:21,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 168 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) [2024-02-02 09:13:21,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:21,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:21,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:21,557 INFO L124 PetriNetUnfolderBase]: 2169/3804 cut-off events. [2024-02-02 09:13:21,557 INFO L125 PetriNetUnfolderBase]: For 749/755 co-relation queries the response was YES. [2024-02-02 09:13:21,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8227 conditions, 3804 events. 2169/3804 cut-off events. For 749/755 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 25742 event pairs, 1464 based on Foata normal form. 30/2982 useless extension candidates. Maximal degree in co-relation 8209. Up to 3361 conditions per place. [2024-02-02 09:13:21,574 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 63 selfloop transitions, 10 changer transitions 0/82 dead transitions. [2024-02-02 09:13:21,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 82 transitions, 395 flow [2024-02-02 09:13:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:13:21,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:13:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-02-02 09:13:21,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-02-02 09:13:21,576 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 168 flow. Second operand 6 states and 168 transitions. [2024-02-02 09:13:21,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 82 transitions, 395 flow [2024-02-02 09:13:21,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 82 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:13:21,578 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 240 flow [2024-02-02 09:13:21,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2024-02-02 09:13:21,578 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2024-02-02 09:13:21,579 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 240 flow [2024-02-02 09:13:21,579 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) [2024-02-02 09:13:21,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:21,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:21,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:13:21,579 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:21,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:21,580 INFO L85 PathProgramCache]: Analyzing trace with hash 580989179, now seen corresponding path program 1 times [2024-02-02 09:13:21,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:21,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456165511] [2024-02-02 09:13:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:21,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:21,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:21,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456165511] [2024-02-02 09:13:21,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456165511] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:21,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:21,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:13:21,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726326049] [2024-02-02 09:13:21,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:21,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:13:21,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:21,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:13:21,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:13:21,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:13:21,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 240 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) [2024-02-02 09:13:21,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:21,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:13:21,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:21,993 INFO L124 PetriNetUnfolderBase]: 1344/2525 cut-off events. [2024-02-02 09:13:21,994 INFO L125 PetriNetUnfolderBase]: For 1087/1096 co-relation queries the response was YES. [2024-02-02 09:13:21,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5861 conditions, 2525 events. 1344/2525 cut-off events. For 1087/1096 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17166 event pairs, 990 based on Foata normal form. 33/2050 useless extension candidates. Maximal degree in co-relation 5838. Up to 2127 conditions per place. [2024-02-02 09:13:22,006 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 51 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-02-02 09:13:22,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 74 transitions, 397 flow [2024-02-02 09:13:22,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:13:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:13:22,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-02-02 09:13:22,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661764705882353 [2024-02-02 09:13:22,007 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 240 flow. Second operand 4 states and 154 transitions. [2024-02-02 09:13:22,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 74 transitions, 397 flow [2024-02-02 09:13:22,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 74 transitions, 397 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-02 09:13:22,010 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 290 flow [2024-02-02 09:13:22,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-02-02 09:13:22,010 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 4 predicate places. [2024-02-02 09:13:22,011 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 290 flow [2024-02-02 09:13:22,011 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) [2024-02-02 09:13:22,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:22,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:22,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 09:13:22,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:22,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash 861788781, now seen corresponding path program 1 times [2024-02-02 09:13:22,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:22,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302892607] [2024-02-02 09:13:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:22,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:22,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:22,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302892607] [2024-02-02 09:13:22,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302892607] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:22,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:22,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:13:22,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036212177] [2024-02-02 09:13:22,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:22,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:13:22,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:22,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:13:22,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:13:22,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:22,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 290 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) [2024-02-02 09:13:22,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:22,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:22,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:22,740 INFO L124 PetriNetUnfolderBase]: 1870/3350 cut-off events. [2024-02-02 09:13:22,740 INFO L125 PetriNetUnfolderBase]: For 1962/1980 co-relation queries the response was YES. [2024-02-02 09:13:22,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8262 conditions, 3350 events. 1870/3350 cut-off events. For 1962/1980 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22310 event pairs, 1288 based on Foata normal form. 27/2879 useless extension candidates. Maximal degree in co-relation 8235. Up to 2925 conditions per place. [2024-02-02 09:13:22,753 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 61 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2024-02-02 09:13:22,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 82 transitions, 486 flow [2024-02-02 09:13:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:13:22,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:13:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-02-02 09:13:22,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39215686274509803 [2024-02-02 09:13:22,755 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 290 flow. Second operand 6 states and 160 transitions. [2024-02-02 09:13:22,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 82 transitions, 486 flow [2024-02-02 09:13:22,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 82 transitions, 482 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-02-02 09:13:22,758 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 336 flow [2024-02-02 09:13:22,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-02-02 09:13:22,759 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2024-02-02 09:13:22,759 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 336 flow [2024-02-02 09:13:22,759 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) [2024-02-02 09:13:22,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:22,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:22,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 09:13:22,759 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:22,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:22,760 INFO L85 PathProgramCache]: Analyzing trace with hash 381735452, now seen corresponding path program 1 times [2024-02-02 09:13:22,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:22,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721992530] [2024-02-02 09:13:22,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:22,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:22,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:22,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721992530] [2024-02-02 09:13:22,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721992530] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:22,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:22,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:13:22,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593660887] [2024-02-02 09:13:22,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:22,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:13:22,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:22,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:13:22,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:13:22,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:22,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 336 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) [2024-02-02 09:13:22,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:22,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:22,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:23,359 INFO L124 PetriNetUnfolderBase]: 1880/3365 cut-off events. [2024-02-02 09:13:23,360 INFO L125 PetriNetUnfolderBase]: For 2176/2185 co-relation queries the response was YES. [2024-02-02 09:13:23,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8545 conditions, 3365 events. 1880/3365 cut-off events. For 2176/2185 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 22256 event pairs, 1273 based on Foata normal form. 15/2969 useless extension candidates. Maximal degree in co-relation 8514. Up to 2935 conditions per place. [2024-02-02 09:13:23,379 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 63 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-02-02 09:13:23,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 536 flow [2024-02-02 09:13:23,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:13:23,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:13:23,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-02-02 09:13:23,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42058823529411765 [2024-02-02 09:13:23,381 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 336 flow. Second operand 5 states and 143 transitions. [2024-02-02 09:13:23,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 536 flow [2024-02-02 09:13:23,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 84 transitions, 514 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-02 09:13:23,386 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 362 flow [2024-02-02 09:13:23,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-02-02 09:13:23,387 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2024-02-02 09:13:23,387 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 362 flow [2024-02-02 09:13:23,387 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) [2024-02-02 09:13:23,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:23,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:23,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-02 09:13:23,388 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:23,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash 62474830, now seen corresponding path program 2 times [2024-02-02 09:13:23,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:23,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059260412] [2024-02-02 09:13:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:23,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:23,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:23,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:23,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059260412] [2024-02-02 09:13:23,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059260412] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:23,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:23,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:13:23,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469968058] [2024-02-02 09:13:23,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:23,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:13:23,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:23,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:13:23,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:13:23,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:23,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 362 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) [2024-02-02 09:13:23,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:23,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:23,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:24,087 INFO L124 PetriNetUnfolderBase]: 1870/3335 cut-off events. [2024-02-02 09:13:24,087 INFO L125 PetriNetUnfolderBase]: For 2314/2323 co-relation queries the response was YES. [2024-02-02 09:13:24,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8552 conditions, 3335 events. 1870/3335 cut-off events. For 2314/2323 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 22084 event pairs, 1284 based on Foata normal form. 15/2937 useless extension candidates. Maximal degree in co-relation 8520. Up to 2932 conditions per place. [2024-02-02 09:13:24,109 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 59 selfloop transitions, 13 changer transitions 0/82 dead transitions. [2024-02-02 09:13:24,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 82 transitions, 541 flow [2024-02-02 09:13:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:13:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:13:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-02-02 09:13:24,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147058823529412 [2024-02-02 09:13:24,110 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 362 flow. Second operand 5 states and 141 transitions. [2024-02-02 09:13:24,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 82 transitions, 541 flow [2024-02-02 09:13:24,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 82 transitions, 517 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 09:13:24,115 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 377 flow [2024-02-02 09:13:24,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2024-02-02 09:13:24,115 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 15 predicate places. [2024-02-02 09:13:24,116 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 377 flow [2024-02-02 09:13:24,116 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) [2024-02-02 09:13:24,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:24,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:24,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 09:13:24,116 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:24,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:24,117 INFO L85 PathProgramCache]: Analyzing trace with hash -198331052, now seen corresponding path program 1 times [2024-02-02 09:13:24,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:24,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758684136] [2024-02-02 09:13:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:24,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:24,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758684136] [2024-02-02 09:13:24,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758684136] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:24,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:24,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:13:24,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072472381] [2024-02-02 09:13:24,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:24,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:13:24,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:24,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:13:24,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:13:24,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:24,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 377 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) [2024-02-02 09:13:24,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:24,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:24,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:24,812 INFO L124 PetriNetUnfolderBase]: 1886/3390 cut-off events. [2024-02-02 09:13:24,813 INFO L125 PetriNetUnfolderBase]: For 2453/2483 co-relation queries the response was YES. [2024-02-02 09:13:24,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8737 conditions, 3390 events. 1886/3390 cut-off events. For 2453/2483 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 22777 event pairs, 1426 based on Foata normal form. 16/2976 useless extension candidates. Maximal degree in co-relation 8704. Up to 2938 conditions per place. [2024-02-02 09:13:24,835 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 67 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2024-02-02 09:13:24,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 93 transitions, 621 flow [2024-02-02 09:13:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:13:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:13:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-02-02 09:13:24,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019607843137255 [2024-02-02 09:13:24,837 INFO L175 Difference]: Start difference. First operand has 87 places, 70 transitions, 377 flow. Second operand 6 states and 164 transitions. [2024-02-02 09:13:24,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 93 transitions, 621 flow [2024-02-02 09:13:24,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 612 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:13:24,841 INFO L231 Difference]: Finished difference. Result has 94 places, 76 transitions, 454 flow [2024-02-02 09:13:24,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=454, PETRI_PLACES=94, PETRI_TRANSITIONS=76} [2024-02-02 09:13:24,842 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 22 predicate places. [2024-02-02 09:13:24,842 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 76 transitions, 454 flow [2024-02-02 09:13:24,842 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) [2024-02-02 09:13:24,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:24,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:24,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-02 09:13:24,843 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:24,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:24,843 INFO L85 PathProgramCache]: Analyzing trace with hash -822195532, now seen corresponding path program 2 times [2024-02-02 09:13:24,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:24,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891187549] [2024-02-02 09:13:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:24,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:25,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:25,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891187549] [2024-02-02 09:13:25,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891187549] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:25,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:25,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:13:25,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476981534] [2024-02-02 09:13:25,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:25,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:13:25,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:25,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:13:25,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:13:25,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:25,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 76 transitions, 454 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) [2024-02-02 09:13:25,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:25,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:25,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:25,502 INFO L124 PetriNetUnfolderBase]: 1896/3406 cut-off events. [2024-02-02 09:13:25,503 INFO L125 PetriNetUnfolderBase]: For 2712/2749 co-relation queries the response was YES. [2024-02-02 09:13:25,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8908 conditions, 3406 events. 1896/3406 cut-off events. For 2712/2749 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 22949 event pairs, 1423 based on Foata normal form. 18/2997 useless extension candidates. Maximal degree in co-relation 8871. Up to 2947 conditions per place. [2024-02-02 09:13:25,519 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 65 selfloop transitions, 17 changer transitions 0/93 dead transitions. [2024-02-02 09:13:25,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 93 transitions, 673 flow [2024-02-02 09:13:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:13:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:13:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-02-02 09:13:25,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4235294117647059 [2024-02-02 09:13:25,522 INFO L175 Difference]: Start difference. First operand has 94 places, 76 transitions, 454 flow. Second operand 5 states and 144 transitions. [2024-02-02 09:13:25,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 93 transitions, 673 flow [2024-02-02 09:13:25,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 659 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-02 09:13:25,526 INFO L231 Difference]: Finished difference. Result has 98 places, 78 transitions, 498 flow [2024-02-02 09:13:25,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=98, PETRI_TRANSITIONS=78} [2024-02-02 09:13:25,527 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 26 predicate places. [2024-02-02 09:13:25,527 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 78 transitions, 498 flow [2024-02-02 09:13:25,527 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) [2024-02-02 09:13:25,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:25,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:25,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-02 09:13:25,528 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:25,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:25,528 INFO L85 PathProgramCache]: Analyzing trace with hash -821389222, now seen corresponding path program 3 times [2024-02-02 09:13:25,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:25,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951621731] [2024-02-02 09:13:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:25,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:25,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:25,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951621731] [2024-02-02 09:13:25,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951621731] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:25,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:25,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:13:25,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205648014] [2024-02-02 09:13:25,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:25,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:13:25,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:25,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:13:25,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:13:25,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:25,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 78 transitions, 498 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) [2024-02-02 09:13:25,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:25,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:25,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:26,135 INFO L124 PetriNetUnfolderBase]: 1886/3398 cut-off events. [2024-02-02 09:13:26,136 INFO L125 PetriNetUnfolderBase]: For 2982/2997 co-relation queries the response was YES. [2024-02-02 09:13:26,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8906 conditions, 3398 events. 1886/3398 cut-off events. For 2982/2997 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 22907 event pairs, 1417 based on Foata normal form. 18/2990 useless extension candidates. Maximal degree in co-relation 8867. Up to 2944 conditions per place. [2024-02-02 09:13:26,151 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 63 selfloop transitions, 16 changer transitions 0/90 dead transitions. [2024-02-02 09:13:26,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 90 transitions, 684 flow [2024-02-02 09:13:26,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:13:26,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:13:26,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-02-02 09:13:26,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-02-02 09:13:26,152 INFO L175 Difference]: Start difference. First operand has 98 places, 78 transitions, 498 flow. Second operand 5 states and 140 transitions. [2024-02-02 09:13:26,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 90 transitions, 684 flow [2024-02-02 09:13:26,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 90 transitions, 662 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 09:13:26,156 INFO L231 Difference]: Finished difference. Result has 100 places, 78 transitions, 513 flow [2024-02-02 09:13:26,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=513, PETRI_PLACES=100, PETRI_TRANSITIONS=78} [2024-02-02 09:13:26,157 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 28 predicate places. [2024-02-02 09:13:26,157 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 78 transitions, 513 flow [2024-02-02 09:13:26,157 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) [2024-02-02 09:13:26,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:26,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:26,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-02 09:13:26,158 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:26,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:26,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1719891015, now seen corresponding path program 1 times [2024-02-02 09:13:26,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:26,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529703084] [2024-02-02 09:13:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:26,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:26,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:26,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529703084] [2024-02-02 09:13:26,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529703084] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:26,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:26,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:13:26,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844264929] [2024-02-02 09:13:26,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:26,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:13:26,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:13:26,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:13:26,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:13:26,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 78 transitions, 513 flow. Second operand has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:26,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:26,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:13:26,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:26,686 INFO L124 PetriNetUnfolderBase]: 1267/2374 cut-off events. [2024-02-02 09:13:26,686 INFO L125 PetriNetUnfolderBase]: For 2708/2718 co-relation queries the response was YES. [2024-02-02 09:13:26,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6341 conditions, 2374 events. 1267/2374 cut-off events. For 2708/2718 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15857 event pairs, 647 based on Foata normal form. 34/2119 useless extension candidates. Maximal degree in co-relation 6302. Up to 1885 conditions per place. [2024-02-02 09:13:26,699 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 65 selfloop transitions, 17 changer transitions 0/101 dead transitions. [2024-02-02 09:13:26,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 101 transitions, 753 flow [2024-02-02 09:13:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:13:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:13:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-02-02 09:13:26,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705882352941176 [2024-02-02 09:13:26,701 INFO L175 Difference]: Start difference. First operand has 100 places, 78 transitions, 513 flow. Second operand 5 states and 194 transitions. [2024-02-02 09:13:26,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 101 transitions, 753 flow [2024-02-02 09:13:26,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 717 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-02 09:13:26,706 INFO L231 Difference]: Finished difference. Result has 102 places, 82 transitions, 551 flow [2024-02-02 09:13:26,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=551, PETRI_PLACES=102, PETRI_TRANSITIONS=82} [2024-02-02 09:13:26,706 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 30 predicate places. [2024-02-02 09:13:26,706 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 82 transitions, 551 flow [2024-02-02 09:13:26,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:26,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:26,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:26,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-02 09:13:26,707 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:26,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:26,708 INFO L85 PathProgramCache]: Analyzing trace with hash -74435309, now seen corresponding path program 2 times [2024-02-02 09:13:26,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:26,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074668391] [2024-02-02 09:13:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:26,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:26,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:26,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074668391] [2024-02-02 09:13:26,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074668391] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:26,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:26,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:13:26,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051448519] [2024-02-02 09:13:26,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:26,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:13:26,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:26,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:13:26,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:13:26,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:13:26,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 82 transitions, 551 flow. Second operand has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:26,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:26,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:13:26,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:27,298 INFO L124 PetriNetUnfolderBase]: 1251/2338 cut-off events. [2024-02-02 09:13:27,298 INFO L125 PetriNetUnfolderBase]: For 3700/3710 co-relation queries the response was YES. [2024-02-02 09:13:27,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6606 conditions, 2338 events. 1251/2338 cut-off events. For 3700/3710 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 15661 event pairs, 791 based on Foata normal form. 18/2147 useless extension candidates. Maximal degree in co-relation 6566. Up to 1937 conditions per place. [2024-02-02 09:13:27,314 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 60 selfloop transitions, 15 changer transitions 0/94 dead transitions. [2024-02-02 09:13:27,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 735 flow [2024-02-02 09:13:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:13:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:13:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-02-02 09:13:27,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772058823529411 [2024-02-02 09:13:27,317 INFO L175 Difference]: Start difference. First operand has 102 places, 82 transitions, 551 flow. Second operand 4 states and 157 transitions. [2024-02-02 09:13:27,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 735 flow [2024-02-02 09:13:27,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 94 transitions, 723 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-02-02 09:13:27,324 INFO L231 Difference]: Finished difference. Result has 105 places, 82 transitions, 581 flow [2024-02-02 09:13:27,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=581, PETRI_PLACES=105, PETRI_TRANSITIONS=82} [2024-02-02 09:13:27,326 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 33 predicate places. [2024-02-02 09:13:27,326 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 82 transitions, 581 flow [2024-02-02 09:13:27,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:27,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:27,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:27,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-02 09:13:27,327 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:27,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:27,327 INFO L85 PathProgramCache]: Analyzing trace with hash -74413485, now seen corresponding path program 1 times [2024-02-02 09:13:27,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:27,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644153991] [2024-02-02 09:13:27,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:27,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:27,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:27,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644153991] [2024-02-02 09:13:27,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644153991] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:27,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:27,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:13:27,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914135834] [2024-02-02 09:13:27,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:27,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:13:27,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:27,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:13:27,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:13:27,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:13:27,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 82 transitions, 581 flow. Second operand has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:27,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:27,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:13:27,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:27,928 INFO L124 PetriNetUnfolderBase]: 1291/2408 cut-off events. [2024-02-02 09:13:27,929 INFO L125 PetriNetUnfolderBase]: For 4358/4377 co-relation queries the response was YES. [2024-02-02 09:13:27,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6931 conditions, 2408 events. 1291/2408 cut-off events. For 4358/4377 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16074 event pairs, 815 based on Foata normal form. 35/2234 useless extension candidates. Maximal degree in co-relation 6889. Up to 2001 conditions per place. [2024-02-02 09:13:27,944 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 58 selfloop transitions, 17 changer transitions 0/94 dead transitions. [2024-02-02 09:13:27,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 94 transitions, 767 flow [2024-02-02 09:13:27,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:13:27,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:13:27,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-02-02 09:13:27,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5735294117647058 [2024-02-02 09:13:27,946 INFO L175 Difference]: Start difference. First operand has 105 places, 82 transitions, 581 flow. Second operand 4 states and 156 transitions. [2024-02-02 09:13:27,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 94 transitions, 767 flow [2024-02-02 09:13:27,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 94 transitions, 737 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:13:27,953 INFO L231 Difference]: Finished difference. Result has 106 places, 84 transitions, 614 flow [2024-02-02 09:13:27,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=614, PETRI_PLACES=106, PETRI_TRANSITIONS=84} [2024-02-02 09:13:27,954 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 34 predicate places. [2024-02-02 09:13:27,955 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 84 transitions, 614 flow [2024-02-02 09:13:27,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:27,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:27,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:27,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-02 09:13:27,955 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:27,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:27,956 INFO L85 PathProgramCache]: Analyzing trace with hash -914706889, now seen corresponding path program 1 times [2024-02-02 09:13:27,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:27,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355369343] [2024-02-02 09:13:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:27,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:28,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:28,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:28,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355369343] [2024-02-02 09:13:28,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355369343] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:28,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:28,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:28,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170562286] [2024-02-02 09:13:28,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:28,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:28,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:28,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:28,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:28,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:28,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 84 transitions, 614 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:28,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:28,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:28,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:28,681 INFO L124 PetriNetUnfolderBase]: 1794/3267 cut-off events. [2024-02-02 09:13:28,682 INFO L125 PetriNetUnfolderBase]: For 6111/6168 co-relation queries the response was YES. [2024-02-02 09:13:28,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9577 conditions, 3267 events. 1794/3267 cut-off events. For 6111/6168 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 21419 event pairs, 926 based on Foata normal form. 25/3023 useless extension candidates. Maximal degree in co-relation 9534. Up to 2634 conditions per place. [2024-02-02 09:13:28,700 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 80 selfloop transitions, 23 changer transitions 0/114 dead transitions. [2024-02-02 09:13:28,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 114 transitions, 897 flow [2024-02-02 09:13:28,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:13:28,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:13:28,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-02-02 09:13:28,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-02-02 09:13:28,702 INFO L175 Difference]: Start difference. First operand has 106 places, 84 transitions, 614 flow. Second operand 7 states and 196 transitions. [2024-02-02 09:13:28,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 114 transitions, 897 flow [2024-02-02 09:13:28,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 114 transitions, 866 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-02-02 09:13:28,710 INFO L231 Difference]: Finished difference. Result has 111 places, 84 transitions, 637 flow [2024-02-02 09:13:28,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=104, 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=7, PETRI_FLOW=637, PETRI_PLACES=111, PETRI_TRANSITIONS=84} [2024-02-02 09:13:28,710 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 39 predicate places. [2024-02-02 09:13:28,710 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 84 transitions, 637 flow [2024-02-02 09:13:28,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:28,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:28,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:28,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-02 09:13:28,711 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:28,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:28,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1463038319, now seen corresponding path program 1 times [2024-02-02 09:13:28,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:28,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893458575] [2024-02-02 09:13:28,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:28,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:28,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:28,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:28,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893458575] [2024-02-02 09:13:28,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893458575] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:28,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:28,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:28,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083718871] [2024-02-02 09:13:28,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:28,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:28,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:28,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:28,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:28,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:28,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 84 transitions, 637 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:28,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:28,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:28,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:29,358 INFO L124 PetriNetUnfolderBase]: 1819/3265 cut-off events. [2024-02-02 09:13:29,358 INFO L125 PetriNetUnfolderBase]: For 5855/5873 co-relation queries the response was YES. [2024-02-02 09:13:29,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9708 conditions, 3265 events. 1819/3265 cut-off events. For 5855/5873 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 20956 event pairs, 1054 based on Foata normal form. 21/3026 useless extension candidates. Maximal degree in co-relation 9664. Up to 2659 conditions per place. [2024-02-02 09:13:29,374 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 80 selfloop transitions, 21 changer transitions 0/112 dead transitions. [2024-02-02 09:13:29,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 935 flow [2024-02-02 09:13:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:13:29,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:13:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-02-02 09:13:29,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42892156862745096 [2024-02-02 09:13:29,376 INFO L175 Difference]: Start difference. First operand has 111 places, 84 transitions, 637 flow. Second operand 6 states and 175 transitions. [2024-02-02 09:13:29,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 935 flow [2024-02-02 09:13:29,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 112 transitions, 872 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-02-02 09:13:29,383 INFO L231 Difference]: Finished difference. Result has 111 places, 87 transitions, 654 flow [2024-02-02 09:13:29,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=654, PETRI_PLACES=111, PETRI_TRANSITIONS=87} [2024-02-02 09:13:29,383 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 39 predicate places. [2024-02-02 09:13:29,383 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 87 transitions, 654 flow [2024-02-02 09:13:29,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:29,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:29,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:29,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-02 09:13:29,384 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:29,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:29,384 INFO L85 PathProgramCache]: Analyzing trace with hash -90728017, now seen corresponding path program 2 times [2024-02-02 09:13:29,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:29,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776197617] [2024-02-02 09:13:29,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:29,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:29,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:29,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776197617] [2024-02-02 09:13:29,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776197617] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:29,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:29,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:29,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736703087] [2024-02-02 09:13:29,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:29,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:29,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:29,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:29,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:29,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:29,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 87 transitions, 654 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:29,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:29,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:29,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:30,148 INFO L124 PetriNetUnfolderBase]: 1989/3550 cut-off events. [2024-02-02 09:13:30,149 INFO L125 PetriNetUnfolderBase]: For 6556/6634 co-relation queries the response was YES. [2024-02-02 09:13:30,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10746 conditions, 3550 events. 1989/3550 cut-off events. For 6556/6634 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 23112 event pairs, 1190 based on Foata normal form. 58/3312 useless extension candidates. Maximal degree in co-relation 10701. Up to 3025 conditions per place. [2024-02-02 09:13:30,171 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 83 selfloop transitions, 21 changer transitions 0/116 dead transitions. [2024-02-02 09:13:30,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 116 transitions, 984 flow [2024-02-02 09:13:30,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:13:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:13:30,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-02-02 09:13:30,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949579831932773 [2024-02-02 09:13:30,173 INFO L175 Difference]: Start difference. First operand has 111 places, 87 transitions, 654 flow. Second operand 7 states and 188 transitions. [2024-02-02 09:13:30,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 116 transitions, 984 flow [2024-02-02 09:13:30,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 116 transitions, 934 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:13:30,183 INFO L231 Difference]: Finished difference. Result has 114 places, 93 transitions, 728 flow [2024-02-02 09:13:30,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=728, PETRI_PLACES=114, PETRI_TRANSITIONS=93} [2024-02-02 09:13:30,184 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 42 predicate places. [2024-02-02 09:13:30,184 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 93 transitions, 728 flow [2024-02-02 09:13:30,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:30,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:30,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:30,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-02 09:13:30,184 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:30,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:30,185 INFO L85 PathProgramCache]: Analyzing trace with hash -648338987, now seen corresponding path program 2 times [2024-02-02 09:13:30,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:30,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075405422] [2024-02-02 09:13:30,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:30,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:30,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:30,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075405422] [2024-02-02 09:13:30,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075405422] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:30,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:30,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:30,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153157755] [2024-02-02 09:13:30,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:30,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:30,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:30,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:30,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:30,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:30,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 93 transitions, 728 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:30,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:30,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:30,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:30,878 INFO L124 PetriNetUnfolderBase]: 1819/3283 cut-off events. [2024-02-02 09:13:30,878 INFO L125 PetriNetUnfolderBase]: For 6673/6691 co-relation queries the response was YES. [2024-02-02 09:13:30,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10127 conditions, 3283 events. 1819/3283 cut-off events. For 6673/6691 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21164 event pairs, 1163 based on Foata normal form. 51/3074 useless extension candidates. Maximal degree in co-relation 10081. Up to 2766 conditions per place. [2024-02-02 09:13:30,897 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 74 selfloop transitions, 23 changer transitions 0/108 dead transitions. [2024-02-02 09:13:30,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 108 transitions, 969 flow [2024-02-02 09:13:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:13:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:13:30,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-02-02 09:13:30,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2024-02-02 09:13:30,899 INFO L175 Difference]: Start difference. First operand has 114 places, 93 transitions, 728 flow. Second operand 6 states and 162 transitions. [2024-02-02 09:13:30,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 108 transitions, 969 flow [2024-02-02 09:13:30,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 108 transitions, 928 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-02-02 09:13:30,971 INFO L231 Difference]: Finished difference. Result has 116 places, 93 transitions, 745 flow [2024-02-02 09:13:30,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=745, PETRI_PLACES=116, PETRI_TRANSITIONS=93} [2024-02-02 09:13:30,972 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 44 predicate places. [2024-02-02 09:13:30,972 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 93 transitions, 745 flow [2024-02-02 09:13:30,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:30,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:30,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:30,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-02 09:13:30,974 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:30,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:30,975 INFO L85 PathProgramCache]: Analyzing trace with hash 103543259, now seen corresponding path program 1 times [2024-02-02 09:13:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:30,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163892872] [2024-02-02 09:13:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:30,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:31,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:31,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163892872] [2024-02-02 09:13:31,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163892872] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:31,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:31,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:31,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823693737] [2024-02-02 09:13:31,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:31,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:31,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:31,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:31,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:31,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:31,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 93 transitions, 745 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:31,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:31,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:31,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:31,711 INFO L124 PetriNetUnfolderBase]: 1929/3466 cut-off events. [2024-02-02 09:13:31,711 INFO L125 PetriNetUnfolderBase]: For 6828/6903 co-relation queries the response was YES. [2024-02-02 09:13:31,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10705 conditions, 3466 events. 1929/3466 cut-off events. For 6828/6903 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 22607 event pairs, 1139 based on Foata normal form. 43/3213 useless extension candidates. Maximal degree in co-relation 10658. Up to 2894 conditions per place. [2024-02-02 09:13:31,732 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 92 selfloop transitions, 21 changer transitions 0/125 dead transitions. [2024-02-02 09:13:31,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 125 transitions, 1058 flow [2024-02-02 09:13:31,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:13:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:13:31,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-02-02 09:13:31,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897058823529412 [2024-02-02 09:13:31,734 INFO L175 Difference]: Start difference. First operand has 116 places, 93 transitions, 745 flow. Second operand 8 states and 212 transitions. [2024-02-02 09:13:31,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 125 transitions, 1058 flow [2024-02-02 09:13:31,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 125 transitions, 1012 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-02 09:13:31,745 INFO L231 Difference]: Finished difference. Result has 119 places, 95 transitions, 756 flow [2024-02-02 09:13:31,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=756, PETRI_PLACES=119, PETRI_TRANSITIONS=95} [2024-02-02 09:13:31,745 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 47 predicate places. [2024-02-02 09:13:31,745 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 95 transitions, 756 flow [2024-02-02 09:13:31,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:31,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:31,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:31,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-02 09:13:31,746 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:31,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:31,746 INFO L85 PathProgramCache]: Analyzing trace with hash -629805353, now seen corresponding path program 1 times [2024-02-02 09:13:31,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:31,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399098164] [2024-02-02 09:13:31,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:31,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:31,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:31,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399098164] [2024-02-02 09:13:31,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399098164] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:31,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:31,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:31,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350954052] [2024-02-02 09:13:31,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:31,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:31,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:31,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:31,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:31,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:31,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 95 transitions, 756 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:31,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:31,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:31,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:32,455 INFO L124 PetriNetUnfolderBase]: 1819/3286 cut-off events. [2024-02-02 09:13:32,455 INFO L125 PetriNetUnfolderBase]: For 7040/7058 co-relation queries the response was YES. [2024-02-02 09:13:32,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10311 conditions, 3286 events. 1819/3286 cut-off events. For 7040/7058 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21245 event pairs, 1088 based on Foata normal form. 33/3059 useless extension candidates. Maximal degree in co-relation 10264. Up to 2739 conditions per place. [2024-02-02 09:13:32,474 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 74 selfloop transitions, 26 changer transitions 0/111 dead transitions. [2024-02-02 09:13:32,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 111 transitions, 997 flow [2024-02-02 09:13:32,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:13:32,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:13:32,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-02-02 09:13:32,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019607843137255 [2024-02-02 09:13:32,476 INFO L175 Difference]: Start difference. First operand has 119 places, 95 transitions, 756 flow. Second operand 6 states and 164 transitions. [2024-02-02 09:13:32,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 111 transitions, 997 flow [2024-02-02 09:13:32,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 111 transitions, 931 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-02-02 09:13:32,493 INFO L231 Difference]: Finished difference. Result has 118 places, 95 transitions, 762 flow [2024-02-02 09:13:32,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=762, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2024-02-02 09:13:32,494 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 46 predicate places. [2024-02-02 09:13:32,494 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 762 flow [2024-02-02 09:13:32,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:32,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:32,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:32,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-02-02 09:13:32,495 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:32,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:32,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1732391577, now seen corresponding path program 2 times [2024-02-02 09:13:32,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:32,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640602003] [2024-02-02 09:13:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:32,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:32,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:32,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640602003] [2024-02-02 09:13:32,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640602003] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:32,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:32,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:13:32,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463181245] [2024-02-02 09:13:32,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:32,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:13:32,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:32,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:13:32,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:13:32,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:13:32,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 95 transitions, 762 flow. Second operand has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:32,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:32,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:13:32,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:32,966 INFO L124 PetriNetUnfolderBase]: 1213/2294 cut-off events. [2024-02-02 09:13:32,966 INFO L125 PetriNetUnfolderBase]: For 6037/6068 co-relation queries the response was YES. [2024-02-02 09:13:32,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7557 conditions, 2294 events. 1213/2294 cut-off events. For 6037/6068 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 14919 event pairs, 747 based on Foata normal form. 47/2145 useless extension candidates. Maximal degree in co-relation 7510. Up to 1822 conditions per place. [2024-02-02 09:13:32,980 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 68 selfloop transitions, 23 changer transitions 0/111 dead transitions. [2024-02-02 09:13:32,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 111 transitions, 1000 flow [2024-02-02 09:13:32,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:13:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:13:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2024-02-02 09:13:32,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529411764705883 [2024-02-02 09:13:32,982 INFO L175 Difference]: Start difference. First operand has 118 places, 95 transitions, 762 flow. Second operand 5 states and 188 transitions. [2024-02-02 09:13:32,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 111 transitions, 1000 flow [2024-02-02 09:13:32,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 111 transitions, 930 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-02 09:13:32,991 INFO L231 Difference]: Finished difference. Result has 117 places, 97 transitions, 765 flow [2024-02-02 09:13:32,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=765, PETRI_PLACES=117, PETRI_TRANSITIONS=97} [2024-02-02 09:13:32,992 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 45 predicate places. [2024-02-02 09:13:32,992 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 97 transitions, 765 flow [2024-02-02 09:13:32,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:32,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:32,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:32,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-02-02 09:13:32,993 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:32,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:32,993 INFO L85 PathProgramCache]: Analyzing trace with hash 60605661, now seen corresponding path program 3 times [2024-02-02 09:13:32,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:32,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652917429] [2024-02-02 09:13:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:32,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:33,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652917429] [2024-02-02 09:13:33,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652917429] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:33,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:33,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:33,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300786176] [2024-02-02 09:13:33,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:33,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:33,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:33,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:33,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:33,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:33,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 97 transitions, 765 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:33,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:33,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:33,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:33,743 INFO L124 PetriNetUnfolderBase]: 1743/3151 cut-off events. [2024-02-02 09:13:33,743 INFO L125 PetriNetUnfolderBase]: For 7793/7880 co-relation queries the response was YES. [2024-02-02 09:13:33,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10322 conditions, 3151 events. 1743/3151 cut-off events. For 7793/7880 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 19983 event pairs, 997 based on Foata normal form. 55/2946 useless extension candidates. Maximal degree in co-relation 10275. Up to 2658 conditions per place. [2024-02-02 09:13:33,762 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 92 selfloop transitions, 25 changer transitions 0/129 dead transitions. [2024-02-02 09:13:33,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 129 transitions, 1130 flow [2024-02-02 09:13:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:13:33,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:13:33,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-02-02 09:13:33,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-02-02 09:13:33,763 INFO L175 Difference]: Start difference. First operand has 117 places, 97 transitions, 765 flow. Second operand 8 states and 210 transitions. [2024-02-02 09:13:33,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 129 transitions, 1130 flow [2024-02-02 09:13:33,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 129 transitions, 1079 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-02 09:13:33,776 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 855 flow [2024-02-02 09:13:33,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=855, PETRI_PLACES=122, PETRI_TRANSITIONS=103} [2024-02-02 09:13:33,777 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 50 predicate places. [2024-02-02 09:13:33,787 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 855 flow [2024-02-02 09:13:33,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:33,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:33,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:33,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-02-02 09:13:33,788 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:33,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:33,788 INFO L85 PathProgramCache]: Analyzing trace with hash 773118249, now seen corresponding path program 2 times [2024-02-02 09:13:33,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:33,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475837383] [2024-02-02 09:13:33,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:33,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:34,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:34,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475837383] [2024-02-02 09:13:34,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475837383] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:34,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:34,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:34,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910669452] [2024-02-02 09:13:34,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:34,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:34,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:34,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:34,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:34,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:34,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 103 transitions, 855 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:34,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:34,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:34,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:34,585 INFO L124 PetriNetUnfolderBase]: 1763/3195 cut-off events. [2024-02-02 09:13:34,585 INFO L125 PetriNetUnfolderBase]: For 8454/8537 co-relation queries the response was YES. [2024-02-02 09:13:34,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10635 conditions, 3195 events. 1763/3195 cut-off events. For 8454/8537 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 20364 event pairs, 997 based on Foata normal form. 43/2972 useless extension candidates. Maximal degree in co-relation 10587. Up to 2744 conditions per place. [2024-02-02 09:13:34,604 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 94 selfloop transitions, 19 changer transitions 0/125 dead transitions. [2024-02-02 09:13:34,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 125 transitions, 1136 flow [2024-02-02 09:13:34,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:13:34,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:13:34,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-02-02 09:13:34,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38865546218487396 [2024-02-02 09:13:34,606 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 855 flow. Second operand 7 states and 185 transitions. [2024-02-02 09:13:34,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 125 transitions, 1136 flow [2024-02-02 09:13:34,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 125 transitions, 1086 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-02-02 09:13:34,620 INFO L231 Difference]: Finished difference. Result has 124 places, 105 transitions, 862 flow [2024-02-02 09:13:34,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=862, PETRI_PLACES=124, PETRI_TRANSITIONS=105} [2024-02-02 09:13:34,620 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 52 predicate places. [2024-02-02 09:13:34,620 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 105 transitions, 862 flow [2024-02-02 09:13:34,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:34,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:34,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:34,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-02-02 09:13:34,621 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:34,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:34,621 INFO L85 PathProgramCache]: Analyzing trace with hash 796004553, now seen corresponding path program 2 times [2024-02-02 09:13:34,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:34,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771821616] [2024-02-02 09:13:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:34,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:34,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:34,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771821616] [2024-02-02 09:13:34,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771821616] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:34,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:34,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:34,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363144079] [2024-02-02 09:13:34,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:34,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:34,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:34,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:34,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:34,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:34,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 105 transitions, 862 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:34,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:34,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:34,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:35,323 INFO L124 PetriNetUnfolderBase]: 1667/3041 cut-off events. [2024-02-02 09:13:35,323 INFO L125 PetriNetUnfolderBase]: For 8605/8623 co-relation queries the response was YES. [2024-02-02 09:13:35,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10164 conditions, 3041 events. 1667/3041 cut-off events. For 8605/8623 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 19274 event pairs, 1008 based on Foata normal form. 27/2844 useless extension candidates. Maximal degree in co-relation 10116. Up to 2406 conditions per place. [2024-02-02 09:13:35,341 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 84 selfloop transitions, 32 changer transitions 0/127 dead transitions. [2024-02-02 09:13:35,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 127 transitions, 1155 flow [2024-02-02 09:13:35,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:13:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:13:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-02-02 09:13:35,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949579831932773 [2024-02-02 09:13:35,343 INFO L175 Difference]: Start difference. First operand has 124 places, 105 transitions, 862 flow. Second operand 7 states and 188 transitions. [2024-02-02 09:13:35,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 127 transitions, 1155 flow [2024-02-02 09:13:35,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 127 transitions, 1120 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:13:35,357 INFO L231 Difference]: Finished difference. Result has 126 places, 105 transitions, 900 flow [2024-02-02 09:13:35,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=900, PETRI_PLACES=126, PETRI_TRANSITIONS=105} [2024-02-02 09:13:35,357 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 54 predicate places. [2024-02-02 09:13:35,357 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 105 transitions, 900 flow [2024-02-02 09:13:35,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:35,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:35,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:35,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-02-02 09:13:35,358 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:35,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:35,358 INFO L85 PathProgramCache]: Analyzing trace with hash 83509975, now seen corresponding path program 3 times [2024-02-02 09:13:35,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:35,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467729018] [2024-02-02 09:13:35,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:35,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:35,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:35,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467729018] [2024-02-02 09:13:35,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467729018] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:35,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:35,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:35,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28503727] [2024-02-02 09:13:35,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:35,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:35,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:35,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:35,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:35,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:35,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 105 transitions, 900 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:35,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:35,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:35,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:36,131 INFO L124 PetriNetUnfolderBase]: 1753/3171 cut-off events. [2024-02-02 09:13:36,131 INFO L125 PetriNetUnfolderBase]: For 9082/9183 co-relation queries the response was YES. [2024-02-02 09:13:36,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10841 conditions, 3171 events. 1753/3171 cut-off events. For 9082/9183 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 20118 event pairs, 1002 based on Foata normal form. 66/2967 useless extension candidates. Maximal degree in co-relation 10792. Up to 2533 conditions per place. [2024-02-02 09:13:36,153 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 90 selfloop transitions, 29 changer transitions 0/131 dead transitions. [2024-02-02 09:13:36,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 131 transitions, 1211 flow [2024-02-02 09:13:36,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:13:36,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:13:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-02-02 09:13:36,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40336134453781514 [2024-02-02 09:13:36,155 INFO L175 Difference]: Start difference. First operand has 126 places, 105 transitions, 900 flow. Second operand 7 states and 192 transitions. [2024-02-02 09:13:36,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 131 transitions, 1211 flow [2024-02-02 09:13:36,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 131 transitions, 1143 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 09:13:36,173 INFO L231 Difference]: Finished difference. Result has 127 places, 107 transitions, 909 flow [2024-02-02 09:13:36,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=909, PETRI_PLACES=127, PETRI_TRANSITIONS=107} [2024-02-02 09:13:36,173 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 55 predicate places. [2024-02-02 09:13:36,173 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 107 transitions, 909 flow [2024-02-02 09:13:36,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:36,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:36,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:36,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-02-02 09:13:36,174 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:36,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash 121184125, now seen corresponding path program 4 times [2024-02-02 09:13:36,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:36,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957681902] [2024-02-02 09:13:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:36,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:36,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:36,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957681902] [2024-02-02 09:13:36,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957681902] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:36,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:36,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:36,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556446320] [2024-02-02 09:13:36,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:36,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:36,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:36,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:36,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:36,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:36,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 107 transitions, 909 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:36,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:36,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:36,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:37,012 INFO L124 PetriNetUnfolderBase]: 1733/3171 cut-off events. [2024-02-02 09:13:37,012 INFO L125 PetriNetUnfolderBase]: For 9338/9441 co-relation queries the response was YES. [2024-02-02 09:13:37,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10712 conditions, 3171 events. 1733/3171 cut-off events. For 9338/9441 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 20198 event pairs, 787 based on Foata normal form. 52/2969 useless extension candidates. Maximal degree in co-relation 10662. Up to 2546 conditions per place. [2024-02-02 09:13:37,074 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 81 selfloop transitions, 35 changer transitions 0/128 dead transitions. [2024-02-02 09:13:37,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 128 transitions, 1192 flow [2024-02-02 09:13:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:13:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:13:37,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-02-02 09:13:37,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41421568627450983 [2024-02-02 09:13:37,077 INFO L175 Difference]: Start difference. First operand has 127 places, 107 transitions, 909 flow. Second operand 6 states and 169 transitions. [2024-02-02 09:13:37,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 128 transitions, 1192 flow [2024-02-02 09:13:37,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 128 transitions, 1147 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-02 09:13:37,091 INFO L231 Difference]: Finished difference. Result has 129 places, 107 transitions, 960 flow [2024-02-02 09:13:37,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=960, PETRI_PLACES=129, PETRI_TRANSITIONS=107} [2024-02-02 09:13:37,094 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 57 predicate places. [2024-02-02 09:13:37,094 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 107 transitions, 960 flow [2024-02-02 09:13:37,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:37,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:37,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:37,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-02-02 09:13:37,095 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:37,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:37,095 INFO L85 PathProgramCache]: Analyzing trace with hash 121202999, now seen corresponding path program 4 times [2024-02-02 09:13:37,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:37,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815770115] [2024-02-02 09:13:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:37,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:37,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:37,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815770115] [2024-02-02 09:13:37,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815770115] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:37,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:37,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:37,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453447372] [2024-02-02 09:13:37,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:37,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:37,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:37,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:37,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:37,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:37,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 107 transitions, 960 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:37,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:37,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:37,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:37,834 INFO L124 PetriNetUnfolderBase]: 1723/3128 cut-off events. [2024-02-02 09:13:37,834 INFO L125 PetriNetUnfolderBase]: For 10602/10707 co-relation queries the response was YES. [2024-02-02 09:13:37,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10950 conditions, 3128 events. 1723/3128 cut-off events. For 10602/10707 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 19884 event pairs, 991 based on Foata normal form. 46/2905 useless extension candidates. Maximal degree in co-relation 10899. Up to 2628 conditions per place. [2024-02-02 09:13:37,855 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 89 selfloop transitions, 24 changer transitions 0/125 dead transitions. [2024-02-02 09:13:37,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 125 transitions, 1229 flow [2024-02-02 09:13:37,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:13:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:13:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-02-02 09:13:37,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019607843137255 [2024-02-02 09:13:37,857 INFO L175 Difference]: Start difference. First operand has 129 places, 107 transitions, 960 flow. Second operand 6 states and 164 transitions. [2024-02-02 09:13:37,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 125 transitions, 1229 flow [2024-02-02 09:13:37,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 125 transitions, 1151 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-02-02 09:13:37,878 INFO L231 Difference]: Finished difference. Result has 130 places, 107 transitions, 941 flow [2024-02-02 09:13:37,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=941, PETRI_PLACES=130, PETRI_TRANSITIONS=107} [2024-02-02 09:13:37,880 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 58 predicate places. [2024-02-02 09:13:37,881 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 107 transitions, 941 flow [2024-02-02 09:13:37,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:37,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:37,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:37,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-02-02 09:13:37,881 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:37,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:37,882 INFO L85 PathProgramCache]: Analyzing trace with hash 892140449, now seen corresponding path program 5 times [2024-02-02 09:13:37,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:37,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169581443] [2024-02-02 09:13:37,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:37,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:38,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169581443] [2024-02-02 09:13:38,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169581443] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:38,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:38,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:38,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403981639] [2024-02-02 09:13:38,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:38,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:38,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:38,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:38,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:38,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 107 transitions, 941 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:38,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:38,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:38,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:38,578 INFO L124 PetriNetUnfolderBase]: 1743/3152 cut-off events. [2024-02-02 09:13:38,578 INFO L125 PetriNetUnfolderBase]: For 9299/9401 co-relation queries the response was YES. [2024-02-02 09:13:38,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10733 conditions, 3152 events. 1743/3152 cut-off events. For 9299/9401 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 20023 event pairs, 987 based on Foata normal form. 72/2951 useless extension candidates. Maximal degree in co-relation 10681. Up to 2510 conditions per place. [2024-02-02 09:13:38,600 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 86 selfloop transitions, 32 changer transitions 0/130 dead transitions. [2024-02-02 09:13:38,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 1246 flow [2024-02-02 09:13:38,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:13:38,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:13:38,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-02-02 09:13:38,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-02-02 09:13:38,602 INFO L175 Difference]: Start difference. First operand has 130 places, 107 transitions, 941 flow. Second operand 6 states and 170 transitions. [2024-02-02 09:13:38,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 1246 flow [2024-02-02 09:13:38,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 130 transitions, 1187 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-02 09:13:38,622 INFO L231 Difference]: Finished difference. Result has 130 places, 109 transitions, 970 flow [2024-02-02 09:13:38,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=970, PETRI_PLACES=130, PETRI_TRANSITIONS=109} [2024-02-02 09:13:38,622 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 58 predicate places. [2024-02-02 09:13:38,623 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 109 transitions, 970 flow [2024-02-02 09:13:38,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:38,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:38,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:38,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-02-02 09:13:38,623 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:38,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash 918952349, now seen corresponding path program 6 times [2024-02-02 09:13:38,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:38,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033804080] [2024-02-02 09:13:38,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:38,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:38,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:38,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033804080] [2024-02-02 09:13:38,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033804080] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:38,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:38,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:38,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138360516] [2024-02-02 09:13:38,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:38,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:38,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:38,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:38,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:38,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:38,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 109 transitions, 970 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:38,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:38,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:38,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:39,274 INFO L124 PetriNetUnfolderBase]: 1769/3198 cut-off events. [2024-02-02 09:13:39,275 INFO L125 PetriNetUnfolderBase]: For 9658/9735 co-relation queries the response was YES. [2024-02-02 09:13:39,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10971 conditions, 3198 events. 1769/3198 cut-off events. For 9658/9735 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 20284 event pairs, 1003 based on Foata normal form. 73/2996 useless extension candidates. Maximal degree in co-relation 10919. Up to 2536 conditions per place. [2024-02-02 09:13:39,297 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 82 selfloop transitions, 39 changer transitions 0/133 dead transitions. [2024-02-02 09:13:39,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 133 transitions, 1310 flow [2024-02-02 09:13:39,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:13:39,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:13:39,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-02-02 09:13:39,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40931372549019607 [2024-02-02 09:13:39,298 INFO L175 Difference]: Start difference. First operand has 130 places, 109 transitions, 970 flow. Second operand 6 states and 167 transitions. [2024-02-02 09:13:39,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 133 transitions, 1310 flow [2024-02-02 09:13:39,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 133 transitions, 1238 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-02-02 09:13:39,316 INFO L231 Difference]: Finished difference. Result has 132 places, 116 transitions, 1068 flow [2024-02-02 09:13:39,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1068, PETRI_PLACES=132, PETRI_TRANSITIONS=116} [2024-02-02 09:13:39,317 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 60 predicate places. [2024-02-02 09:13:39,317 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 116 transitions, 1068 flow [2024-02-02 09:13:39,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:39,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:39,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:39,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-02-02 09:13:39,317 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:39,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:39,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1092593190, now seen corresponding path program 1 times [2024-02-02 09:13:39,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:39,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229558858] [2024-02-02 09:13:39,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:39,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:39,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:39,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229558858] [2024-02-02 09:13:39,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229558858] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:39,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:39,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:13:39,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432754890] [2024-02-02 09:13:39,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:39,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:13:39,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:39,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:13:39,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:13:39,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:13:39,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 116 transitions, 1068 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:39,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:39,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:13:39,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:39,813 INFO L124 PetriNetUnfolderBase]: 1224/2389 cut-off events. [2024-02-02 09:13:39,813 INFO L125 PetriNetUnfolderBase]: For 8868/8931 co-relation queries the response was YES. [2024-02-02 09:13:39,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8386 conditions, 2389 events. 1224/2389 cut-off events. For 8868/8931 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15802 event pairs, 715 based on Foata normal form. 45/2244 useless extension candidates. Maximal degree in co-relation 8334. Up to 1842 conditions per place. [2024-02-02 09:13:39,832 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 109 selfloop transitions, 21 changer transitions 0/151 dead transitions. [2024-02-02 09:13:39,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 151 transitions, 1561 flow [2024-02-02 09:13:39,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:13:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:13:39,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 221 transitions. [2024-02-02 09:13:39,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-02-02 09:13:39,834 INFO L175 Difference]: Start difference. First operand has 132 places, 116 transitions, 1068 flow. Second operand 6 states and 221 transitions. [2024-02-02 09:13:39,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 151 transitions, 1561 flow [2024-02-02 09:13:39,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 151 transitions, 1500 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-02 09:13:39,849 INFO L231 Difference]: Finished difference. Result has 136 places, 130 transitions, 1237 flow [2024-02-02 09:13:39,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1237, PETRI_PLACES=136, PETRI_TRANSITIONS=130} [2024-02-02 09:13:39,850 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 64 predicate places. [2024-02-02 09:13:39,850 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 130 transitions, 1237 flow [2024-02-02 09:13:39,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:39,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:39,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:39,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-02-02 09:13:39,851 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:39,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:39,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1619442474, now seen corresponding path program 1 times [2024-02-02 09:13:39,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:39,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010710723] [2024-02-02 09:13:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:39,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:40,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:40,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010710723] [2024-02-02 09:13:40,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010710723] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:40,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:40,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:13:40,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045480242] [2024-02-02 09:13:40,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:40,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:13:40,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:40,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:13:40,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:13:40,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:13:40,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 130 transitions, 1237 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:40,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:40,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:13:40,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:40,361 INFO L124 PetriNetUnfolderBase]: 1225/2343 cut-off events. [2024-02-02 09:13:40,361 INFO L125 PetriNetUnfolderBase]: For 8893/8956 co-relation queries the response was YES. [2024-02-02 09:13:40,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8380 conditions, 2343 events. 1225/2343 cut-off events. For 8893/8956 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 15247 event pairs, 706 based on Foata normal form. 61/2225 useless extension candidates. Maximal degree in co-relation 8326. Up to 1860 conditions per place. [2024-02-02 09:13:40,377 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 114 selfloop transitions, 28 changer transitions 0/163 dead transitions. [2024-02-02 09:13:40,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 163 transitions, 1764 flow [2024-02-02 09:13:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:13:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:13:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-02-02 09:13:40,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318627450980392 [2024-02-02 09:13:40,379 INFO L175 Difference]: Start difference. First operand has 136 places, 130 transitions, 1237 flow. Second operand 6 states and 217 transitions. [2024-02-02 09:13:40,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 163 transitions, 1764 flow [2024-02-02 09:13:40,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 163 transitions, 1762 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-02-02 09:13:40,393 INFO L231 Difference]: Finished difference. Result has 145 places, 149 transitions, 1547 flow [2024-02-02 09:13:40,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1547, PETRI_PLACES=145, PETRI_TRANSITIONS=149} [2024-02-02 09:13:40,393 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 73 predicate places. [2024-02-02 09:13:40,393 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 149 transitions, 1547 flow [2024-02-02 09:13:40,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:40,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:40,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:40,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-02-02 09:13:40,394 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:40,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:40,394 INFO L85 PathProgramCache]: Analyzing trace with hash 308207516, now seen corresponding path program 1 times [2024-02-02 09:13:40,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:40,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549194085] [2024-02-02 09:13:40,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:40,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:40,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:40,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549194085] [2024-02-02 09:13:40,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549194085] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:40,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:40,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:40,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483569817] [2024-02-02 09:13:40,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:40,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:40,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:40,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:40,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:40,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:13:40,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 149 transitions, 1547 flow. Second operand has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:40,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:40,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:13:40,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:41,061 INFO L124 PetriNetUnfolderBase]: 1419/2676 cut-off events. [2024-02-02 09:13:41,061 INFO L125 PetriNetUnfolderBase]: For 12101/12177 co-relation queries the response was YES. [2024-02-02 09:13:41,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9956 conditions, 2676 events. 1419/2676 cut-off events. For 12101/12177 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 17616 event pairs, 560 based on Foata normal form. 107/2649 useless extension candidates. Maximal degree in co-relation 9896. Up to 1725 conditions per place. [2024-02-02 09:13:41,084 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 93 selfloop transitions, 71 changer transitions 0/185 dead transitions. [2024-02-02 09:13:41,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 185 transitions, 2047 flow [2024-02-02 09:13:41,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:13:41,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:13:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 292 transitions. [2024-02-02 09:13:41,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367647058823529 [2024-02-02 09:13:41,086 INFO L175 Difference]: Start difference. First operand has 145 places, 149 transitions, 1547 flow. Second operand 8 states and 292 transitions. [2024-02-02 09:13:41,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 185 transitions, 2047 flow [2024-02-02 09:13:41,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 185 transitions, 2041 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-02-02 09:13:41,109 INFO L231 Difference]: Finished difference. Result has 154 places, 153 transitions, 1734 flow [2024-02-02 09:13:41,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1734, PETRI_PLACES=154, PETRI_TRANSITIONS=153} [2024-02-02 09:13:41,112 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 82 predicate places. [2024-02-02 09:13:41,112 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 153 transitions, 1734 flow [2024-02-02 09:13:41,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:41,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:41,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:41,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-02-02 09:13:41,113 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:41,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:41,114 INFO L85 PathProgramCache]: Analyzing trace with hash -714673632, now seen corresponding path program 2 times [2024-02-02 09:13:41,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:41,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583546850] [2024-02-02 09:13:41,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:41,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:41,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:41,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583546850] [2024-02-02 09:13:41,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583546850] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:41,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:41,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:41,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103555758] [2024-02-02 09:13:41,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:41,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:41,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:41,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:41,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:41,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:13:41,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 153 transitions, 1734 flow. Second operand has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:41,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:41,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:13:41,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:41,884 INFO L124 PetriNetUnfolderBase]: 1499/2810 cut-off events. [2024-02-02 09:13:41,885 INFO L125 PetriNetUnfolderBase]: For 15325/15401 co-relation queries the response was YES. [2024-02-02 09:13:41,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11119 conditions, 2810 events. 1499/2810 cut-off events. For 15325/15401 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 18598 event pairs, 631 based on Foata normal form. 75/2751 useless extension candidates. Maximal degree in co-relation 11055. Up to 1878 conditions per place. [2024-02-02 09:13:41,907 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 91 selfloop transitions, 69 changer transitions 0/181 dead transitions. [2024-02-02 09:13:41,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 181 transitions, 2202 flow [2024-02-02 09:13:41,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:13:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:13:41,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-02-02 09:13:41,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5612745098039216 [2024-02-02 09:13:41,908 INFO L175 Difference]: Start difference. First operand has 154 places, 153 transitions, 1734 flow. Second operand 6 states and 229 transitions. [2024-02-02 09:13:41,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 181 transitions, 2202 flow [2024-02-02 09:13:41,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 181 transitions, 2105 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-02-02 09:13:41,937 INFO L231 Difference]: Finished difference. Result has 156 places, 155 transitions, 1803 flow [2024-02-02 09:13:41,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1803, PETRI_PLACES=156, PETRI_TRANSITIONS=155} [2024-02-02 09:13:41,937 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 84 predicate places. [2024-02-02 09:13:41,938 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 155 transitions, 1803 flow [2024-02-02 09:13:41,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:41,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:41,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:41,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-02-02 09:13:41,938 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:41,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1502391874, now seen corresponding path program 3 times [2024-02-02 09:13:41,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:41,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577858466] [2024-02-02 09:13:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:41,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:42,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:42,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577858466] [2024-02-02 09:13:42,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577858466] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:42,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:42,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:42,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213206620] [2024-02-02 09:13:42,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:42,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:42,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:42,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:42,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:42,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:13:42,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 155 transitions, 1803 flow. Second operand has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:42,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:42,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:13:42,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:42,659 INFO L124 PetriNetUnfolderBase]: 1467/2762 cut-off events. [2024-02-02 09:13:42,659 INFO L125 PetriNetUnfolderBase]: For 15475/15551 co-relation queries the response was YES. [2024-02-02 09:13:42,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 2762 events. 1467/2762 cut-off events. For 15475/15551 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 18249 event pairs, 611 based on Foata normal form. 75/2703 useless extension candidates. Maximal degree in co-relation 10968. Up to 1870 conditions per place. [2024-02-02 09:13:42,682 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 93 selfloop transitions, 69 changer transitions 0/183 dead transitions. [2024-02-02 09:13:42,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 183 transitions, 2247 flow [2024-02-02 09:13:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:13:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:13:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 258 transitions. [2024-02-02 09:13:42,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.542016806722689 [2024-02-02 09:13:42,683 INFO L175 Difference]: Start difference. First operand has 156 places, 155 transitions, 1803 flow. Second operand 7 states and 258 transitions. [2024-02-02 09:13:42,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 183 transitions, 2247 flow [2024-02-02 09:13:42,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 183 transitions, 2146 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-02-02 09:13:42,710 INFO L231 Difference]: Finished difference. Result has 160 places, 155 transitions, 1850 flow [2024-02-02 09:13:42,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1850, PETRI_PLACES=160, PETRI_TRANSITIONS=155} [2024-02-02 09:13:42,711 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 88 predicate places. [2024-02-02 09:13:42,711 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 155 transitions, 1850 flow [2024-02-02 09:13:42,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:42,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:42,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:42,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-02-02 09:13:42,712 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:42,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:42,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1435001812, now seen corresponding path program 1 times [2024-02-02 09:13:42,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:42,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249214435] [2024-02-02 09:13:42,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:42,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:42,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:42,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249214435] [2024-02-02 09:13:42,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249214435] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:42,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:42,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:13:42,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497834839] [2024-02-02 09:13:42,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:42,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:13:42,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:42,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:13:42,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:13:42,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:42,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 155 transitions, 1850 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:42,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:42,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:42,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:43,647 INFO L124 PetriNetUnfolderBase]: 2030/3646 cut-off events. [2024-02-02 09:13:43,648 INFO L125 PetriNetUnfolderBase]: For 18976/19116 co-relation queries the response was YES. [2024-02-02 09:13:43,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14363 conditions, 3646 events. 2030/3646 cut-off events. For 18976/19116 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 23190 event pairs, 826 based on Foata normal form. 72/3545 useless extension candidates. Maximal degree in co-relation 14296. Up to 2325 conditions per place. [2024-02-02 09:13:43,681 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 121 selfloop transitions, 69 changer transitions 0/202 dead transitions. [2024-02-02 09:13:43,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 202 transitions, 2400 flow [2024-02-02 09:13:43,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:13:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:13:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-02-02 09:13:43,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941176470588235 [2024-02-02 09:13:43,683 INFO L175 Difference]: Start difference. First operand has 160 places, 155 transitions, 1850 flow. Second operand 10 states and 268 transitions. [2024-02-02 09:13:43,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 202 transitions, 2400 flow [2024-02-02 09:13:43,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 202 transitions, 2215 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-02-02 09:13:43,724 INFO L231 Difference]: Finished difference. Result has 163 places, 155 transitions, 1810 flow [2024-02-02 09:13:43,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1810, PETRI_PLACES=163, PETRI_TRANSITIONS=155} [2024-02-02 09:13:43,725 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 91 predicate places. [2024-02-02 09:13:43,725 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 155 transitions, 1810 flow [2024-02-02 09:13:43,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:43,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:43,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:43,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-02-02 09:13:43,726 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:43,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:43,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2107274835, now seen corresponding path program 1 times [2024-02-02 09:13:43,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:43,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653118138] [2024-02-02 09:13:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:43,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:43,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:43,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653118138] [2024-02-02 09:13:43,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653118138] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:43,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:43,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:43,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922496846] [2024-02-02 09:13:43,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:43,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:43,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:43,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:43,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:43,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:43,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 155 transitions, 1810 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:43,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:43,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:43,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:44,512 INFO L124 PetriNetUnfolderBase]: 1993/3590 cut-off events. [2024-02-02 09:13:44,512 INFO L125 PetriNetUnfolderBase]: For 18813/18849 co-relation queries the response was YES. [2024-02-02 09:13:44,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14285 conditions, 3590 events. 1993/3590 cut-off events. For 18813/18849 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 22974 event pairs, 964 based on Foata normal form. 37/3466 useless extension candidates. Maximal degree in co-relation 14217. Up to 2926 conditions per place. [2024-02-02 09:13:44,535 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 149 selfloop transitions, 27 changer transitions 0/188 dead transitions. [2024-02-02 09:13:44,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 188 transitions, 2304 flow [2024-02-02 09:13:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:13:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:13:44,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-02-02 09:13:44,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40336134453781514 [2024-02-02 09:13:44,537 INFO L175 Difference]: Start difference. First operand has 163 places, 155 transitions, 1810 flow. Second operand 7 states and 192 transitions. [2024-02-02 09:13:44,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 188 transitions, 2304 flow [2024-02-02 09:13:44,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 188 transitions, 2166 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-02 09:13:44,571 INFO L231 Difference]: Finished difference. Result has 162 places, 162 transitions, 1784 flow [2024-02-02 09:13:44,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1784, PETRI_PLACES=162, PETRI_TRANSITIONS=162} [2024-02-02 09:13:44,571 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 90 predicate places. [2024-02-02 09:13:44,571 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 162 transitions, 1784 flow [2024-02-02 09:13:44,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:44,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:44,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:44,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-02-02 09:13:44,572 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:44,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:44,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1383620601, now seen corresponding path program 2 times [2024-02-02 09:13:44,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:44,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325199329] [2024-02-02 09:13:44,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:44,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:44,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:44,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325199329] [2024-02-02 09:13:44,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325199329] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:44,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:44,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:44,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587708855] [2024-02-02 09:13:44,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:44,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:44,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:44,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:44,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:44,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:44,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 162 transitions, 1784 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:44,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:44,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:44,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:45,329 INFO L124 PetriNetUnfolderBase]: 1987/3580 cut-off events. [2024-02-02 09:13:45,330 INFO L125 PetriNetUnfolderBase]: For 17743/17779 co-relation queries the response was YES. [2024-02-02 09:13:45,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14051 conditions, 3580 events. 1987/3580 cut-off events. For 17743/17779 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 22932 event pairs, 966 based on Foata normal form. 37/3456 useless extension candidates. Maximal degree in co-relation 13981. Up to 2926 conditions per place. [2024-02-02 09:13:45,357 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 148 selfloop transitions, 28 changer transitions 0/188 dead transitions. [2024-02-02 09:13:45,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 188 transitions, 2236 flow [2024-02-02 09:13:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:13:45,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:13:45,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-02-02 09:13:45,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40336134453781514 [2024-02-02 09:13:45,358 INFO L175 Difference]: Start difference. First operand has 162 places, 162 transitions, 1784 flow. Second operand 7 states and 192 transitions. [2024-02-02 09:13:45,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 188 transitions, 2236 flow [2024-02-02 09:13:45,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 188 transitions, 2198 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 09:13:45,399 INFO L231 Difference]: Finished difference. Result has 166 places, 162 transitions, 1807 flow [2024-02-02 09:13:45,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1807, PETRI_PLACES=166, PETRI_TRANSITIONS=162} [2024-02-02 09:13:45,400 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 94 predicate places. [2024-02-02 09:13:45,400 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 162 transitions, 1807 flow [2024-02-02 09:13:45,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:45,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:45,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:45,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-02-02 09:13:45,401 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:45,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:45,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1092884810, now seen corresponding path program 1 times [2024-02-02 09:13:45,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:45,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937210310] [2024-02-02 09:13:45,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:45,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:45,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:45,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937210310] [2024-02-02 09:13:45,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937210310] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:45,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:45,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:13:45,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183978169] [2024-02-02 09:13:45,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:45,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:13:45,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:45,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:13:45,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:13:45,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:45,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 162 transitions, 1807 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:45,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:45,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:45,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:46,418 INFO L124 PetriNetUnfolderBase]: 2067/3734 cut-off events. [2024-02-02 09:13:46,418 INFO L125 PetriNetUnfolderBase]: For 18408/18444 co-relation queries the response was YES. [2024-02-02 09:13:46,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14645 conditions, 3734 events. 2067/3734 cut-off events. For 18408/18444 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 24190 event pairs, 741 based on Foata normal form. 45/3618 useless extension candidates. Maximal degree in co-relation 14574. Up to 2274 conditions per place. [2024-02-02 09:13:46,444 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 121 selfloop transitions, 81 changer transitions 0/214 dead transitions. [2024-02-02 09:13:46,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 214 transitions, 2415 flow [2024-02-02 09:13:46,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:13:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:13:46,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-02-02 09:13:46,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40294117647058825 [2024-02-02 09:13:46,447 INFO L175 Difference]: Start difference. First operand has 166 places, 162 transitions, 1807 flow. Second operand 10 states and 274 transitions. [2024-02-02 09:13:46,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 214 transitions, 2415 flow [2024-02-02 09:13:46,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 214 transitions, 2359 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-02 09:13:46,491 INFO L231 Difference]: Finished difference. Result has 172 places, 167 transitions, 1957 flow [2024-02-02 09:13:46,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1957, PETRI_PLACES=172, PETRI_TRANSITIONS=167} [2024-02-02 09:13:46,493 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 100 predicate places. [2024-02-02 09:13:46,493 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 167 transitions, 1957 flow [2024-02-02 09:13:46,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:46,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:46,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:46,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-02-02 09:13:46,494 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:46,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:46,494 INFO L85 PathProgramCache]: Analyzing trace with hash -665617100, now seen corresponding path program 2 times [2024-02-02 09:13:46,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:46,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916623692] [2024-02-02 09:13:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:46,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:46,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:46,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916623692] [2024-02-02 09:13:46,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916623692] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:46,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:46,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:13:46,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438115506] [2024-02-02 09:13:46,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:46,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:13:46,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:46,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:13:46,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:13:46,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:46,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 167 transitions, 1957 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:46,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:46,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:46,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:47,655 INFO L124 PetriNetUnfolderBase]: 2625/4609 cut-off events. [2024-02-02 09:13:47,655 INFO L125 PetriNetUnfolderBase]: For 23679/23966 co-relation queries the response was YES. [2024-02-02 09:13:47,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19208 conditions, 4609 events. 2625/4609 cut-off events. For 23679/23966 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 30047 event pairs, 1130 based on Foata normal form. 96/4495 useless extension candidates. Maximal degree in co-relation 19135. Up to 3463 conditions per place. [2024-02-02 09:13:47,699 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 149 selfloop transitions, 51 changer transitions 0/216 dead transitions. [2024-02-02 09:13:47,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 216 transitions, 2601 flow [2024-02-02 09:13:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:13:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:13:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-02-02 09:13:47,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38676470588235295 [2024-02-02 09:13:47,701 INFO L175 Difference]: Start difference. First operand has 172 places, 167 transitions, 1957 flow. Second operand 10 states and 263 transitions. [2024-02-02 09:13:47,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 216 transitions, 2601 flow [2024-02-02 09:13:47,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 216 transitions, 2457 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 09:13:47,761 INFO L231 Difference]: Finished difference. Result has 176 places, 173 transitions, 2002 flow [2024-02-02 09:13:47,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2002, PETRI_PLACES=176, PETRI_TRANSITIONS=173} [2024-02-02 09:13:47,762 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 104 predicate places. [2024-02-02 09:13:47,762 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 173 transitions, 2002 flow [2024-02-02 09:13:47,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:47,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:47,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:47,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-02-02 09:13:47,763 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:47,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:47,763 INFO L85 PathProgramCache]: Analyzing trace with hash -726734419, now seen corresponding path program 3 times [2024-02-02 09:13:47,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:47,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929994730] [2024-02-02 09:13:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:47,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:47,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:47,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929994730] [2024-02-02 09:13:47,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929994730] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:47,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:47,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:47,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451741979] [2024-02-02 09:13:47,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:47,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:47,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:47,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:47,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:48,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:48,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 173 transitions, 2002 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:48,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:48,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:48,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:48,768 INFO L124 PetriNetUnfolderBase]: 2341/4160 cut-off events. [2024-02-02 09:13:48,769 INFO L125 PetriNetUnfolderBase]: For 24031/24085 co-relation queries the response was YES. [2024-02-02 09:13:48,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18007 conditions, 4160 events. 2341/4160 cut-off events. For 24031/24085 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 27572 event pairs, 1068 based on Foata normal form. 37/4034 useless extension candidates. Maximal degree in co-relation 17932. Up to 3502 conditions per place. [2024-02-02 09:13:48,806 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 155 selfloop transitions, 32 changer transitions 0/199 dead transitions. [2024-02-02 09:13:48,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 199 transitions, 2484 flow [2024-02-02 09:13:48,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:13:48,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:13:48,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-02-02 09:13:48,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2024-02-02 09:13:48,807 INFO L175 Difference]: Start difference. First operand has 176 places, 173 transitions, 2002 flow. Second operand 7 states and 189 transitions. [2024-02-02 09:13:48,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 199 transitions, 2484 flow [2024-02-02 09:13:48,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 199 transitions, 2395 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-02-02 09:13:48,858 INFO L231 Difference]: Finished difference. Result has 177 places, 179 transitions, 2044 flow [2024-02-02 09:13:48,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2044, PETRI_PLACES=177, PETRI_TRANSITIONS=179} [2024-02-02 09:13:48,858 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 105 predicate places. [2024-02-02 09:13:48,859 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 179 transitions, 2044 flow [2024-02-02 09:13:48,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:48,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:48,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:48,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-02-02 09:13:48,859 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:48,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:48,860 INFO L85 PathProgramCache]: Analyzing trace with hash -664982840, now seen corresponding path program 3 times [2024-02-02 09:13:48,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:48,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144281729] [2024-02-02 09:13:48,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:48,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:49,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:49,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144281729] [2024-02-02 09:13:49,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144281729] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:49,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:49,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:13:49,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062887905] [2024-02-02 09:13:49,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:49,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:13:49,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:49,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:13:49,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:13:49,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:49,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 179 transitions, 2044 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:49,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:49,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:49,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:49,965 INFO L124 PetriNetUnfolderBase]: 2540/4461 cut-off events. [2024-02-02 09:13:49,965 INFO L125 PetriNetUnfolderBase]: For 23717/23964 co-relation queries the response was YES. [2024-02-02 09:13:49,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18730 conditions, 4461 events. 2540/4461 cut-off events. For 23717/23964 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 28937 event pairs, 1102 based on Foata normal form. 115/4367 useless extension candidates. Maximal degree in co-relation 18653. Up to 3440 conditions per place. [2024-02-02 09:13:50,006 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 157 selfloop transitions, 51 changer transitions 0/226 dead transitions. [2024-02-02 09:13:50,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 226 transitions, 2656 flow [2024-02-02 09:13:50,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:13:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:13:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-02-02 09:13:50,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783422459893048 [2024-02-02 09:13:50,008 INFO L175 Difference]: Start difference. First operand has 177 places, 179 transitions, 2044 flow. Second operand 11 states and 283 transitions. [2024-02-02 09:13:50,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 226 transitions, 2656 flow [2024-02-02 09:13:50,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 226 transitions, 2618 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-02-02 09:13:50,067 INFO L231 Difference]: Finished difference. Result has 186 places, 179 transitions, 2120 flow [2024-02-02 09:13:50,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2120, PETRI_PLACES=186, PETRI_TRANSITIONS=179} [2024-02-02 09:13:50,068 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 114 predicate places. [2024-02-02 09:13:50,068 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 179 transitions, 2120 flow [2024-02-02 09:13:50,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:50,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:50,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:50,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-02-02 09:13:50,068 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:50,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:50,069 INFO L85 PathProgramCache]: Analyzing trace with hash -283495496, now seen corresponding path program 2 times [2024-02-02 09:13:50,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:50,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621066385] [2024-02-02 09:13:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:50,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:50,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:50,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621066385] [2024-02-02 09:13:50,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621066385] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:50,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:50,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:13:50,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689999512] [2024-02-02 09:13:50,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:50,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:13:50,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:50,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:13:50,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:13:50,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:50,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 179 transitions, 2120 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:50,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:50,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:50,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:51,051 INFO L124 PetriNetUnfolderBase]: 2171/3915 cut-off events. [2024-02-02 09:13:51,052 INFO L125 PetriNetUnfolderBase]: For 24616/24670 co-relation queries the response was YES. [2024-02-02 09:13:51,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17061 conditions, 3915 events. 2171/3915 cut-off events. For 24616/24670 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 25820 event pairs, 844 based on Foata normal form. 69/3823 useless extension candidates. Maximal degree in co-relation 16982. Up to 2462 conditions per place. [2024-02-02 09:13:51,083 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 120 selfloop transitions, 77 changer transitions 0/209 dead transitions. [2024-02-02 09:13:51,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 209 transitions, 2671 flow [2024-02-02 09:13:51,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:13:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:13:51,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-02-02 09:13:51,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025735294117647 [2024-02-02 09:13:51,085 INFO L175 Difference]: Start difference. First operand has 186 places, 179 transitions, 2120 flow. Second operand 8 states and 219 transitions. [2024-02-02 09:13:51,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 209 transitions, 2671 flow [2024-02-02 09:13:51,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 209 transitions, 2564 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-02 09:13:51,140 INFO L231 Difference]: Finished difference. Result has 184 places, 179 transitions, 2181 flow [2024-02-02 09:13:51,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2181, PETRI_PLACES=184, PETRI_TRANSITIONS=179} [2024-02-02 09:13:51,141 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 112 predicate places. [2024-02-02 09:13:51,141 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 179 transitions, 2181 flow [2024-02-02 09:13:51,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:51,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:51,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:51,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-02-02 09:13:51,141 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:51,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:51,142 INFO L85 PathProgramCache]: Analyzing trace with hash 720859502, now seen corresponding path program 3 times [2024-02-02 09:13:51,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:51,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199425994] [2024-02-02 09:13:51,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:51,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:51,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:51,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:51,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199425994] [2024-02-02 09:13:51,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199425994] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:51,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:51,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:13:51,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253843101] [2024-02-02 09:13:51,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:51,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:13:51,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:51,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:13:51,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:13:51,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:51,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 179 transitions, 2181 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:51,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:51,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:51,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:52,070 INFO L124 PetriNetUnfolderBase]: 2051/3723 cut-off events. [2024-02-02 09:13:52,071 INFO L125 PetriNetUnfolderBase]: For 25182/25236 co-relation queries the response was YES. [2024-02-02 09:13:52,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16438 conditions, 3723 events. 2051/3723 cut-off events. For 25182/25236 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 24343 event pairs, 796 based on Foata normal form. 105/3667 useless extension candidates. Maximal degree in co-relation 16358. Up to 2438 conditions per place. [2024-02-02 09:13:52,103 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 121 selfloop transitions, 77 changer transitions 0/210 dead transitions. [2024-02-02 09:13:52,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 210 transitions, 2728 flow [2024-02-02 09:13:52,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:13:52,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:13:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-02-02 09:13:52,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872549019607843 [2024-02-02 09:13:52,105 INFO L175 Difference]: Start difference. First operand has 184 places, 179 transitions, 2181 flow. Second operand 9 states and 237 transitions. [2024-02-02 09:13:52,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 210 transitions, 2728 flow [2024-02-02 09:13:52,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 210 transitions, 2574 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 09:13:52,160 INFO L231 Difference]: Finished difference. Result has 186 places, 179 transitions, 2199 flow [2024-02-02 09:13:52,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2199, PETRI_PLACES=186, PETRI_TRANSITIONS=179} [2024-02-02 09:13:52,161 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 114 predicate places. [2024-02-02 09:13:52,161 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 179 transitions, 2199 flow [2024-02-02 09:13:52,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:52,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:52,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:52,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-02-02 09:13:52,162 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:52,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:52,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1503090752, now seen corresponding path program 4 times [2024-02-02 09:13:52,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:52,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285251703] [2024-02-02 09:13:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:52,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:52,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:52,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285251703] [2024-02-02 09:13:52,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285251703] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:52,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:52,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:52,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562590316] [2024-02-02 09:13:52,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:52,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:52,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:52,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:52,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:52,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:13:52,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 179 transitions, 2199 flow. Second operand has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:52,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:52,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:13:52,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:52,876 INFO L124 PetriNetUnfolderBase]: 1363/2566 cut-off events. [2024-02-02 09:13:52,877 INFO L125 PetriNetUnfolderBase]: For 21494/21638 co-relation queries the response was YES. [2024-02-02 09:13:52,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11907 conditions, 2566 events. 1363/2566 cut-off events. For 21494/21638 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16267 event pairs, 446 based on Foata normal form. 123/2579 useless extension candidates. Maximal degree in co-relation 11826. Up to 1457 conditions per place. [2024-02-02 09:13:52,898 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 98 selfloop transitions, 85 changer transitions 0/210 dead transitions. [2024-02-02 09:13:52,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 210 transitions, 2743 flow [2024-02-02 09:13:52,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:13:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:13:52,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 288 transitions. [2024-02-02 09:13:52,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-02-02 09:13:52,899 INFO L175 Difference]: Start difference. First operand has 186 places, 179 transitions, 2199 flow. Second operand 8 states and 288 transitions. [2024-02-02 09:13:52,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 210 transitions, 2743 flow [2024-02-02 09:13:52,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 210 transitions, 2589 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-02 09:13:52,936 INFO L231 Difference]: Finished difference. Result has 186 places, 181 transitions, 2244 flow [2024-02-02 09:13:52,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2244, PETRI_PLACES=186, PETRI_TRANSITIONS=181} [2024-02-02 09:13:52,937 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 114 predicate places. [2024-02-02 09:13:52,937 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 181 transitions, 2244 flow [2024-02-02 09:13:52,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:52,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:52,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:52,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-02-02 09:13:52,938 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:52,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:52,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2121675522, now seen corresponding path program 4 times [2024-02-02 09:13:52,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:52,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748846625] [2024-02-02 09:13:52,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:52,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:53,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:53,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748846625] [2024-02-02 09:13:53,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748846625] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:53,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:53,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:13:53,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098947683] [2024-02-02 09:13:53,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:53,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:13:53,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:53,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:13:53,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:13:53,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:53,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 181 transitions, 2244 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:53,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:53,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:53,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:53,900 INFO L124 PetriNetUnfolderBase]: 2040/3619 cut-off events. [2024-02-02 09:13:53,901 INFO L125 PetriNetUnfolderBase]: For 24822/25060 co-relation queries the response was YES. [2024-02-02 09:13:53,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16700 conditions, 3619 events. 2040/3619 cut-off events. For 24822/25060 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 22548 event pairs, 696 based on Foata normal form. 118/3571 useless extension candidates. Maximal degree in co-relation 16618. Up to 2835 conditions per place. [2024-02-02 09:13:53,931 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 171 selfloop transitions, 43 changer transitions 0/232 dead transitions. [2024-02-02 09:13:53,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 232 transitions, 2944 flow [2024-02-02 09:13:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:13:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:13:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-02-02 09:13:53,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38529411764705884 [2024-02-02 09:13:53,933 INFO L175 Difference]: Start difference. First operand has 186 places, 181 transitions, 2244 flow. Second operand 10 states and 262 transitions. [2024-02-02 09:13:53,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 232 transitions, 2944 flow [2024-02-02 09:13:53,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 232 transitions, 2757 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-02-02 09:13:53,992 INFO L231 Difference]: Finished difference. Result has 191 places, 187 transitions, 2254 flow [2024-02-02 09:13:53,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2254, PETRI_PLACES=191, PETRI_TRANSITIONS=187} [2024-02-02 09:13:53,994 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 119 predicate places. [2024-02-02 09:13:53,994 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 187 transitions, 2254 flow [2024-02-02 09:13:53,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:53,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:53,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:53,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-02-02 09:13:53,997 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:53,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:53,997 INFO L85 PathProgramCache]: Analyzing trace with hash -407644472, now seen corresponding path program 5 times [2024-02-02 09:13:53,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:53,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637267680] [2024-02-02 09:13:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:53,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:54,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:54,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637267680] [2024-02-02 09:13:54,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637267680] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:54,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:54,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:13:54,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647341825] [2024-02-02 09:13:54,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:54,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:13:54,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:54,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:13:54,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:13:54,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:54,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 187 transitions, 2254 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:54,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:54,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:54,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:55,162 INFO L124 PetriNetUnfolderBase]: 2108/3746 cut-off events. [2024-02-02 09:13:55,163 INFO L125 PetriNetUnfolderBase]: For 24875/25108 co-relation queries the response was YES. [2024-02-02 09:13:55,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16961 conditions, 3746 events. 2108/3746 cut-off events. For 24875/25108 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23596 event pairs, 682 based on Foata normal form. 114/3693 useless extension candidates. Maximal degree in co-relation 16877. Up to 2435 conditions per place. [2024-02-02 09:13:55,195 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 152 selfloop transitions, 69 changer transitions 0/239 dead transitions. [2024-02-02 09:13:55,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 239 transitions, 2948 flow [2024-02-02 09:13:55,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:13:55,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:13:55,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-02-02 09:13:55,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3926470588235294 [2024-02-02 09:13:55,197 INFO L175 Difference]: Start difference. First operand has 191 places, 187 transitions, 2254 flow. Second operand 10 states and 267 transitions. [2024-02-02 09:13:55,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 239 transitions, 2948 flow [2024-02-02 09:13:55,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 239 transitions, 2865 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-02-02 09:13:55,260 INFO L231 Difference]: Finished difference. Result has 194 places, 189 transitions, 2330 flow [2024-02-02 09:13:55,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2330, PETRI_PLACES=194, PETRI_TRANSITIONS=189} [2024-02-02 09:13:55,261 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 122 predicate places. [2024-02-02 09:13:55,261 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 189 transitions, 2330 flow [2024-02-02 09:13:55,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:55,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:55,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:55,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-02-02 09:13:55,261 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:55,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:55,262 INFO L85 PathProgramCache]: Analyzing trace with hash -315669292, now seen corresponding path program 6 times [2024-02-02 09:13:55,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:55,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506472134] [2024-02-02 09:13:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:55,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:55,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:55,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506472134] [2024-02-02 09:13:55,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506472134] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:55,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:55,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:13:55,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461139806] [2024-02-02 09:13:55,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:55,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:13:55,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:55,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:13:55,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:13:55,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:55,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 189 transitions, 2330 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:55,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:55,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:55,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:56,337 INFO L124 PetriNetUnfolderBase]: 2100/3715 cut-off events. [2024-02-02 09:13:56,338 INFO L125 PetriNetUnfolderBase]: For 26529/26775 co-relation queries the response was YES. [2024-02-02 09:13:56,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17197 conditions, 3715 events. 2100/3715 cut-off events. For 26529/26775 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 23253 event pairs, 720 based on Foata normal form. 100/3649 useless extension candidates. Maximal degree in co-relation 17112. Up to 2957 conditions per place. [2024-02-02 09:13:56,380 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 174 selfloop transitions, 43 changer transitions 0/235 dead transitions. [2024-02-02 09:13:56,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 235 transitions, 2940 flow [2024-02-02 09:13:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:13:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:13:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-02-02 09:13:56,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37433155080213903 [2024-02-02 09:13:56,382 INFO L175 Difference]: Start difference. First operand has 194 places, 189 transitions, 2330 flow. Second operand 11 states and 280 transitions. [2024-02-02 09:13:56,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 235 transitions, 2940 flow [2024-02-02 09:13:56,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 235 transitions, 2817 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-02 09:13:56,463 INFO L231 Difference]: Finished difference. Result has 198 places, 189 transitions, 2301 flow [2024-02-02 09:13:56,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2301, PETRI_PLACES=198, PETRI_TRANSITIONS=189} [2024-02-02 09:13:56,464 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 126 predicate places. [2024-02-02 09:13:56,464 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 189 transitions, 2301 flow [2024-02-02 09:13:56,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:56,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:56,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:56,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-02-02 09:13:56,465 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:56,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:56,465 INFO L85 PathProgramCache]: Analyzing trace with hash 483052673, now seen corresponding path program 1 times [2024-02-02 09:13:56,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:56,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957615807] [2024-02-02 09:13:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:56,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:56,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:56,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957615807] [2024-02-02 09:13:56,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957615807] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:56,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:56,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:13:56,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298952450] [2024-02-02 09:13:56,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:56,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:13:56,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:56,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:13:56,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:13:56,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:56,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 189 transitions, 2301 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:56,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:56,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:56,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:57,385 INFO L124 PetriNetUnfolderBase]: 2075/3711 cut-off events. [2024-02-02 09:13:57,385 INFO L125 PetriNetUnfolderBase]: For 26685/26904 co-relation queries the response was YES. [2024-02-02 09:13:57,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16999 conditions, 3711 events. 2075/3711 cut-off events. For 26685/26904 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23585 event pairs, 846 based on Foata normal form. 87/3626 useless extension candidates. Maximal degree in co-relation 16913. Up to 3112 conditions per place. [2024-02-02 09:13:57,412 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 169 selfloop transitions, 38 changer transitions 0/225 dead transitions. [2024-02-02 09:13:57,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 225 transitions, 2912 flow [2024-02-02 09:13:57,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:13:57,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:13:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-02-02 09:13:57,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38786764705882354 [2024-02-02 09:13:57,414 INFO L175 Difference]: Start difference. First operand has 198 places, 189 transitions, 2301 flow. Second operand 8 states and 211 transitions. [2024-02-02 09:13:57,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 225 transitions, 2912 flow [2024-02-02 09:13:57,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 225 transitions, 2813 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-02 09:13:57,480 INFO L231 Difference]: Finished difference. Result has 197 places, 202 transitions, 2415 flow [2024-02-02 09:13:57,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2204, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2415, PETRI_PLACES=197, PETRI_TRANSITIONS=202} [2024-02-02 09:13:57,481 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 125 predicate places. [2024-02-02 09:13:57,481 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 202 transitions, 2415 flow [2024-02-02 09:13:57,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:57,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:57,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:57,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-02-02 09:13:57,481 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:57,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:57,482 INFO L85 PathProgramCache]: Analyzing trace with hash 456180262, now seen corresponding path program 4 times [2024-02-02 09:13:57,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:57,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107202681] [2024-02-02 09:13:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:57,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:57,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:57,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107202681] [2024-02-02 09:13:57,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107202681] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:57,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:57,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:13:57,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585998889] [2024-02-02 09:13:57,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:57,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:13:57,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:57,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:13:57,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:13:57,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:57,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 202 transitions, 2415 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:57,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:57,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:57,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:58,506 INFO L124 PetriNetUnfolderBase]: 1797/3294 cut-off events. [2024-02-02 09:13:58,507 INFO L125 PetriNetUnfolderBase]: For 24311/24362 co-relation queries the response was YES. [2024-02-02 09:13:58,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14975 conditions, 3294 events. 1797/3294 cut-off events. For 24311/24362 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 20985 event pairs, 582 based on Foata normal form. 66/3257 useless extension candidates. Maximal degree in co-relation 14887. Up to 1651 conditions per place. [2024-02-02 09:13:58,540 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 130 selfloop transitions, 93 changer transitions 0/239 dead transitions. [2024-02-02 09:13:58,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 239 transitions, 3060 flow [2024-02-02 09:13:58,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:13:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:13:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-02-02 09:13:58,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-02-02 09:13:58,542 INFO L175 Difference]: Start difference. First operand has 197 places, 202 transitions, 2415 flow. Second operand 10 states and 260 transitions. [2024-02-02 09:13:58,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 239 transitions, 3060 flow [2024-02-02 09:13:58,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 239 transitions, 3019 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-02 09:13:58,617 INFO L231 Difference]: Finished difference. Result has 205 places, 202 transitions, 2571 flow [2024-02-02 09:13:58,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2571, PETRI_PLACES=205, PETRI_TRANSITIONS=202} [2024-02-02 09:13:58,618 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 133 predicate places. [2024-02-02 09:13:58,618 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 202 transitions, 2571 flow [2024-02-02 09:13:58,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:58,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:58,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:58,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-02-02 09:13:58,619 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:58,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:58,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1922842246, now seen corresponding path program 7 times [2024-02-02 09:13:58,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:58,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117040280] [2024-02-02 09:13:58,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:58,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:58,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:58,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117040280] [2024-02-02 09:13:58,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117040280] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:58,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:58,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:13:58,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649434587] [2024-02-02 09:13:58,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:58,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:13:58,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:58,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:13:58,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:13:58,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:13:58,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 202 transitions, 2571 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:58,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:13:58,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:13:58,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:13:59,572 INFO L124 PetriNetUnfolderBase]: 2015/3600 cut-off events. [2024-02-02 09:13:59,573 INFO L125 PetriNetUnfolderBase]: For 27610/27846 co-relation queries the response was YES. [2024-02-02 09:13:59,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16902 conditions, 3600 events. 2015/3600 cut-off events. For 27610/27846 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 22581 event pairs, 515 based on Foata normal form. 97/3545 useless extension candidates. Maximal degree in co-relation 16812. Up to 1859 conditions per place. [2024-02-02 09:13:59,614 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 132 selfloop transitions, 97 changer transitions 0/247 dead transitions. [2024-02-02 09:13:59,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 247 transitions, 3261 flow [2024-02-02 09:13:59,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:13:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:13:59,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-02-02 09:13:59,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084967320261438 [2024-02-02 09:13:59,616 INFO L175 Difference]: Start difference. First operand has 205 places, 202 transitions, 2571 flow. Second operand 9 states and 250 transitions. [2024-02-02 09:13:59,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 247 transitions, 3261 flow [2024-02-02 09:13:59,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 247 transitions, 3071 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-02 09:13:59,686 INFO L231 Difference]: Finished difference. Result has 205 places, 204 transitions, 2605 flow [2024-02-02 09:13:59,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2385, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2605, PETRI_PLACES=205, PETRI_TRANSITIONS=204} [2024-02-02 09:13:59,687 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 133 predicate places. [2024-02-02 09:13:59,687 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 204 transitions, 2605 flow [2024-02-02 09:13:59,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:13:59,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:13:59,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:13:59,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-02-02 09:13:59,688 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:13:59,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:13:59,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1877443852, now seen corresponding path program 8 times [2024-02-02 09:13:59,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:13:59,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485636636] [2024-02-02 09:13:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:13:59,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:13:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:13:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:13:59,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:13:59,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485636636] [2024-02-02 09:13:59,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485636636] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:13:59,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:13:59,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:13:59,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843705213] [2024-02-02 09:13:59,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:13:59,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:13:59,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:13:59,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:13:59,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:00,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:00,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 204 transitions, 2605 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:00,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:00,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:00,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:00,709 INFO L124 PetriNetUnfolderBase]: 1995/3575 cut-off events. [2024-02-02 09:14:00,709 INFO L125 PetriNetUnfolderBase]: For 28330/28570 co-relation queries the response was YES. [2024-02-02 09:14:00,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16812 conditions, 3575 events. 1995/3575 cut-off events. For 28330/28570 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22336 event pairs, 562 based on Foata normal form. 84/3516 useless extension candidates. Maximal degree in co-relation 16721. Up to 2172 conditions per place. [2024-02-02 09:14:00,745 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 141 selfloop transitions, 81 changer transitions 0/240 dead transitions. [2024-02-02 09:14:00,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 240 transitions, 3198 flow [2024-02-02 09:14:00,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:14:00,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:14:00,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-02-02 09:14:00,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3937908496732026 [2024-02-02 09:14:00,749 INFO L175 Difference]: Start difference. First operand has 205 places, 204 transitions, 2605 flow. Second operand 9 states and 241 transitions. [2024-02-02 09:14:00,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 240 transitions, 3198 flow [2024-02-02 09:14:00,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 240 transitions, 3038 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-02 09:14:00,824 INFO L231 Difference]: Finished difference. Result has 208 places, 204 transitions, 2623 flow [2024-02-02 09:14:00,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2623, PETRI_PLACES=208, PETRI_TRANSITIONS=204} [2024-02-02 09:14:00,824 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 136 predicate places. [2024-02-02 09:14:00,824 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 204 transitions, 2623 flow [2024-02-02 09:14:00,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:00,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:00,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:00,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-02-02 09:14:00,826 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:00,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:00,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1121501294, now seen corresponding path program 9 times [2024-02-02 09:14:00,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:00,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393681222] [2024-02-02 09:14:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:00,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:01,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:01,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393681222] [2024-02-02 09:14:01,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393681222] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:01,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:01,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:01,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035102569] [2024-02-02 09:14:01,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:01,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:01,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:01,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:01,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:01,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:01,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 204 transitions, 2623 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:01,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:01,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:01,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:01,842 INFO L124 PetriNetUnfolderBase]: 1951/3501 cut-off events. [2024-02-02 09:14:01,842 INFO L125 PetriNetUnfolderBase]: For 29779/30015 co-relation queries the response was YES. [2024-02-02 09:14:01,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16270 conditions, 3501 events. 1951/3501 cut-off events. For 29779/30015 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 21776 event pairs, 556 based on Foata normal form. 96/3454 useless extension candidates. Maximal degree in co-relation 16178. Up to 2160 conditions per place. [2024-02-02 09:14:01,880 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 136 selfloop transitions, 81 changer transitions 0/235 dead transitions. [2024-02-02 09:14:01,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 235 transitions, 3150 flow [2024-02-02 09:14:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:14:01,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:14:01,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-02-02 09:14:01,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025735294117647 [2024-02-02 09:14:01,882 INFO L175 Difference]: Start difference. First operand has 208 places, 204 transitions, 2623 flow. Second operand 8 states and 219 transitions. [2024-02-02 09:14:01,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 235 transitions, 3150 flow [2024-02-02 09:14:01,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 235 transitions, 2972 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-02-02 09:14:01,961 INFO L231 Difference]: Finished difference. Result has 207 places, 204 transitions, 2629 flow [2024-02-02 09:14:01,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2629, PETRI_PLACES=207, PETRI_TRANSITIONS=204} [2024-02-02 09:14:01,962 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 135 predicate places. [2024-02-02 09:14:01,962 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 204 transitions, 2629 flow [2024-02-02 09:14:01,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:01,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:01,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:01,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-02-02 09:14:01,962 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:01,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:01,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1057722639, now seen corresponding path program 2 times [2024-02-02 09:14:01,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:01,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507741780] [2024-02-02 09:14:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:01,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:02,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:02,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507741780] [2024-02-02 09:14:02,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507741780] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:02,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:02,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:14:02,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410991405] [2024-02-02 09:14:02,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:02,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:14:02,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:02,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:14:02,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:14:02,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:02,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 204 transitions, 2629 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:02,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:02,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:02,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:02,741 INFO L124 PetriNetUnfolderBase]: 1957/3507 cut-off events. [2024-02-02 09:14:02,741 INFO L125 PetriNetUnfolderBase]: For 27940/28173 co-relation queries the response was YES. [2024-02-02 09:14:02,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16328 conditions, 3507 events. 1957/3507 cut-off events. For 27940/28173 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 21983 event pairs, 790 based on Foata normal form. 83/3422 useless extension candidates. Maximal degree in co-relation 16236. Up to 2914 conditions per place. [2024-02-02 09:14:02,773 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 169 selfloop transitions, 42 changer transitions 0/229 dead transitions. [2024-02-02 09:14:02,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 229 transitions, 3154 flow [2024-02-02 09:14:02,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:14:02,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:14:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-02-02 09:14:02,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012605042016807 [2024-02-02 09:14:02,775 INFO L175 Difference]: Start difference. First operand has 207 places, 204 transitions, 2629 flow. Second operand 7 states and 191 transitions. [2024-02-02 09:14:02,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 229 transitions, 3154 flow [2024-02-02 09:14:02,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 229 transitions, 2978 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-02-02 09:14:02,840 INFO L231 Difference]: Finished difference. Result has 206 places, 207 transitions, 2565 flow [2024-02-02 09:14:02,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2453, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2565, PETRI_PLACES=206, PETRI_TRANSITIONS=207} [2024-02-02 09:14:02,841 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 134 predicate places. [2024-02-02 09:14:02,841 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 207 transitions, 2565 flow [2024-02-02 09:14:02,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:02,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:02,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:02,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-02-02 09:14:02,841 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:02,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:02,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1650043200, now seen corresponding path program 10 times [2024-02-02 09:14:02,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:02,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415920611] [2024-02-02 09:14:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:02,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:03,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:03,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415920611] [2024-02-02 09:14:03,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415920611] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:03,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:03,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:03,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987613827] [2024-02-02 09:14:03,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:03,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:03,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:03,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:03,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:03,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:03,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 207 transitions, 2565 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:03,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:03,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:03,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:03,767 INFO L124 PetriNetUnfolderBase]: 2067/3654 cut-off events. [2024-02-02 09:14:03,767 INFO L125 PetriNetUnfolderBase]: For 25056/25294 co-relation queries the response was YES. [2024-02-02 09:14:03,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16600 conditions, 3654 events. 2067/3654 cut-off events. For 25056/25294 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 22625 event pairs, 501 based on Foata normal form. 115/3618 useless extension candidates. Maximal degree in co-relation 16508. Up to 1926 conditions per place. [2024-02-02 09:14:03,810 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 130 selfloop transitions, 107 changer transitions 0/255 dead transitions. [2024-02-02 09:14:03,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 255 transitions, 3247 flow [2024-02-02 09:14:03,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:14:03,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:14:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2024-02-02 09:14:03,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911764705882353 [2024-02-02 09:14:03,817 INFO L175 Difference]: Start difference. First operand has 206 places, 207 transitions, 2565 flow. Second operand 10 states and 266 transitions. [2024-02-02 09:14:03,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 255 transitions, 3247 flow [2024-02-02 09:14:03,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 255 transitions, 3184 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:03,882 INFO L231 Difference]: Finished difference. Result has 213 places, 216 transitions, 2826 flow [2024-02-02 09:14:03,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2502, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2826, PETRI_PLACES=213, PETRI_TRANSITIONS=216} [2024-02-02 09:14:03,884 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 141 predicate places. [2024-02-02 09:14:03,884 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 216 transitions, 2826 flow [2024-02-02 09:14:03,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:03,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:03,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:03,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-02-02 09:14:03,885 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:03,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:03,885 INFO L85 PathProgramCache]: Analyzing trace with hash -705402375, now seen corresponding path program 3 times [2024-02-02 09:14:03,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:03,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473630204] [2024-02-02 09:14:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:03,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:04,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:04,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:04,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473630204] [2024-02-02 09:14:04,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473630204] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:04,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:04,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:14:04,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164511700] [2024-02-02 09:14:04,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:04,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:14:04,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:04,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:14:04,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:14:04,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:04,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 216 transitions, 2826 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:04,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:04,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:04,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:04,713 INFO L124 PetriNetUnfolderBase]: 2033/3622 cut-off events. [2024-02-02 09:14:04,713 INFO L125 PetriNetUnfolderBase]: For 28154/28385 co-relation queries the response was YES. [2024-02-02 09:14:04,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17487 conditions, 3622 events. 2033/3622 cut-off events. For 28154/28385 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 22813 event pairs, 760 based on Foata normal form. 80/3541 useless extension candidates. Maximal degree in co-relation 17394. Up to 3030 conditions per place. [2024-02-02 09:14:04,745 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 178 selfloop transitions, 42 changer transitions 0/238 dead transitions. [2024-02-02 09:14:04,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 238 transitions, 3357 flow [2024-02-02 09:14:04,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:14:04,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:14:04,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-02-02 09:14:04,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949579831932773 [2024-02-02 09:14:04,747 INFO L175 Difference]: Start difference. First operand has 213 places, 216 transitions, 2826 flow. Second operand 7 states and 188 transitions. [2024-02-02 09:14:04,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 238 transitions, 3357 flow [2024-02-02 09:14:04,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 238 transitions, 3171 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-02-02 09:14:04,812 INFO L231 Difference]: Finished difference. Result has 212 places, 218 transitions, 2744 flow [2024-02-02 09:14:04,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2640, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2744, PETRI_PLACES=212, PETRI_TRANSITIONS=218} [2024-02-02 09:14:04,812 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 140 predicate places. [2024-02-02 09:14:04,812 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 218 transitions, 2744 flow [2024-02-02 09:14:04,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:04,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:04,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:04,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-02-02 09:14:04,813 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:04,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:04,814 INFO L85 PathProgramCache]: Analyzing trace with hash -704328225, now seen corresponding path program 4 times [2024-02-02 09:14:04,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:04,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634259276] [2024-02-02 09:14:04,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:04,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:05,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:05,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634259276] [2024-02-02 09:14:05,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634259276] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:05,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:05,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:14:05,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915382317] [2024-02-02 09:14:05,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:05,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:14:05,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:05,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:14:05,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:14:05,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:05,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 218 transitions, 2744 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:05,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:05,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:05,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:05,583 INFO L124 PetriNetUnfolderBase]: 2027/3612 cut-off events. [2024-02-02 09:14:05,583 INFO L125 PetriNetUnfolderBase]: For 25283/25514 co-relation queries the response was YES. [2024-02-02 09:14:05,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16930 conditions, 3612 events. 2027/3612 cut-off events. For 25283/25514 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 22738 event pairs, 762 based on Foata normal form. 76/3527 useless extension candidates. Maximal degree in co-relation 16837. Up to 3030 conditions per place. [2024-02-02 09:14:05,629 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 174 selfloop transitions, 44 changer transitions 0/236 dead transitions. [2024-02-02 09:14:05,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 236 transitions, 3243 flow [2024-02-02 09:14:05,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:14:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:14:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-02-02 09:14:05,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3907563025210084 [2024-02-02 09:14:05,631 INFO L175 Difference]: Start difference. First operand has 212 places, 218 transitions, 2744 flow. Second operand 7 states and 186 transitions. [2024-02-02 09:14:05,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 236 transitions, 3243 flow [2024-02-02 09:14:05,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 236 transitions, 3199 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:14:05,712 INFO L231 Difference]: Finished difference. Result has 217 places, 218 transitions, 2793 flow [2024-02-02 09:14:05,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2700, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2793, PETRI_PLACES=217, PETRI_TRANSITIONS=218} [2024-02-02 09:14:05,713 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 145 predicate places. [2024-02-02 09:14:05,713 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 218 transitions, 2793 flow [2024-02-02 09:14:05,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:05,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:05,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:05,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-02-02 09:14:05,714 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:05,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:05,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2027190944, now seen corresponding path program 1 times [2024-02-02 09:14:05,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:05,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321833095] [2024-02-02 09:14:05,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:05,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:06,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:06,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321833095] [2024-02-02 09:14:06,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321833095] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:06,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:06,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:06,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521590087] [2024-02-02 09:14:06,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:06,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:06,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:06,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:06,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:06,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:06,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 218 transitions, 2793 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:06,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:06,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:06,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:06,584 INFO L124 PetriNetUnfolderBase]: 1569/3004 cut-off events. [2024-02-02 09:14:06,584 INFO L125 PetriNetUnfolderBase]: For 26498/26705 co-relation queries the response was YES. [2024-02-02 09:14:06,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14599 conditions, 3004 events. 1569/3004 cut-off events. For 26498/26705 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 19888 event pairs, 429 based on Foata normal form. 88/2968 useless extension candidates. Maximal degree in co-relation 14504. Up to 2310 conditions per place. [2024-02-02 09:14:06,722 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 173 selfloop transitions, 27 changer transitions 0/233 dead transitions. [2024-02-02 09:14:06,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 233 transitions, 3263 flow [2024-02-02 09:14:06,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:06,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:06,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 214 transitions. [2024-02-02 09:14:06,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245098039215687 [2024-02-02 09:14:06,723 INFO L175 Difference]: Start difference. First operand has 217 places, 218 transitions, 2793 flow. Second operand 6 states and 214 transitions. [2024-02-02 09:14:06,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 233 transitions, 3263 flow [2024-02-02 09:14:06,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 233 transitions, 3160 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-02 09:14:06,788 INFO L231 Difference]: Finished difference. Result has 218 places, 220 transitions, 2789 flow [2024-02-02 09:14:06,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2789, PETRI_PLACES=218, PETRI_TRANSITIONS=220} [2024-02-02 09:14:06,789 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 146 predicate places. [2024-02-02 09:14:06,789 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 220 transitions, 2789 flow [2024-02-02 09:14:06,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:06,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:06,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:06,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-02-02 09:14:06,790 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:06,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:06,791 INFO L85 PathProgramCache]: Analyzing trace with hash 273696748, now seen corresponding path program 1 times [2024-02-02 09:14:06,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:06,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987176199] [2024-02-02 09:14:06,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:06,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:07,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:07,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987176199] [2024-02-02 09:14:07,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987176199] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:07,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:07,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:07,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611485794] [2024-02-02 09:14:07,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:07,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:07,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:07,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:07,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:07,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:07,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 220 transitions, 2789 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:07,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:07,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:07,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:07,876 INFO L124 PetriNetUnfolderBase]: 1971/3566 cut-off events. [2024-02-02 09:14:07,876 INFO L125 PetriNetUnfolderBase]: For 27287/27458 co-relation queries the response was YES. [2024-02-02 09:14:07,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17021 conditions, 3566 events. 1971/3566 cut-off events. For 27287/27458 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 22704 event pairs, 653 based on Foata normal form. 63/3534 useless extension candidates. Maximal degree in co-relation 16925. Up to 2993 conditions per place. [2024-02-02 09:14:07,918 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 186 selfloop transitions, 53 changer transitions 0/257 dead transitions. [2024-02-02 09:14:07,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 257 transitions, 3667 flow [2024-02-02 09:14:07,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:14:07,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:14:07,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-02-02 09:14:07,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37683823529411764 [2024-02-02 09:14:07,920 INFO L175 Difference]: Start difference. First operand has 218 places, 220 transitions, 2789 flow. Second operand 8 states and 205 transitions. [2024-02-02 09:14:07,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 257 transitions, 3667 flow [2024-02-02 09:14:07,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 257 transitions, 3587 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:07,993 INFO L231 Difference]: Finished difference. Result has 223 places, 242 transitions, 3226 flow [2024-02-02 09:14:07,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3226, PETRI_PLACES=223, PETRI_TRANSITIONS=242} [2024-02-02 09:14:07,994 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 151 predicate places. [2024-02-02 09:14:07,994 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 242 transitions, 3226 flow [2024-02-02 09:14:07,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:07,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:07,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:07,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-02-02 09:14:07,995 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:07,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:07,995 INFO L85 PathProgramCache]: Analyzing trace with hash -899361068, now seen corresponding path program 1 times [2024-02-02 09:14:07,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:07,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148483135] [2024-02-02 09:14:07,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:07,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:08,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:08,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:08,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148483135] [2024-02-02 09:14:08,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148483135] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:08,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:08,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:08,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243767550] [2024-02-02 09:14:08,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:08,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:08,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:08,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:08,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:08,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:08,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 242 transitions, 3226 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:08,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:08,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:08,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:08,742 INFO L124 PetriNetUnfolderBase]: 1555/2967 cut-off events. [2024-02-02 09:14:08,743 INFO L125 PetriNetUnfolderBase]: For 28011/28225 co-relation queries the response was YES. [2024-02-02 09:14:08,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14937 conditions, 2967 events. 1555/2967 cut-off events. For 28011/28225 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 19644 event pairs, 441 based on Foata normal form. 108/2990 useless extension candidates. Maximal degree in co-relation 14840. Up to 2291 conditions per place. [2024-02-02 09:14:08,773 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 186 selfloop transitions, 36 changer transitions 0/255 dead transitions. [2024-02-02 09:14:08,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 255 transitions, 3737 flow [2024-02-02 09:14:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-02-02 09:14:08,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171568627450981 [2024-02-02 09:14:08,775 INFO L175 Difference]: Start difference. First operand has 223 places, 242 transitions, 3226 flow. Second operand 6 states and 211 transitions. [2024-02-02 09:14:08,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 255 transitions, 3737 flow [2024-02-02 09:14:08,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 255 transitions, 3668 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-02-02 09:14:08,846 INFO L231 Difference]: Finished difference. Result has 227 places, 244 transitions, 3278 flow [2024-02-02 09:14:08,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3157, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3278, PETRI_PLACES=227, PETRI_TRANSITIONS=244} [2024-02-02 09:14:08,847 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 155 predicate places. [2024-02-02 09:14:08,847 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 244 transitions, 3278 flow [2024-02-02 09:14:08,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:08,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:08,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:08,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-02-02 09:14:08,848 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:08,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:08,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1155484434, now seen corresponding path program 1 times [2024-02-02 09:14:08,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:08,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718335728] [2024-02-02 09:14:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:08,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:09,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:09,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718335728] [2024-02-02 09:14:09,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718335728] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:09,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:09,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:14:09,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617663196] [2024-02-02 09:14:09,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:09,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:14:09,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:09,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:14:09,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:14:09,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:09,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 244 transitions, 3278 flow. Second operand has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:09,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:09,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:09,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:09,609 INFO L124 PetriNetUnfolderBase]: 1580/3022 cut-off events. [2024-02-02 09:14:09,609 INFO L125 PetriNetUnfolderBase]: For 30168/30380 co-relation queries the response was YES. [2024-02-02 09:14:09,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15292 conditions, 3022 events. 1580/3022 cut-off events. For 30168/30380 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 20049 event pairs, 406 based on Foata normal form. 92/3028 useless extension candidates. Maximal degree in co-relation 15193. Up to 2019 conditions per place. [2024-02-02 09:14:09,636 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 177 selfloop transitions, 63 changer transitions 0/273 dead transitions. [2024-02-02 09:14:09,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 273 transitions, 3935 flow [2024-02-02 09:14:09,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:14:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:14:09,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 256 transitions. [2024-02-02 09:14:09,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378151260504201 [2024-02-02 09:14:09,637 INFO L175 Difference]: Start difference. First operand has 227 places, 244 transitions, 3278 flow. Second operand 7 states and 256 transitions. [2024-02-02 09:14:09,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 273 transitions, 3935 flow [2024-02-02 09:14:09,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 273 transitions, 3832 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:09,702 INFO L231 Difference]: Finished difference. Result has 231 places, 250 transitions, 3370 flow [2024-02-02 09:14:09,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3175, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3370, PETRI_PLACES=231, PETRI_TRANSITIONS=250} [2024-02-02 09:14:09,702 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 159 predicate places. [2024-02-02 09:14:09,702 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 250 transitions, 3370 flow [2024-02-02 09:14:09,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:09,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:09,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:09,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-02-02 09:14:09,703 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:09,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:09,703 INFO L85 PathProgramCache]: Analyzing trace with hash 566365042, now seen corresponding path program 1 times [2024-02-02 09:14:09,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:09,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632058855] [2024-02-02 09:14:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:09,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:09,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:09,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632058855] [2024-02-02 09:14:09,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632058855] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:09,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:09,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:09,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281237889] [2024-02-02 09:14:09,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:09,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:09,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:09,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:09,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:09,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:09,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 250 transitions, 3370 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:09,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:09,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:09,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:10,617 INFO L124 PetriNetUnfolderBase]: 2026/3675 cut-off events. [2024-02-02 09:14:10,617 INFO L125 PetriNetUnfolderBase]: For 32001/32165 co-relation queries the response was YES. [2024-02-02 09:14:10,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18267 conditions, 3675 events. 2026/3675 cut-off events. For 32001/32165 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 23660 event pairs, 493 based on Foata normal form. 56/3640 useless extension candidates. Maximal degree in co-relation 18167. Up to 2996 conditions per place. [2024-02-02 09:14:10,653 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 231 selfloop transitions, 40 changer transitions 0/289 dead transitions. [2024-02-02 09:14:10,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 289 transitions, 4131 flow [2024-02-02 09:14:10,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:14:10,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:14:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-02-02 09:14:10,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096638655462185 [2024-02-02 09:14:10,655 INFO L175 Difference]: Start difference. First operand has 231 places, 250 transitions, 3370 flow. Second operand 7 states and 195 transitions. [2024-02-02 09:14:10,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 289 transitions, 4131 flow [2024-02-02 09:14:10,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 289 transitions, 4008 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:10,741 INFO L231 Difference]: Finished difference. Result has 235 places, 263 transitions, 3481 flow [2024-02-02 09:14:10,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3257, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3481, PETRI_PLACES=235, PETRI_TRANSITIONS=263} [2024-02-02 09:14:10,741 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 163 predicate places. [2024-02-02 09:14:10,742 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 263 transitions, 3481 flow [2024-02-02 09:14:10,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:10,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:10,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:10,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-02-02 09:14:10,742 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:10,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1578793868, now seen corresponding path program 2 times [2024-02-02 09:14:10,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:10,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455200293] [2024-02-02 09:14:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:10,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:10,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:10,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455200293] [2024-02-02 09:14:10,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455200293] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:10,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:10,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:10,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341166028] [2024-02-02 09:14:10,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:10,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:10,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:10,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:10,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:10,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:10,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 263 transitions, 3481 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:10,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:10,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:10,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:11,621 INFO L124 PetriNetUnfolderBase]: 2006/3639 cut-off events. [2024-02-02 09:14:11,621 INFO L125 PetriNetUnfolderBase]: For 30579/30743 co-relation queries the response was YES. [2024-02-02 09:14:11,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17880 conditions, 3639 events. 2006/3639 cut-off events. For 30579/30743 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23345 event pairs, 492 based on Foata normal form. 64/3612 useless extension candidates. Maximal degree in co-relation 17779. Up to 2996 conditions per place. [2024-02-02 09:14:11,658 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 225 selfloop transitions, 38 changer transitions 0/281 dead transitions. [2024-02-02 09:14:11,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 281 transitions, 4061 flow [2024-02-02 09:14:11,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:11,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:11,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-02-02 09:14:11,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068627450980392 [2024-02-02 09:14:11,659 INFO L175 Difference]: Start difference. First operand has 235 places, 263 transitions, 3481 flow. Second operand 6 states and 166 transitions. [2024-02-02 09:14:11,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 281 transitions, 4061 flow [2024-02-02 09:14:11,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 281 transitions, 4011 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:11,737 INFO L231 Difference]: Finished difference. Result has 237 places, 263 transitions, 3516 flow [2024-02-02 09:14:11,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3431, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3516, PETRI_PLACES=237, PETRI_TRANSITIONS=263} [2024-02-02 09:14:11,738 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 165 predicate places. [2024-02-02 09:14:11,738 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 263 transitions, 3516 flow [2024-02-02 09:14:11,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:11,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:11,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:11,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-02-02 09:14:11,739 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:11,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1609270118, now seen corresponding path program 2 times [2024-02-02 09:14:11,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:11,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081870928] [2024-02-02 09:14:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:11,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:11,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:11,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081870928] [2024-02-02 09:14:11,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081870928] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:11,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:11,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:14:11,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901380251] [2024-02-02 09:14:11,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:11,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:14:11,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:11,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:14:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:14:11,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:11,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 263 transitions, 3516 flow. Second operand has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:11,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:11,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:11,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:12,462 INFO L124 PetriNetUnfolderBase]: 1601/3066 cut-off events. [2024-02-02 09:14:12,463 INFO L125 PetriNetUnfolderBase]: For 30635/30853 co-relation queries the response was YES. [2024-02-02 09:14:12,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15547 conditions, 3066 events. 1601/3066 cut-off events. For 30635/30853 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 20487 event pairs, 333 based on Foata normal form. 92/3069 useless extension candidates. Maximal degree in co-relation 15447. Up to 2003 conditions per place. [2024-02-02 09:14:12,491 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 181 selfloop transitions, 73 changer transitions 0/287 dead transitions. [2024-02-02 09:14:12,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 287 transitions, 4140 flow [2024-02-02 09:14:12,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:14:12,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:14:12,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 255 transitions. [2024-02-02 09:14:12,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-02-02 09:14:12,492 INFO L175 Difference]: Start difference. First operand has 237 places, 263 transitions, 3516 flow. Second operand 7 states and 255 transitions. [2024-02-02 09:14:12,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 287 transitions, 4140 flow [2024-02-02 09:14:12,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 287 transitions, 4066 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-02-02 09:14:12,560 INFO L231 Difference]: Finished difference. Result has 239 places, 264 transitions, 3600 flow [2024-02-02 09:14:12,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3442, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3600, PETRI_PLACES=239, PETRI_TRANSITIONS=264} [2024-02-02 09:14:12,561 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 167 predicate places. [2024-02-02 09:14:12,561 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 264 transitions, 3600 flow [2024-02-02 09:14:12,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:12,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:12,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:12,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-02-02 09:14:12,562 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:12,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:12,562 INFO L85 PathProgramCache]: Analyzing trace with hash 425536580, now seen corresponding path program 3 times [2024-02-02 09:14:12,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:12,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157427550] [2024-02-02 09:14:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:12,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:12,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:12,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:12,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157427550] [2024-02-02 09:14:12,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157427550] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:12,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:12,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:12,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615013557] [2024-02-02 09:14:12,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:12,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:12,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:12,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:12,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:12,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:12,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 264 transitions, 3600 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:12,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:12,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:12,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:13,458 INFO L124 PetriNetUnfolderBase]: 1987/3596 cut-off events. [2024-02-02 09:14:13,458 INFO L125 PetriNetUnfolderBase]: For 31517/31685 co-relation queries the response was YES. [2024-02-02 09:14:13,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17856 conditions, 3596 events. 1987/3596 cut-off events. For 31517/31685 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 23057 event pairs, 509 based on Foata normal form. 56/3559 useless extension candidates. Maximal degree in co-relation 17757. Up to 2981 conditions per place. [2024-02-02 09:14:13,494 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 227 selfloop transitions, 36 changer transitions 0/281 dead transitions. [2024-02-02 09:14:13,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 281 transitions, 4174 flow [2024-02-02 09:14:13,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-02-02 09:14:13,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068627450980392 [2024-02-02 09:14:13,496 INFO L175 Difference]: Start difference. First operand has 239 places, 264 transitions, 3600 flow. Second operand 6 states and 166 transitions. [2024-02-02 09:14:13,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 281 transitions, 4174 flow [2024-02-02 09:14:13,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 281 transitions, 4027 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-02-02 09:14:13,593 INFO L231 Difference]: Finished difference. Result has 234 places, 263 transitions, 3511 flow [2024-02-02 09:14:13,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3439, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3511, PETRI_PLACES=234, PETRI_TRANSITIONS=263} [2024-02-02 09:14:13,593 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 162 predicate places. [2024-02-02 09:14:13,594 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 263 transitions, 3511 flow [2024-02-02 09:14:13,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:13,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:13,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:13,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-02-02 09:14:13,594 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:13,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:13,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1056812224, now seen corresponding path program 1 times [2024-02-02 09:14:13,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:13,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216226906] [2024-02-02 09:14:13,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:13,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:13,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:13,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216226906] [2024-02-02 09:14:13,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216226906] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:13,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:13,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:14:13,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130734311] [2024-02-02 09:14:13,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:13,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:14:13,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:13,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:14:13,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:14:13,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:13,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 263 transitions, 3511 flow. Second operand has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:13,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:13,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:13,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:14,346 INFO L124 PetriNetUnfolderBase]: 1613/3078 cut-off events. [2024-02-02 09:14:14,346 INFO L125 PetriNetUnfolderBase]: For 31813/32031 co-relation queries the response was YES. [2024-02-02 09:14:14,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15586 conditions, 3078 events. 1613/3078 cut-off events. For 31813/32031 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 20511 event pairs, 429 based on Foata normal form. 110/3099 useless extension candidates. Maximal degree in co-relation 15492. Up to 2345 conditions per place. [2024-02-02 09:14:14,380 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 185 selfloop transitions, 68 changer transitions 0/286 dead transitions. [2024-02-02 09:14:14,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 286 transitions, 4227 flow [2024-02-02 09:14:14,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:14,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:14,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-02-02 09:14:14,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2024-02-02 09:14:14,381 INFO L175 Difference]: Start difference. First operand has 234 places, 263 transitions, 3511 flow. Second operand 6 states and 213 transitions. [2024-02-02 09:14:14,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 286 transitions, 4227 flow [2024-02-02 09:14:14,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 286 transitions, 4129 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:14:14,451 INFO L231 Difference]: Finished difference. Result has 236 places, 278 transitions, 3814 flow [2024-02-02 09:14:14,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3413, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3814, PETRI_PLACES=236, PETRI_TRANSITIONS=278} [2024-02-02 09:14:14,451 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 164 predicate places. [2024-02-02 09:14:14,451 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 278 transitions, 3814 flow [2024-02-02 09:14:14,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:14,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:14,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:14,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-02-02 09:14:14,452 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:14,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:14,452 INFO L85 PathProgramCache]: Analyzing trace with hash -721391174, now seen corresponding path program 1 times [2024-02-02 09:14:14,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:14,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499420556] [2024-02-02 09:14:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:14,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:14,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:14,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499420556] [2024-02-02 09:14:14,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499420556] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:14,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:14,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:14:14,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759236785] [2024-02-02 09:14:14,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:14,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:14:14,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:14,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:14:14,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:14:14,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:14,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 278 transitions, 3814 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) [2024-02-02 09:14:14,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:14,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:14,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:15,086 INFO L124 PetriNetUnfolderBase]: 1629/3082 cut-off events. [2024-02-02 09:14:15,086 INFO L125 PetriNetUnfolderBase]: For 36762/36985 co-relation queries the response was YES. [2024-02-02 09:14:15,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16201 conditions, 3082 events. 1629/3082 cut-off events. For 36762/36985 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 20805 event pairs, 259 based on Foata normal form. 131/3057 useless extension candidates. Maximal degree in co-relation 16105. Up to 941 conditions per place. [2024-02-02 09:14:15,117 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 178 selfloop transitions, 92 changer transitions 0/303 dead transitions. [2024-02-02 09:14:15,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 303 transitions, 4553 flow [2024-02-02 09:14:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:14:15,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:14:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-02-02 09:14:15,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6102941176470589 [2024-02-02 09:14:15,118 INFO L175 Difference]: Start difference. First operand has 236 places, 278 transitions, 3814 flow. Second operand 4 states and 166 transitions. [2024-02-02 09:14:15,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 303 transitions, 4553 flow [2024-02-02 09:14:15,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 303 transitions, 4467 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:15,205 INFO L231 Difference]: Finished difference. Result has 236 places, 279 transitions, 4019 flow [2024-02-02 09:14:15,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3728, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4019, PETRI_PLACES=236, PETRI_TRANSITIONS=279} [2024-02-02 09:14:15,206 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 164 predicate places. [2024-02-02 09:14:15,206 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 279 transitions, 4019 flow [2024-02-02 09:14:15,206 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) [2024-02-02 09:14:15,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:15,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:15,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-02-02 09:14:15,207 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:15,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:15,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1223633022, now seen corresponding path program 2 times [2024-02-02 09:14:15,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:15,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702960699] [2024-02-02 09:14:15,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:15,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:15,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:15,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702960699] [2024-02-02 09:14:15,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702960699] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:15,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:15,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:14:15,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114546806] [2024-02-02 09:14:15,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:15,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:14:15,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:15,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:14:15,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:14:15,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:15,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 279 transitions, 4019 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) [2024-02-02 09:14:15,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:15,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:15,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:15,690 INFO L124 PetriNetUnfolderBase]: 1164/2247 cut-off events. [2024-02-02 09:14:15,690 INFO L125 PetriNetUnfolderBase]: For 33643/33832 co-relation queries the response was YES. [2024-02-02 09:14:15,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13139 conditions, 2247 events. 1164/2247 cut-off events. For 33643/33832 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 14934 event pairs, 276 based on Foata normal form. 132/2258 useless extension candidates. Maximal degree in co-relation 13042. Up to 860 conditions per place. [2024-02-02 09:14:15,711 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 168 selfloop transitions, 81 changer transitions 1/283 dead transitions. [2024-02-02 09:14:15,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 283 transitions, 4536 flow [2024-02-02 09:14:15,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:14:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:14:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-02-02 09:14:15,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538235294117647 [2024-02-02 09:14:15,712 INFO L175 Difference]: Start difference. First operand has 236 places, 279 transitions, 4019 flow. Second operand 5 states and 183 transitions. [2024-02-02 09:14:15,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 283 transitions, 4536 flow [2024-02-02 09:14:15,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 283 transitions, 4393 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-02-02 09:14:15,815 INFO L231 Difference]: Finished difference. Result has 234 places, 271 transitions, 4081 flow [2024-02-02 09:14:15,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3823, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4081, PETRI_PLACES=234, PETRI_TRANSITIONS=271} [2024-02-02 09:14:15,815 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 162 predicate places. [2024-02-02 09:14:15,816 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 271 transitions, 4081 flow [2024-02-02 09:14:15,816 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) [2024-02-02 09:14:15,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:15,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:15,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-02-02 09:14:15,816 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:15,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:15,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1681561042, now seen corresponding path program 2 times [2024-02-02 09:14:15,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:15,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870941949] [2024-02-02 09:14:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:15,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:16,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:16,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870941949] [2024-02-02 09:14:16,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870941949] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:16,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:16,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:16,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303446214] [2024-02-02 09:14:16,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:16,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:16,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:16,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:16,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:16,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:16,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 271 transitions, 4081 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:16,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:16,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:16,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:16,633 INFO L124 PetriNetUnfolderBase]: 1592/2895 cut-off events. [2024-02-02 09:14:16,633 INFO L125 PetriNetUnfolderBase]: For 34723/34890 co-relation queries the response was YES. [2024-02-02 09:14:16,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16504 conditions, 2895 events. 1592/2895 cut-off events. For 34723/34890 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 18491 event pairs, 297 based on Foata normal form. 66/2885 useless extension candidates. Maximal degree in co-relation 16408. Up to 2080 conditions per place. [2024-02-02 09:14:16,667 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 208 selfloop transitions, 73 changer transitions 0/299 dead transitions. [2024-02-02 09:14:16,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 299 transitions, 4755 flow [2024-02-02 09:14:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:14:16,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:14:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-02-02 09:14:16,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38786764705882354 [2024-02-02 09:14:16,668 INFO L175 Difference]: Start difference. First operand has 234 places, 271 transitions, 4081 flow. Second operand 8 states and 211 transitions. [2024-02-02 09:14:16,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 299 transitions, 4755 flow [2024-02-02 09:14:16,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 299 transitions, 4556 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-02-02 09:14:16,872 INFO L231 Difference]: Finished difference. Result has 237 places, 276 transitions, 4085 flow [2024-02-02 09:14:16,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3882, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4085, PETRI_PLACES=237, PETRI_TRANSITIONS=276} [2024-02-02 09:14:16,873 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 165 predicate places. [2024-02-02 09:14:16,873 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 276 transitions, 4085 flow [2024-02-02 09:14:16,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:16,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:16,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:16,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-02-02 09:14:16,873 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:16,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:16,874 INFO L85 PathProgramCache]: Analyzing trace with hash -254584250, now seen corresponding path program 3 times [2024-02-02 09:14:16,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:16,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233414930] [2024-02-02 09:14:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:16,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:17,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:17,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:17,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233414930] [2024-02-02 09:14:17,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233414930] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:17,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:17,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:17,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141384182] [2024-02-02 09:14:17,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:17,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:17,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:17,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:17,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:17,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:17,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 276 transitions, 4085 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:17,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:17,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:17,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:17,681 INFO L124 PetriNetUnfolderBase]: 1610/2925 cut-off events. [2024-02-02 09:14:17,681 INFO L125 PetriNetUnfolderBase]: For 33077/33244 co-relation queries the response was YES. [2024-02-02 09:14:17,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16544 conditions, 2925 events. 1610/2925 cut-off events. For 33077/33244 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 18696 event pairs, 297 based on Foata normal form. 66/2915 useless extension candidates. Maximal degree in co-relation 16449. Up to 2088 conditions per place. [2024-02-02 09:14:17,709 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 206 selfloop transitions, 79 changer transitions 0/303 dead transitions. [2024-02-02 09:14:17,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 303 transitions, 4786 flow [2024-02-02 09:14:17,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:14:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:14:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-02-02 09:14:17,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38786764705882354 [2024-02-02 09:14:17,711 INFO L175 Difference]: Start difference. First operand has 237 places, 276 transitions, 4085 flow. Second operand 8 states and 211 transitions. [2024-02-02 09:14:17,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 303 transitions, 4786 flow [2024-02-02 09:14:17,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 303 transitions, 4673 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:14:17,860 INFO L231 Difference]: Finished difference. Result has 240 places, 280 transitions, 4173 flow [2024-02-02 09:14:17,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3978, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4173, PETRI_PLACES=240, PETRI_TRANSITIONS=280} [2024-02-02 09:14:17,863 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 168 predicate places. [2024-02-02 09:14:17,863 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 280 transitions, 4173 flow [2024-02-02 09:14:17,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:17,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:17,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:17,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-02-02 09:14:17,864 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:17,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:17,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1780451268, now seen corresponding path program 4 times [2024-02-02 09:14:17,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:17,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273717214] [2024-02-02 09:14:17,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:18,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:18,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273717214] [2024-02-02 09:14:18,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273717214] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:18,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:18,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:18,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069891520] [2024-02-02 09:14:18,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:18,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:18,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:18,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:18,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:18,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:18,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 280 transitions, 4173 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:18,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:18,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:18,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:18,656 INFO L124 PetriNetUnfolderBase]: 1610/2925 cut-off events. [2024-02-02 09:14:18,656 INFO L125 PetriNetUnfolderBase]: For 33615/33782 co-relation queries the response was YES. [2024-02-02 09:14:18,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16597 conditions, 2925 events. 1610/2925 cut-off events. For 33615/33782 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18717 event pairs, 269 based on Foata normal form. 66/2915 useless extension candidates. Maximal degree in co-relation 16501. Up to 2092 conditions per place. [2024-02-02 09:14:18,694 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 202 selfloop transitions, 85 changer transitions 0/305 dead transitions. [2024-02-02 09:14:18,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 305 transitions, 4847 flow [2024-02-02 09:14:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:14:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:14:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-02-02 09:14:18,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-02-02 09:14:18,696 INFO L175 Difference]: Start difference. First operand has 240 places, 280 transitions, 4173 flow. Second operand 8 states and 210 transitions. [2024-02-02 09:14:18,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 305 transitions, 4847 flow [2024-02-02 09:14:18,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 305 transitions, 4744 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-02 09:14:18,852 INFO L231 Difference]: Finished difference. Result has 246 places, 283 transitions, 4300 flow [2024-02-02 09:14:18,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4300, PETRI_PLACES=246, PETRI_TRANSITIONS=283} [2024-02-02 09:14:18,853 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 174 predicate places. [2024-02-02 09:14:18,853 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 283 transitions, 4300 flow [2024-02-02 09:14:18,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:18,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:18,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:18,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-02-02 09:14:18,854 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:18,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:18,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1696455036, now seen corresponding path program 1 times [2024-02-02 09:14:18,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:18,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842337611] [2024-02-02 09:14:18,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:18,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:19,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:19,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842337611] [2024-02-02 09:14:19,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842337611] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:19,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:19,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:19,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896316693] [2024-02-02 09:14:19,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:19,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:19,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:19,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:19,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:19,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:19,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 283 transitions, 4300 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:19,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:19,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:19,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:19,762 INFO L124 PetriNetUnfolderBase]: 1626/2926 cut-off events. [2024-02-02 09:14:19,762 INFO L125 PetriNetUnfolderBase]: For 36142/36399 co-relation queries the response was YES. [2024-02-02 09:14:19,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16730 conditions, 2926 events. 1626/2926 cut-off events. For 36142/36399 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 18574 event pairs, 339 based on Foata normal form. 59/2886 useless extension candidates. Maximal degree in co-relation 16632. Up to 2438 conditions per place. [2024-02-02 09:14:19,794 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 238 selfloop transitions, 55 changer transitions 0/314 dead transitions. [2024-02-02 09:14:19,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 314 transitions, 5004 flow [2024-02-02 09:14:19,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:14:19,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:14:19,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-02-02 09:14:19,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36911764705882355 [2024-02-02 09:14:19,796 INFO L175 Difference]: Start difference. First operand has 246 places, 283 transitions, 4300 flow. Second operand 10 states and 251 transitions. [2024-02-02 09:14:19,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 314 transitions, 5004 flow [2024-02-02 09:14:19,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 314 transitions, 4857 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-02-02 09:14:19,951 INFO L231 Difference]: Finished difference. Result has 250 places, 287 transitions, 4299 flow [2024-02-02 09:14:19,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4155, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4299, PETRI_PLACES=250, PETRI_TRANSITIONS=287} [2024-02-02 09:14:19,952 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 178 predicate places. [2024-02-02 09:14:19,952 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 287 transitions, 4299 flow [2024-02-02 09:14:19,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:19,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:19,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:19,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-02-02 09:14:19,953 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:19,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:19,953 INFO L85 PathProgramCache]: Analyzing trace with hash -519289046, now seen corresponding path program 1 times [2024-02-02 09:14:19,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:19,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803967798] [2024-02-02 09:14:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:19,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:20,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:20,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:20,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803967798] [2024-02-02 09:14:20,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803967798] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:20,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:20,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:20,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290422499] [2024-02-02 09:14:20,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:20,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:20,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:20,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:20,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:20,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:20,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 287 transitions, 4299 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:20,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:20,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:20,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:20,792 INFO L124 PetriNetUnfolderBase]: 1616/2912 cut-off events. [2024-02-02 09:14:20,792 INFO L125 PetriNetUnfolderBase]: For 34738/34997 co-relation queries the response was YES. [2024-02-02 09:14:20,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16519 conditions, 2912 events. 1616/2912 cut-off events. For 34738/34997 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 18531 event pairs, 330 based on Foata normal form. 71/2880 useless extension candidates. Maximal degree in co-relation 16421. Up to 2459 conditions per place. [2024-02-02 09:14:20,825 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 247 selfloop transitions, 35 changer transitions 0/303 dead transitions. [2024-02-02 09:14:20,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 303 transitions, 4908 flow [2024-02-02 09:14:20,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:14:20,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:14:20,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-02-02 09:14:20,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37815126050420167 [2024-02-02 09:14:20,826 INFO L175 Difference]: Start difference. First operand has 250 places, 287 transitions, 4299 flow. Second operand 7 states and 180 transitions. [2024-02-02 09:14:20,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 303 transitions, 4908 flow [2024-02-02 09:14:20,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 303 transitions, 4810 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:20,987 INFO L231 Difference]: Finished difference. Result has 253 places, 288 transitions, 4282 flow [2024-02-02 09:14:20,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4201, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4282, PETRI_PLACES=253, PETRI_TRANSITIONS=288} [2024-02-02 09:14:20,988 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 181 predicate places. [2024-02-02 09:14:20,988 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 288 transitions, 4282 flow [2024-02-02 09:14:20,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:20,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:20,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:20,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-02-02 09:14:20,989 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:20,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:20,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1738942264, now seen corresponding path program 2 times [2024-02-02 09:14:20,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:20,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565494723] [2024-02-02 09:14:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:20,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:21,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:21,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565494723] [2024-02-02 09:14:21,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565494723] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:21,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:21,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:14:21,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367246184] [2024-02-02 09:14:21,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:21,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:14:21,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:21,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:14:21,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:14:21,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:21,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 288 transitions, 4282 flow. Second operand has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:21,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:21,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:21,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:21,716 INFO L124 PetriNetUnfolderBase]: 1208/2380 cut-off events. [2024-02-02 09:14:21,716 INFO L125 PetriNetUnfolderBase]: For 35323/35512 co-relation queries the response was YES. [2024-02-02 09:14:21,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13966 conditions, 2380 events. 1208/2380 cut-off events. For 35323/35512 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 16135 event pairs, 181 based on Foata normal form. 102/2412 useless extension candidates. Maximal degree in co-relation 13868. Up to 1521 conditions per place. [2024-02-02 09:14:21,747 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 203 selfloop transitions, 77 changer transitions 0/316 dead transitions. [2024-02-02 09:14:21,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 316 transitions, 5069 flow [2024-02-02 09:14:21,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:14:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:14:21,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-02-02 09:14:21,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2024-02-02 09:14:21,749 INFO L175 Difference]: Start difference. First operand has 253 places, 288 transitions, 4282 flow. Second operand 7 states and 248 transitions. [2024-02-02 09:14:21,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 316 transitions, 5069 flow [2024-02-02 09:14:21,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 316 transitions, 5033 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:14:21,898 INFO L231 Difference]: Finished difference. Result has 258 places, 299 transitions, 4564 flow [2024-02-02 09:14:21,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4246, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4564, PETRI_PLACES=258, PETRI_TRANSITIONS=299} [2024-02-02 09:14:21,899 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 186 predicate places. [2024-02-02 09:14:21,899 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 299 transitions, 4564 flow [2024-02-02 09:14:21,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:21,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:21,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:21,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-02-02 09:14:21,899 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:21,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:21,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1009855116, now seen corresponding path program 3 times [2024-02-02 09:14:21,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:21,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51796870] [2024-02-02 09:14:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:21,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:22,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:22,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51796870] [2024-02-02 09:14:22,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51796870] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:22,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:22,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:14:22,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245334967] [2024-02-02 09:14:22,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:22,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:14:22,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:22,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:14:22,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:14:22,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:22,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 299 transitions, 4564 flow. Second operand has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:22,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:22,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:22,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:22,584 INFO L124 PetriNetUnfolderBase]: 1202/2370 cut-off events. [2024-02-02 09:14:22,584 INFO L125 PetriNetUnfolderBase]: For 37877/38074 co-relation queries the response was YES. [2024-02-02 09:14:22,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14239 conditions, 2370 events. 1202/2370 cut-off events. For 37877/38074 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16052 event pairs, 185 based on Foata normal form. 90/2390 useless extension candidates. Maximal degree in co-relation 14139. Up to 1519 conditions per place. [2024-02-02 09:14:22,611 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 192 selfloop transitions, 84 changer transitions 0/312 dead transitions. [2024-02-02 09:14:22,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 312 transitions, 5164 flow [2024-02-02 09:14:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:14:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:14:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2024-02-02 09:14:22,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126050420168067 [2024-02-02 09:14:22,612 INFO L175 Difference]: Start difference. First operand has 258 places, 299 transitions, 4564 flow. Second operand 7 states and 244 transitions. [2024-02-02 09:14:22,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 312 transitions, 5164 flow [2024-02-02 09:14:22,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 312 transitions, 5069 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-02-02 09:14:22,752 INFO L231 Difference]: Finished difference. Result has 263 places, 299 transitions, 4645 flow [2024-02-02 09:14:22,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4469, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4645, PETRI_PLACES=263, PETRI_TRANSITIONS=299} [2024-02-02 09:14:22,753 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 191 predicate places. [2024-02-02 09:14:22,753 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 299 transitions, 4645 flow [2024-02-02 09:14:22,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:22,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:22,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:22,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-02-02 09:14:22,754 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:22,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:22,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1202203830, now seen corresponding path program 2 times [2024-02-02 09:14:22,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:22,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324806047] [2024-02-02 09:14:22,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:22,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:22,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:22,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324806047] [2024-02-02 09:14:22,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324806047] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:22,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:22,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:22,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049079966] [2024-02-02 09:14:22,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:22,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:22,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:22,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:22,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:23,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:23,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 299 transitions, 4645 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:23,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:23,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:23,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:23,672 INFO L124 PetriNetUnfolderBase]: 1665/2984 cut-off events. [2024-02-02 09:14:23,673 INFO L125 PetriNetUnfolderBase]: For 38709/38984 co-relation queries the response was YES. [2024-02-02 09:14:23,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17457 conditions, 2984 events. 1665/2984 cut-off events. For 38709/38984 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 18872 event pairs, 343 based on Foata normal form. 71/2951 useless extension candidates. Maximal degree in co-relation 17355. Up to 2567 conditions per place. [2024-02-02 09:14:23,702 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 255 selfloop transitions, 47 changer transitions 0/323 dead transitions. [2024-02-02 09:14:23,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 323 transitions, 5349 flow [2024-02-02 09:14:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:14:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:14:23,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-02-02 09:14:23,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709150326797386 [2024-02-02 09:14:23,704 INFO L175 Difference]: Start difference. First operand has 263 places, 299 transitions, 4645 flow. Second operand 9 states and 227 transitions. [2024-02-02 09:14:23,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 323 transitions, 5349 flow [2024-02-02 09:14:23,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 323 transitions, 5211 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:23,889 INFO L231 Difference]: Finished difference. Result has 269 places, 303 transitions, 4658 flow [2024-02-02 09:14:23,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4514, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4658, PETRI_PLACES=269, PETRI_TRANSITIONS=303} [2024-02-02 09:14:23,889 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 197 predicate places. [2024-02-02 09:14:23,890 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 303 transitions, 4658 flow [2024-02-02 09:14:23,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:23,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:23,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:23,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-02-02 09:14:23,890 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:23,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:23,891 INFO L85 PathProgramCache]: Analyzing trace with hash 326600422, now seen corresponding path program 3 times [2024-02-02 09:14:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951675550] [2024-02-02 09:14:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:24,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:24,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951675550] [2024-02-02 09:14:24,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951675550] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:24,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:24,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:24,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638040282] [2024-02-02 09:14:24,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:24,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:24,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:24,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:24,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:24,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:24,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 303 transitions, 4658 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:24,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:24,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:24,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:24,769 INFO L124 PetriNetUnfolderBase]: 1679/3011 cut-off events. [2024-02-02 09:14:24,769 INFO L125 PetriNetUnfolderBase]: For 38345/38616 co-relation queries the response was YES. [2024-02-02 09:14:24,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17383 conditions, 3011 events. 1679/3011 cut-off events. For 38345/38616 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 19207 event pairs, 303 based on Foata normal form. 75/2982 useless extension candidates. Maximal degree in co-relation 17279. Up to 2087 conditions per place. [2024-02-02 09:14:24,807 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 236 selfloop transitions, 82 changer transitions 0/339 dead transitions. [2024-02-02 09:14:24,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 339 transitions, 5441 flow [2024-02-02 09:14:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:14:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:14:24,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-02-02 09:14:24,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872549019607843 [2024-02-02 09:14:24,809 INFO L175 Difference]: Start difference. First operand has 269 places, 303 transitions, 4658 flow. Second operand 9 states and 237 transitions. [2024-02-02 09:14:24,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 339 transitions, 5441 flow [2024-02-02 09:14:24,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 339 transitions, 5376 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:24,995 INFO L231 Difference]: Finished difference. Result has 274 places, 308 transitions, 4796 flow [2024-02-02 09:14:24,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4593, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4796, PETRI_PLACES=274, PETRI_TRANSITIONS=308} [2024-02-02 09:14:24,996 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 202 predicate places. [2024-02-02 09:14:24,996 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 308 transitions, 4796 flow [2024-02-02 09:14:24,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:24,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:24,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:24,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-02-02 09:14:24,997 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:24,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:24,997 INFO L85 PathProgramCache]: Analyzing trace with hash 357163012, now seen corresponding path program 4 times [2024-02-02 09:14:24,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:24,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359569173] [2024-02-02 09:14:24,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:24,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:25,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359569173] [2024-02-02 09:14:25,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359569173] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:25,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:25,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311324677] [2024-02-02 09:14:25,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:25,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:25,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:25,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:25,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:25,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:25,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 308 transitions, 4796 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:25,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:25,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:25,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:25,867 INFO L124 PetriNetUnfolderBase]: 1673/3004 cut-off events. [2024-02-02 09:14:25,867 INFO L125 PetriNetUnfolderBase]: For 39910/40184 co-relation queries the response was YES. [2024-02-02 09:14:25,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17556 conditions, 3004 events. 1673/3004 cut-off events. For 39910/40184 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 19173 event pairs, 308 based on Foata normal form. 65/2965 useless extension candidates. Maximal degree in co-relation 17451. Up to 2087 conditions per place. [2024-02-02 09:14:25,902 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 229 selfloop transitions, 86 changer transitions 0/336 dead transitions. [2024-02-02 09:14:25,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 336 transitions, 5523 flow [2024-02-02 09:14:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:14:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:14:25,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-02-02 09:14:25,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-02-02 09:14:25,904 INFO L175 Difference]: Start difference. First operand has 274 places, 308 transitions, 4796 flow. Second operand 9 states and 234 transitions. [2024-02-02 09:14:25,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 336 transitions, 5523 flow [2024-02-02 09:14:26,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 336 transitions, 5441 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-02 09:14:26,115 INFO L231 Difference]: Finished difference. Result has 278 places, 308 transitions, 4891 flow [2024-02-02 09:14:26,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4714, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4891, PETRI_PLACES=278, PETRI_TRANSITIONS=308} [2024-02-02 09:14:26,116 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 206 predicate places. [2024-02-02 09:14:26,116 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 308 transitions, 4891 flow [2024-02-02 09:14:26,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:26,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:26,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:26,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-02-02 09:14:26,117 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:26,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:26,117 INFO L85 PathProgramCache]: Analyzing trace with hash 51845546, now seen corresponding path program 2 times [2024-02-02 09:14:26,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:26,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926885532] [2024-02-02 09:14:26,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:26,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:26,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:26,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926885532] [2024-02-02 09:14:26,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926885532] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:26,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:26,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:26,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051023159] [2024-02-02 09:14:26,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:26,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:26,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:26,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:26,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:26,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:26,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 308 transitions, 4891 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:26,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:26,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:26,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:27,005 INFO L124 PetriNetUnfolderBase]: 1663/2998 cut-off events. [2024-02-02 09:14:27,006 INFO L125 PetriNetUnfolderBase]: For 41291/41568 co-relation queries the response was YES. [2024-02-02 09:14:27,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17580 conditions, 2998 events. 1663/2998 cut-off events. For 41291/41568 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 19165 event pairs, 327 based on Foata normal form. 79/2976 useless extension candidates. Maximal degree in co-relation 17475. Up to 2538 conditions per place. [2024-02-02 09:14:27,040 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 264 selfloop transitions, 38 changer transitions 0/323 dead transitions. [2024-02-02 09:14:27,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 323 transitions, 5539 flow [2024-02-02 09:14:27,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:27,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:27,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-02-02 09:14:27,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39215686274509803 [2024-02-02 09:14:27,042 INFO L175 Difference]: Start difference. First operand has 278 places, 308 transitions, 4891 flow. Second operand 6 states and 160 transitions. [2024-02-02 09:14:27,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 323 transitions, 5539 flow [2024-02-02 09:14:27,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 323 transitions, 5388 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 09:14:27,235 INFO L231 Difference]: Finished difference. Result has 278 places, 309 transitions, 4832 flow [2024-02-02 09:14:27,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4740, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4832, PETRI_PLACES=278, PETRI_TRANSITIONS=309} [2024-02-02 09:14:27,236 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 206 predicate places. [2024-02-02 09:14:27,236 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 309 transitions, 4832 flow [2024-02-02 09:14:27,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:27,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:27,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:27,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-02-02 09:14:27,237 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:27,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:27,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1710241588, now seen corresponding path program 3 times [2024-02-02 09:14:27,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:27,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892706435] [2024-02-02 09:14:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:27,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:27,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:27,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892706435] [2024-02-02 09:14:27,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892706435] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:27,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:27,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:27,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481357537] [2024-02-02 09:14:27,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:27,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:27,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:27,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:27,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:27,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:27,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 309 transitions, 4832 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:27,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:27,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:27,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:28,118 INFO L124 PetriNetUnfolderBase]: 1665/3004 cut-off events. [2024-02-02 09:14:28,119 INFO L125 PetriNetUnfolderBase]: For 40252/40474 co-relation queries the response was YES. [2024-02-02 09:14:28,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17422 conditions, 3004 events. 1665/3004 cut-off events. For 40252/40474 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 19275 event pairs, 313 based on Foata normal form. 76/2980 useless extension candidates. Maximal degree in co-relation 17316. Up to 2542 conditions per place. [2024-02-02 09:14:28,158 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 266 selfloop transitions, 35 changer transitions 0/322 dead transitions. [2024-02-02 09:14:28,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 322 transitions, 5473 flow [2024-02-02 09:14:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:28,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:28,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-02-02 09:14:28,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38480392156862747 [2024-02-02 09:14:28,159 INFO L175 Difference]: Start difference. First operand has 278 places, 309 transitions, 4832 flow. Second operand 6 states and 157 transitions. [2024-02-02 09:14:28,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 322 transitions, 5473 flow [2024-02-02 09:14:28,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 322 transitions, 5415 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-02 09:14:28,369 INFO L231 Difference]: Finished difference. Result has 279 places, 310 transitions, 4858 flow [2024-02-02 09:14:28,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4775, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4858, PETRI_PLACES=279, PETRI_TRANSITIONS=310} [2024-02-02 09:14:28,370 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 207 predicate places. [2024-02-02 09:14:28,370 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 310 transitions, 4858 flow [2024-02-02 09:14:28,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:28,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:28,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:28,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-02-02 09:14:28,371 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:28,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:28,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1710205318, now seen corresponding path program 4 times [2024-02-02 09:14:28,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:28,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359430921] [2024-02-02 09:14:28,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:28,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:28,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:28,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359430921] [2024-02-02 09:14:28,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359430921] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:28,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:28,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:28,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396005140] [2024-02-02 09:14:28,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:28,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:28,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:28,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:28,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:28,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:28,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 310 transitions, 4858 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:28,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:28,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:28,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:29,271 INFO L124 PetriNetUnfolderBase]: 1663/2998 cut-off events. [2024-02-02 09:14:29,272 INFO L125 PetriNetUnfolderBase]: For 40261/40483 co-relation queries the response was YES. [2024-02-02 09:14:29,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17388 conditions, 2998 events. 1663/2998 cut-off events. For 40261/40483 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 19165 event pairs, 316 based on Foata normal form. 72/2970 useless extension candidates. Maximal degree in co-relation 17283. Up to 2542 conditions per place. [2024-02-02 09:14:29,299 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 260 selfloop transitions, 39 changer transitions 0/320 dead transitions. [2024-02-02 09:14:29,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 320 transitions, 5468 flow [2024-02-02 09:14:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:29,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-02-02 09:14:29,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3799019607843137 [2024-02-02 09:14:29,300 INFO L175 Difference]: Start difference. First operand has 279 places, 310 transitions, 4858 flow. Second operand 6 states and 155 transitions. [2024-02-02 09:14:29,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 320 transitions, 5468 flow [2024-02-02 09:14:29,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 320 transitions, 5338 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-02 09:14:29,477 INFO L231 Difference]: Finished difference. Result has 273 places, 309 transitions, 4790 flow [2024-02-02 09:14:29,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4712, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4790, PETRI_PLACES=273, PETRI_TRANSITIONS=309} [2024-02-02 09:14:29,478 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 201 predicate places. [2024-02-02 09:14:29,478 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 309 transitions, 4790 flow [2024-02-02 09:14:29,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:29,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:29,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:29,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-02-02 09:14:29,479 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:29,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:29,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1467237166, now seen corresponding path program 5 times [2024-02-02 09:14:29,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:29,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98527987] [2024-02-02 09:14:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:29,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:29,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:29,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98527987] [2024-02-02 09:14:29,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98527987] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:29,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:29,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:29,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008391160] [2024-02-02 09:14:29,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:29,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:29,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:29,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:29,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:29,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:29,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 309 transitions, 4790 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:29,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:29,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:29,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:30,358 INFO L124 PetriNetUnfolderBase]: 1693/3041 cut-off events. [2024-02-02 09:14:30,358 INFO L125 PetriNetUnfolderBase]: For 39734/40008 co-relation queries the response was YES. [2024-02-02 09:14:30,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17497 conditions, 3041 events. 1693/3041 cut-off events. For 39734/40008 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 19483 event pairs, 298 based on Foata normal form. 79/3015 useless extension candidates. Maximal degree in co-relation 17398. Up to 2083 conditions per place. [2024-02-02 09:14:30,389 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 232 selfloop transitions, 90 changer transitions 0/343 dead transitions. [2024-02-02 09:14:30,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 343 transitions, 5602 flow [2024-02-02 09:14:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:14:30,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:14:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-02-02 09:14:30,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952205882352941 [2024-02-02 09:14:30,391 INFO L175 Difference]: Start difference. First operand has 273 places, 309 transitions, 4790 flow. Second operand 8 states and 215 transitions. [2024-02-02 09:14:30,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 343 transitions, 5602 flow [2024-02-02 09:14:30,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 343 transitions, 5507 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-02 09:14:30,610 INFO L231 Difference]: Finished difference. Result has 275 places, 314 transitions, 4925 flow [2024-02-02 09:14:30,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4695, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4925, PETRI_PLACES=275, PETRI_TRANSITIONS=314} [2024-02-02 09:14:30,611 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 203 predicate places. [2024-02-02 09:14:30,611 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 314 transitions, 4925 flow [2024-02-02 09:14:30,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:30,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:30,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:30,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-02-02 09:14:30,612 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:30,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:30,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1888010094, now seen corresponding path program 6 times [2024-02-02 09:14:30,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:30,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016019052] [2024-02-02 09:14:30,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:30,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:30,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:30,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:30,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016019052] [2024-02-02 09:14:30,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016019052] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:30,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:30,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:30,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125376453] [2024-02-02 09:14:30,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:30,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:30,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:30,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:30,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:30,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:30,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 314 transitions, 4925 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:30,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:30,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:30,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:31,457 INFO L124 PetriNetUnfolderBase]: 1699/3051 cut-off events. [2024-02-02 09:14:31,457 INFO L125 PetriNetUnfolderBase]: For 41989/42272 co-relation queries the response was YES. [2024-02-02 09:14:31,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17792 conditions, 3051 events. 1699/3051 cut-off events. For 41989/42272 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 19551 event pairs, 358 based on Foata normal form. 63/3013 useless extension candidates. Maximal degree in co-relation 17693. Up to 2561 conditions per place. [2024-02-02 09:14:31,492 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 250 selfloop transitions, 62 changer transitions 0/333 dead transitions. [2024-02-02 09:14:31,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 333 transitions, 5606 flow [2024-02-02 09:14:31,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:14:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:14:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-02-02 09:14:31,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37683823529411764 [2024-02-02 09:14:31,493 INFO L175 Difference]: Start difference. First operand has 275 places, 314 transitions, 4925 flow. Second operand 8 states and 205 transitions. [2024-02-02 09:14:31,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 333 transitions, 5606 flow [2024-02-02 09:14:31,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 333 transitions, 5422 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-02 09:14:31,682 INFO L231 Difference]: Finished difference. Result has 277 places, 314 transitions, 4879 flow [2024-02-02 09:14:31,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4741, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4879, PETRI_PLACES=277, PETRI_TRANSITIONS=314} [2024-02-02 09:14:31,682 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 205 predicate places. [2024-02-02 09:14:31,682 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 314 transitions, 4879 flow [2024-02-02 09:14:31,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:31,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:31,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:31,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-02-02 09:14:31,683 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:31,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:31,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1435780846, now seen corresponding path program 7 times [2024-02-02 09:14:31,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:31,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199447371] [2024-02-02 09:14:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:31,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:31,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:31,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:31,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199447371] [2024-02-02 09:14:31,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199447371] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:31,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:31,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:31,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884672682] [2024-02-02 09:14:31,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:31,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:31,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:31,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:31,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:31,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:31,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 314 transitions, 4879 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:31,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:31,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:31,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:32,505 INFO L124 PetriNetUnfolderBase]: 1681/3021 cut-off events. [2024-02-02 09:14:32,505 INFO L125 PetriNetUnfolderBase]: For 41515/41794 co-relation queries the response was YES. [2024-02-02 09:14:32,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17420 conditions, 3021 events. 1681/3021 cut-off events. For 41515/41794 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 19341 event pairs, 304 based on Foata normal form. 59/2975 useless extension candidates. Maximal degree in co-relation 17321. Up to 2083 conditions per place. [2024-02-02 09:14:32,536 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 222 selfloop transitions, 96 changer transitions 0/339 dead transitions. [2024-02-02 09:14:32,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 339 transitions, 5605 flow [2024-02-02 09:14:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:14:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:14:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-02-02 09:14:32,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38786764705882354 [2024-02-02 09:14:32,537 INFO L175 Difference]: Start difference. First operand has 277 places, 314 transitions, 4879 flow. Second operand 8 states and 211 transitions. [2024-02-02 09:14:32,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 339 transitions, 5605 flow [2024-02-02 09:14:32,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 339 transitions, 5442 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-02-02 09:14:32,698 INFO L231 Difference]: Finished difference. Result has 277 places, 314 transitions, 4920 flow [2024-02-02 09:14:32,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4720, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4920, PETRI_PLACES=277, PETRI_TRANSITIONS=314} [2024-02-02 09:14:32,699 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 205 predicate places. [2024-02-02 09:14:32,699 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 314 transitions, 4920 flow [2024-02-02 09:14:32,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:32,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:32,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:32,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-02-02 09:14:32,700 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:32,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:32,700 INFO L85 PathProgramCache]: Analyzing trace with hash 682600030, now seen corresponding path program 8 times [2024-02-02 09:14:32,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:32,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091619773] [2024-02-02 09:14:32,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:32,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:32,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:32,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091619773] [2024-02-02 09:14:32,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091619773] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:32,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:32,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:32,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200411958] [2024-02-02 09:14:32,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:32,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:32,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:32,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:32,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:33,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:33,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 314 transitions, 4920 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:33,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:33,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:33,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:33,565 INFO L124 PetriNetUnfolderBase]: 1729/3084 cut-off events. [2024-02-02 09:14:33,565 INFO L125 PetriNetUnfolderBase]: For 43205/43451 co-relation queries the response was YES. [2024-02-02 09:14:33,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18007 conditions, 3084 events. 1729/3084 cut-off events. For 43205/43451 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 19594 event pairs, 277 based on Foata normal form. 92/3064 useless extension candidates. Maximal degree in co-relation 17908. Up to 2128 conditions per place. [2024-02-02 09:14:33,591 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 222 selfloop transitions, 104 changer transitions 0/347 dead transitions. [2024-02-02 09:14:33,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 347 transitions, 5767 flow [2024-02-02 09:14:33,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:14:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:14:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-02-02 09:14:33,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-02-02 09:14:33,593 INFO L175 Difference]: Start difference. First operand has 277 places, 314 transitions, 4920 flow. Second operand 8 states and 210 transitions. [2024-02-02 09:14:33,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 347 transitions, 5767 flow [2024-02-02 09:14:33,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 347 transitions, 5632 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-02 09:14:33,765 INFO L231 Difference]: Finished difference. Result has 280 places, 325 transitions, 5161 flow [2024-02-02 09:14:33,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4802, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5161, PETRI_PLACES=280, PETRI_TRANSITIONS=325} [2024-02-02 09:14:33,766 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 208 predicate places. [2024-02-02 09:14:33,766 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 325 transitions, 5161 flow [2024-02-02 09:14:33,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:33,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:33,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:33,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-02-02 09:14:33,767 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:33,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:33,767 INFO L85 PathProgramCache]: Analyzing trace with hash 713162620, now seen corresponding path program 9 times [2024-02-02 09:14:33,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:33,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031444335] [2024-02-02 09:14:33,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:33,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:33,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:33,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031444335] [2024-02-02 09:14:33,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031444335] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:33,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:33,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:33,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501851284] [2024-02-02 09:14:33,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:33,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:33,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:33,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:33,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:34,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:34,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 325 transitions, 5161 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:34,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:34,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:34,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:34,610 INFO L124 PetriNetUnfolderBase]: 1759/3134 cut-off events. [2024-02-02 09:14:34,610 INFO L125 PetriNetUnfolderBase]: For 44481/44730 co-relation queries the response was YES. [2024-02-02 09:14:34,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18603 conditions, 3134 events. 1759/3134 cut-off events. For 44481/44730 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 19925 event pairs, 280 based on Foata normal form. 92/3114 useless extension candidates. Maximal degree in co-relation 18504. Up to 2144 conditions per place. [2024-02-02 09:14:34,644 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 220 selfloop transitions, 114 changer transitions 0/355 dead transitions. [2024-02-02 09:14:34,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 355 transitions, 6011 flow [2024-02-02 09:14:34,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:14:34,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:14:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-02-02 09:14:34,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-02-02 09:14:34,645 INFO L175 Difference]: Start difference. First operand has 280 places, 325 transitions, 5161 flow. Second operand 8 states and 210 transitions. [2024-02-02 09:14:34,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 355 transitions, 6011 flow [2024-02-02 09:14:34,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 355 transitions, 5837 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-02 09:14:34,848 INFO L231 Difference]: Finished difference. Result has 282 places, 333 transitions, 5320 flow [2024-02-02 09:14:34,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4999, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5320, PETRI_PLACES=282, PETRI_TRANSITIONS=333} [2024-02-02 09:14:34,849 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 210 predicate places. [2024-02-02 09:14:34,849 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 333 transitions, 5320 flow [2024-02-02 09:14:34,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:34,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:34,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:34,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-02-02 09:14:34,849 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:34,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:34,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1745420770, now seen corresponding path program 10 times [2024-02-02 09:14:34,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:34,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105093420] [2024-02-02 09:14:34,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:34,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:35,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:35,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105093420] [2024-02-02 09:14:35,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105093420] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:35,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:35,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:35,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833267971] [2024-02-02 09:14:35,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:35,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:35,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:35,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:35,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:35,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:35,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 333 transitions, 5320 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:35,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:35,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:35,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:35,694 INFO L124 PetriNetUnfolderBase]: 1771/3154 cut-off events. [2024-02-02 09:14:35,694 INFO L125 PetriNetUnfolderBase]: For 45290/45539 co-relation queries the response was YES. [2024-02-02 09:14:35,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18731 conditions, 3154 events. 1771/3154 cut-off events. For 45290/45539 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 20057 event pairs, 300 based on Foata normal form. 68/3110 useless extension candidates. Maximal degree in co-relation 18632. Up to 2156 conditions per place. [2024-02-02 09:14:35,727 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 214 selfloop transitions, 124 changer transitions 0/359 dead transitions. [2024-02-02 09:14:35,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 359 transitions, 6130 flow [2024-02-02 09:14:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:14:35,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:14:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-02-02 09:14:35,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3805147058823529 [2024-02-02 09:14:35,728 INFO L175 Difference]: Start difference. First operand has 282 places, 333 transitions, 5320 flow. Second operand 8 states and 207 transitions. [2024-02-02 09:14:35,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 359 transitions, 6130 flow [2024-02-02 09:14:35,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 359 transitions, 5961 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:35,944 INFO L231 Difference]: Finished difference. Result has 287 places, 340 transitions, 5531 flow [2024-02-02 09:14:35,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5157, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5531, PETRI_PLACES=287, PETRI_TRANSITIONS=340} [2024-02-02 09:14:35,945 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 215 predicate places. [2024-02-02 09:14:35,945 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 340 transitions, 5531 flow [2024-02-02 09:14:35,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:35,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:35,945 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] [2024-02-02 09:14:35,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-02-02 09:14:35,946 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:35,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:35,946 INFO L85 PathProgramCache]: Analyzing trace with hash -105934239, now seen corresponding path program 1 times [2024-02-02 09:14:35,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:35,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900396563] [2024-02-02 09:14:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:35,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:36,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:36,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:36,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900396563] [2024-02-02 09:14:36,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900396563] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:36,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:36,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:14:36,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902659953] [2024-02-02 09:14:36,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:36,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:14:36,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:36,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:14:36,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:14:36,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:36,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 340 transitions, 5531 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:36,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:36,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:36,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:36,926 INFO L124 PetriNetUnfolderBase]: 1720/3150 cut-off events. [2024-02-02 09:14:36,926 INFO L125 PetriNetUnfolderBase]: For 50130/50278 co-relation queries the response was YES. [2024-02-02 09:14:36,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19004 conditions, 3150 events. 1720/3150 cut-off events. For 50130/50278 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 20630 event pairs, 373 based on Foata normal form. 40/3095 useless extension candidates. Maximal degree in co-relation 18903. Up to 2546 conditions per place. [2024-02-02 09:14:36,959 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 269 selfloop transitions, 72 changer transitions 0/362 dead transitions. [2024-02-02 09:14:36,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 362 transitions, 6405 flow [2024-02-02 09:14:36,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:14:36,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:14:36,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-02-02 09:14:36,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36580882352941174 [2024-02-02 09:14:36,961 INFO L175 Difference]: Start difference. First operand has 287 places, 340 transitions, 5531 flow. Second operand 8 states and 199 transitions. [2024-02-02 09:14:36,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 362 transitions, 6405 flow [2024-02-02 09:14:37,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 362 transitions, 6192 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-02 09:14:37,164 INFO L231 Difference]: Finished difference. Result has 289 places, 349 transitions, 5650 flow [2024-02-02 09:14:37,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5324, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5650, PETRI_PLACES=289, PETRI_TRANSITIONS=349} [2024-02-02 09:14:37,165 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 217 predicate places. [2024-02-02 09:14:37,165 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 349 transitions, 5650 flow [2024-02-02 09:14:37,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:37,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:37,166 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] [2024-02-02 09:14:37,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-02-02 09:14:37,166 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:37,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:37,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1562043367, now seen corresponding path program 1 times [2024-02-02 09:14:37,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:37,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455822672] [2024-02-02 09:14:37,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:37,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:37,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:37,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455822672] [2024-02-02 09:14:37,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455822672] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:37,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:37,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:14:37,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570535700] [2024-02-02 09:14:37,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:37,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:14:37,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:14:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:14:37,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:37,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 349 transitions, 5650 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:37,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:37,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:37,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:38,341 INFO L124 PetriNetUnfolderBase]: 1982/3557 cut-off events. [2024-02-02 09:14:38,342 INFO L125 PetriNetUnfolderBase]: For 57604/57884 co-relation queries the response was YES. [2024-02-02 09:14:38,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21088 conditions, 3557 events. 1982/3557 cut-off events. For 57604/57884 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 23186 event pairs, 427 based on Foata normal form. 89/3546 useless extension candidates. Maximal degree in co-relation 20987. Up to 2448 conditions per place. [2024-02-02 09:14:38,376 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 314 selfloop transitions, 98 changer transitions 0/433 dead transitions. [2024-02-02 09:14:38,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 433 transitions, 7186 flow [2024-02-02 09:14:38,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:14:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:14:38,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 319 transitions. [2024-02-02 09:14:38,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3909313725490196 [2024-02-02 09:14:38,377 INFO L175 Difference]: Start difference. First operand has 289 places, 349 transitions, 5650 flow. Second operand 12 states and 319 transitions. [2024-02-02 09:14:38,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 433 transitions, 7186 flow [2024-02-02 09:14:38,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 433 transitions, 7091 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:38,585 INFO L231 Difference]: Finished difference. Result has 299 places, 369 transitions, 6065 flow [2024-02-02 09:14:38,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5558, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6065, PETRI_PLACES=299, PETRI_TRANSITIONS=369} [2024-02-02 09:14:38,586 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 227 predicate places. [2024-02-02 09:14:38,586 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 369 transitions, 6065 flow [2024-02-02 09:14:38,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:38,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:38,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:38,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-02-02 09:14:38,587 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:38,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:38,598 INFO L85 PathProgramCache]: Analyzing trace with hash -608335141, now seen corresponding path program 1 times [2024-02-02 09:14:38,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:38,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142087795] [2024-02-02 09:14:38,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:38,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:38,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:38,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142087795] [2024-02-02 09:14:38,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142087795] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:38,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:38,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:14:38,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225650990] [2024-02-02 09:14:38,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:38,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:14:38,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:38,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:14:38,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:14:38,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:38,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 369 transitions, 6065 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:38,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:38,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:38,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:39,982 INFO L124 PetriNetUnfolderBase]: 2146/3899 cut-off events. [2024-02-02 09:14:39,983 INFO L125 PetriNetUnfolderBase]: For 72702/72865 co-relation queries the response was YES. [2024-02-02 09:14:40,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23940 conditions, 3899 events. 2146/3899 cut-off events. For 72702/72865 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 26113 event pairs, 545 based on Foata normal form. 78/3892 useless extension candidates. Maximal degree in co-relation 23836. Up to 2514 conditions per place. [2024-02-02 09:14:40,036 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 324 selfloop transitions, 104 changer transitions 0/449 dead transitions. [2024-02-02 09:14:40,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 449 transitions, 7723 flow [2024-02-02 09:14:40,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:14:40,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:14:40,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 315 transitions. [2024-02-02 09:14:40,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-02-02 09:14:40,038 INFO L175 Difference]: Start difference. First operand has 299 places, 369 transitions, 6065 flow. Second operand 12 states and 315 transitions. [2024-02-02 09:14:40,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 449 transitions, 7723 flow [2024-02-02 09:14:40,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 449 transitions, 7592 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-02-02 09:14:40,335 INFO L231 Difference]: Finished difference. Result has 306 places, 385 transitions, 6440 flow [2024-02-02 09:14:40,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5934, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6440, PETRI_PLACES=306, PETRI_TRANSITIONS=385} [2024-02-02 09:14:40,336 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 234 predicate places. [2024-02-02 09:14:40,336 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 385 transitions, 6440 flow [2024-02-02 09:14:40,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:40,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:40,336 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] [2024-02-02 09:14:40,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-02-02 09:14:40,337 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:40,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:40,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1223476577, now seen corresponding path program 2 times [2024-02-02 09:14:40,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:40,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147746674] [2024-02-02 09:14:40,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:40,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:40,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:40,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147746674] [2024-02-02 09:14:40,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147746674] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:40,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:40,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:14:40,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884363006] [2024-02-02 09:14:40,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:40,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:14:40,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:40,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:14:40,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:14:40,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:40,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 385 transitions, 6440 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:40,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:40,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:40,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:41,604 INFO L124 PetriNetUnfolderBase]: 2180/3946 cut-off events. [2024-02-02 09:14:41,604 INFO L125 PetriNetUnfolderBase]: For 73051/73229 co-relation queries the response was YES. [2024-02-02 09:14:41,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24763 conditions, 3946 events. 2180/3946 cut-off events. For 73051/73229 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 26356 event pairs, 492 based on Foata normal form. 58/3900 useless extension candidates. Maximal degree in co-relation 24655. Up to 3009 conditions per place. [2024-02-02 09:14:41,640 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 308 selfloop transitions, 76 changer transitions 0/405 dead transitions. [2024-02-02 09:14:41,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 405 transitions, 7297 flow [2024-02-02 09:14:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:14:41,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:14:41,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-02-02 09:14:41,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38445378151260506 [2024-02-02 09:14:41,642 INFO L175 Difference]: Start difference. First operand has 306 places, 385 transitions, 6440 flow. Second operand 7 states and 183 transitions. [2024-02-02 09:14:41,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 405 transitions, 7297 flow [2024-02-02 09:14:41,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 405 transitions, 7164 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-02-02 09:14:41,924 INFO L231 Difference]: Finished difference. Result has 311 places, 388 transitions, 6529 flow [2024-02-02 09:14:41,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6307, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6529, PETRI_PLACES=311, PETRI_TRANSITIONS=388} [2024-02-02 09:14:41,924 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 239 predicate places. [2024-02-02 09:14:41,925 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 388 transitions, 6529 flow [2024-02-02 09:14:41,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:41,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:41,925 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] [2024-02-02 09:14:41,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-02-02 09:14:41,925 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:41,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1101933241, now seen corresponding path program 3 times [2024-02-02 09:14:41,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:41,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696471360] [2024-02-02 09:14:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:41,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:42,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:42,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696471360] [2024-02-02 09:14:42,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696471360] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:42,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:42,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:14:42,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779427667] [2024-02-02 09:14:42,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:42,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:14:42,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:42,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:14:42,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:14:42,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:42,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 388 transitions, 6529 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:42,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:42,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:42,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:43,078 INFO L124 PetriNetUnfolderBase]: 2186/3964 cut-off events. [2024-02-02 09:14:43,078 INFO L125 PetriNetUnfolderBase]: For 72186/72364 co-relation queries the response was YES. [2024-02-02 09:14:43,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24693 conditions, 3964 events. 2186/3964 cut-off events. For 72186/72364 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26561 event pairs, 493 based on Foata normal form. 58/3918 useless extension candidates. Maximal degree in co-relation 24582. Up to 3017 conditions per place. [2024-02-02 09:14:43,127 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 305 selfloop transitions, 81 changer transitions 0/407 dead transitions. [2024-02-02 09:14:43,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 407 transitions, 7394 flow [2024-02-02 09:14:43,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:14:43,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:14:43,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-02-02 09:14:43,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38445378151260506 [2024-02-02 09:14:43,128 INFO L175 Difference]: Start difference. First operand has 311 places, 388 transitions, 6529 flow. Second operand 7 states and 183 transitions. [2024-02-02 09:14:43,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 407 transitions, 7394 flow [2024-02-02 09:14:43,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 407 transitions, 7299 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-02-02 09:14:43,411 INFO L231 Difference]: Finished difference. Result has 315 places, 390 transitions, 6632 flow [2024-02-02 09:14:43,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6444, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6632, PETRI_PLACES=315, PETRI_TRANSITIONS=390} [2024-02-02 09:14:43,411 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 243 predicate places. [2024-02-02 09:14:43,411 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 390 transitions, 6632 flow [2024-02-02 09:14:43,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:43,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:43,412 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] [2024-02-02 09:14:43,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-02-02 09:14:43,412 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:43,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:43,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1460036027, now seen corresponding path program 4 times [2024-02-02 09:14:43,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:43,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959677530] [2024-02-02 09:14:43,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:43,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:43,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:43,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959677530] [2024-02-02 09:14:43,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959677530] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:43,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:43,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:14:43,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360788123] [2024-02-02 09:14:43,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:43,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:14:43,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:43,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:14:43,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:14:43,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:43,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 390 transitions, 6632 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:43,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:43,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:43,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:44,479 INFO L124 PetriNetUnfolderBase]: 2186/3964 cut-off events. [2024-02-02 09:14:44,480 INFO L125 PetriNetUnfolderBase]: For 73010/73188 co-relation queries the response was YES. [2024-02-02 09:14:44,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24721 conditions, 3964 events. 2186/3964 cut-off events. For 73010/73188 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26562 event pairs, 458 based on Foata normal form. 58/3918 useless extension candidates. Maximal degree in co-relation 24610. Up to 3021 conditions per place. [2024-02-02 09:14:44,523 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 296 selfloop transitions, 91 changer transitions 0/408 dead transitions. [2024-02-02 09:14:44,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 408 transitions, 7460 flow [2024-02-02 09:14:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:14:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:14:44,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-02-02 09:14:44,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-02-02 09:14:44,524 INFO L175 Difference]: Start difference. First operand has 315 places, 390 transitions, 6632 flow. Second operand 7 states and 182 transitions. [2024-02-02 09:14:44,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 408 transitions, 7460 flow [2024-02-02 09:14:44,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 408 transitions, 7238 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-02-02 09:14:44,832 INFO L231 Difference]: Finished difference. Result has 311 places, 391 transitions, 6632 flow [2024-02-02 09:14:44,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6394, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6632, PETRI_PLACES=311, PETRI_TRANSITIONS=391} [2024-02-02 09:14:44,833 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 239 predicate places. [2024-02-02 09:14:44,833 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 391 transitions, 6632 flow [2024-02-02 09:14:44,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:44,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:44,833 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] [2024-02-02 09:14:44,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-02-02 09:14:44,834 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:44,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:44,834 INFO L85 PathProgramCache]: Analyzing trace with hash 644698269, now seen corresponding path program 1 times [2024-02-02 09:14:44,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:44,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111624056] [2024-02-02 09:14:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:44,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:45,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:45,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111624056] [2024-02-02 09:14:45,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111624056] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:45,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:45,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:45,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608631186] [2024-02-02 09:14:45,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:45,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:45,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:45,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:45,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:45,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:45,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 391 transitions, 6632 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:45,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:45,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:45,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:45,771 INFO L124 PetriNetUnfolderBase]: 1719/3356 cut-off events. [2024-02-02 09:14:45,771 INFO L125 PetriNetUnfolderBase]: For 77134/77361 co-relation queries the response was YES. [2024-02-02 09:14:45,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21439 conditions, 3356 events. 1719/3356 cut-off events. For 77134/77361 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 24070 event pairs, 236 based on Foata normal form. 120/3380 useless extension candidates. Maximal degree in co-relation 21334. Up to 1119 conditions per place. [2024-02-02 09:14:45,809 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 257 selfloop transitions, 159 changer transitions 0/457 dead transitions. [2024-02-02 09:14:45,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 457 transitions, 8165 flow [2024-02-02 09:14:45,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:14:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:14:45,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 358 transitions. [2024-02-02 09:14:45,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264705882352941 [2024-02-02 09:14:45,811 INFO L175 Difference]: Start difference. First operand has 311 places, 391 transitions, 6632 flow. Second operand 10 states and 358 transitions. [2024-02-02 09:14:45,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 457 transitions, 8165 flow [2024-02-02 09:14:46,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 457 transitions, 7987 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-02-02 09:14:46,062 INFO L231 Difference]: Finished difference. Result has 317 places, 398 transitions, 6897 flow [2024-02-02 09:14:46,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6454, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6897, PETRI_PLACES=317, PETRI_TRANSITIONS=398} [2024-02-02 09:14:46,062 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 245 predicate places. [2024-02-02 09:14:46,062 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 398 transitions, 6897 flow [2024-02-02 09:14:46,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:46,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:46,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:46,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-02-02 09:14:46,063 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:46,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:46,063 INFO L85 PathProgramCache]: Analyzing trace with hash -477605211, now seen corresponding path program 2 times [2024-02-02 09:14:46,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:46,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100503842] [2024-02-02 09:14:46,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:46,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:46,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:46,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100503842] [2024-02-02 09:14:46,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100503842] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:46,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:46,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:46,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799051677] [2024-02-02 09:14:46,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:46,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:46,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:46,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:46,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:46,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:46,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 398 transitions, 6897 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:46,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:46,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:46,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:47,070 INFO L124 PetriNetUnfolderBase]: 1751/3420 cut-off events. [2024-02-02 09:14:47,071 INFO L125 PetriNetUnfolderBase]: For 80019/80246 co-relation queries the response was YES. [2024-02-02 09:14:47,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22290 conditions, 3420 events. 1751/3420 cut-off events. For 80019/80246 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 24615 event pairs, 236 based on Foata normal form. 108/3432 useless extension candidates. Maximal degree in co-relation 22184. Up to 1131 conditions per place. [2024-02-02 09:14:47,100 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 265 selfloop transitions, 162 changer transitions 0/468 dead transitions. [2024-02-02 09:14:47,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 468 transitions, 8462 flow [2024-02-02 09:14:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:14:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:14:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 422 transitions. [2024-02-02 09:14:47,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171568627450981 [2024-02-02 09:14:47,102 INFO L175 Difference]: Start difference. First operand has 317 places, 398 transitions, 6897 flow. Second operand 12 states and 422 transitions. [2024-02-02 09:14:47,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 468 transitions, 8462 flow [2024-02-02 09:14:47,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 468 transitions, 8141 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-02-02 09:14:47,354 INFO L231 Difference]: Finished difference. Result has 324 places, 401 transitions, 6972 flow [2024-02-02 09:14:47,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6600, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6972, PETRI_PLACES=324, PETRI_TRANSITIONS=401} [2024-02-02 09:14:47,356 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 252 predicate places. [2024-02-02 09:14:47,356 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 401 transitions, 6972 flow [2024-02-02 09:14:47,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:47,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:47,356 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] [2024-02-02 09:14:47,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-02-02 09:14:47,356 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:47,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:47,357 INFO L85 PathProgramCache]: Analyzing trace with hash -774915991, now seen corresponding path program 3 times [2024-02-02 09:14:47,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:47,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563839225] [2024-02-02 09:14:47,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:47,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:47,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:47,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563839225] [2024-02-02 09:14:47,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563839225] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:47,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:47,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:47,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487535916] [2024-02-02 09:14:47,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:47,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:47,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:47,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:47,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:47,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:47,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 401 transitions, 6972 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:47,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:47,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:47,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:48,320 INFO L124 PetriNetUnfolderBase]: 1783/3480 cut-off events. [2024-02-02 09:14:48,321 INFO L125 PetriNetUnfolderBase]: For 81289/81513 co-relation queries the response was YES. [2024-02-02 09:14:48,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22704 conditions, 3480 events. 1783/3480 cut-off events. For 81289/81513 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 25059 event pairs, 221 based on Foata normal form. 106/3487 useless extension candidates. Maximal degree in co-relation 22596. Up to 1141 conditions per place. [2024-02-02 09:14:48,359 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 223 selfloop transitions, 196 changer transitions 0/460 dead transitions. [2024-02-02 09:14:48,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 460 transitions, 8394 flow [2024-02-02 09:14:48,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:14:48,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:14:48,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 384 transitions. [2024-02-02 09:14:48,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133689839572193 [2024-02-02 09:14:48,360 INFO L175 Difference]: Start difference. First operand has 324 places, 401 transitions, 6972 flow. Second operand 11 states and 384 transitions. [2024-02-02 09:14:48,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 460 transitions, 8394 flow [2024-02-02 09:14:48,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 460 transitions, 8072 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-02-02 09:14:48,638 INFO L231 Difference]: Finished difference. Result has 328 places, 416 transitions, 7360 flow [2024-02-02 09:14:48,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6653, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7360, PETRI_PLACES=328, PETRI_TRANSITIONS=416} [2024-02-02 09:14:48,639 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 256 predicate places. [2024-02-02 09:14:48,639 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 416 transitions, 7360 flow [2024-02-02 09:14:48,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:48,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:48,639 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] [2024-02-02 09:14:48,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-02-02 09:14:48,640 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:48,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:48,640 INFO L85 PathProgramCache]: Analyzing trace with hash -993777061, now seen corresponding path program 4 times [2024-02-02 09:14:48,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:48,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138965147] [2024-02-02 09:14:48,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:48,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:48,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:48,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138965147] [2024-02-02 09:14:48,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138965147] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:48,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:48,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:48,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394989475] [2024-02-02 09:14:48,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:48,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:48,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:48,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:48,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:48,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:48,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 416 transitions, 7360 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:48,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:48,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:48,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:49,655 INFO L124 PetriNetUnfolderBase]: 1815/3536 cut-off events. [2024-02-02 09:14:49,655 INFO L125 PetriNetUnfolderBase]: For 88670/88895 co-relation queries the response was YES. [2024-02-02 09:14:49,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23412 conditions, 3536 events. 1815/3536 cut-off events. For 88670/88895 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 25422 event pairs, 285 based on Foata normal form. 118/3555 useless extension candidates. Maximal degree in co-relation 23302. Up to 1556 conditions per place. [2024-02-02 09:14:49,693 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 247 selfloop transitions, 168 changer transitions 0/456 dead transitions. [2024-02-02 09:14:49,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 456 transitions, 8584 flow [2024-02-02 09:14:49,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:14:49,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:14:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 294 transitions. [2024-02-02 09:14:49,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404411764705882 [2024-02-02 09:14:49,695 INFO L175 Difference]: Start difference. First operand has 328 places, 416 transitions, 7360 flow. Second operand 8 states and 294 transitions. [2024-02-02 09:14:49,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 456 transitions, 8584 flow [2024-02-02 09:14:50,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 456 transitions, 8324 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-02 09:14:50,068 INFO L231 Difference]: Finished difference. Result has 330 places, 419 transitions, 7489 flow [2024-02-02 09:14:50,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7103, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7489, PETRI_PLACES=330, PETRI_TRANSITIONS=419} [2024-02-02 09:14:50,069 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 258 predicate places. [2024-02-02 09:14:50,069 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 419 transitions, 7489 flow [2024-02-02 09:14:50,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:50,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:50,071 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] [2024-02-02 09:14:50,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-02-02 09:14:50,072 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:50,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1853754087, now seen corresponding path program 5 times [2024-02-02 09:14:50,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:50,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956865848] [2024-02-02 09:14:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:50,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:50,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:50,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956865848] [2024-02-02 09:14:50,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956865848] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:50,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:50,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:50,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490867129] [2024-02-02 09:14:50,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:50,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:50,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:50,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:50,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:50,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:50,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 419 transitions, 7489 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:50,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:50,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:50,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:51,118 INFO L124 PetriNetUnfolderBase]: 1785/3486 cut-off events. [2024-02-02 09:14:51,119 INFO L125 PetriNetUnfolderBase]: For 87949/88172 co-relation queries the response was YES. [2024-02-02 09:14:51,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22936 conditions, 3486 events. 1785/3486 cut-off events. For 87949/88172 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 25141 event pairs, 271 based on Foata normal form. 122/3509 useless extension candidates. Maximal degree in co-relation 22825. Up to 1556 conditions per place. [2024-02-02 09:14:51,163 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 268 selfloop transitions, 152 changer transitions 0/461 dead transitions. [2024-02-02 09:14:51,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 461 transitions, 8746 flow [2024-02-02 09:14:51,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:14:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:14:51,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 325 transitions. [2024-02-02 09:14:51,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310457516339869 [2024-02-02 09:14:51,165 INFO L175 Difference]: Start difference. First operand has 330 places, 419 transitions, 7489 flow. Second operand 9 states and 325 transitions. [2024-02-02 09:14:51,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 461 transitions, 8746 flow [2024-02-02 09:14:51,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 461 transitions, 8557 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:51,511 INFO L231 Difference]: Finished difference. Result has 335 places, 419 transitions, 7624 flow [2024-02-02 09:14:51,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7300, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7624, PETRI_PLACES=335, PETRI_TRANSITIONS=419} [2024-02-02 09:14:51,511 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 263 predicate places. [2024-02-02 09:14:51,511 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 419 transitions, 7624 flow [2024-02-02 09:14:51,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:51,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:51,512 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] [2024-02-02 09:14:51,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-02-02 09:14:51,512 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:51,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:51,512 INFO L85 PathProgramCache]: Analyzing trace with hash -955083049, now seen corresponding path program 1 times [2024-02-02 09:14:51,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:51,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744787737] [2024-02-02 09:14:51,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:51,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:51,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744787737] [2024-02-02 09:14:51,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744787737] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:51,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:51,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:14:51,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135029014] [2024-02-02 09:14:51,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:51,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:14:51,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:51,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:14:51,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:14:51,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:51,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 419 transitions, 7624 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:51,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:51,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:51,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:52,804 INFO L124 PetriNetUnfolderBase]: 2348/4254 cut-off events. [2024-02-02 09:14:52,804 INFO L125 PetriNetUnfolderBase]: For 92799/93083 co-relation queries the response was YES. [2024-02-02 09:14:52,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27368 conditions, 4254 events. 2348/4254 cut-off events. For 92799/93083 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 28921 event pairs, 646 based on Foata normal form. 57/4202 useless extension candidates. Maximal degree in co-relation 27256. Up to 3579 conditions per place. [2024-02-02 09:14:52,857 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 355 selfloop transitions, 69 changer transitions 0/447 dead transitions. [2024-02-02 09:14:52,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 447 transitions, 8612 flow [2024-02-02 09:14:52,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:14:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:14:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-02-02 09:14:52,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.369281045751634 [2024-02-02 09:14:52,858 INFO L175 Difference]: Start difference. First operand has 335 places, 419 transitions, 7624 flow. Second operand 9 states and 226 transitions. [2024-02-02 09:14:52,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 447 transitions, 8612 flow [2024-02-02 09:14:53,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 447 transitions, 8336 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 09:14:53,282 INFO L231 Difference]: Finished difference. Result has 338 places, 421 transitions, 7520 flow [2024-02-02 09:14:53,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7348, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7520, PETRI_PLACES=338, PETRI_TRANSITIONS=421} [2024-02-02 09:14:53,283 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 266 predicate places. [2024-02-02 09:14:53,283 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 421 transitions, 7520 flow [2024-02-02 09:14:53,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:53,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:53,283 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] [2024-02-02 09:14:53,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-02-02 09:14:53,283 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:53,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:53,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1025011895, now seen corresponding path program 1 times [2024-02-02 09:14:53,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:53,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990854017] [2024-02-02 09:14:53,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:53,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:53,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:53,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:53,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990854017] [2024-02-02 09:14:53,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990854017] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:53,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:53,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:14:53,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382102588] [2024-02-02 09:14:53,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:53,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:14:53,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:53,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:14:53,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:14:53,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:53,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 421 transitions, 7520 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:53,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:53,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:53,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:54,310 INFO L124 PetriNetUnfolderBase]: 1785/3496 cut-off events. [2024-02-02 09:14:54,310 INFO L125 PetriNetUnfolderBase]: For 84826/85045 co-relation queries the response was YES. [2024-02-02 09:14:54,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22608 conditions, 3496 events. 1785/3496 cut-off events. For 84826/85045 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 25212 event pairs, 258 based on Foata normal form. 114/3511 useless extension candidates. Maximal degree in co-relation 22495. Up to 1585 conditions per place. [2024-02-02 09:14:54,353 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 244 selfloop transitions, 176 changer transitions 0/461 dead transitions. [2024-02-02 09:14:54,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 461 transitions, 8706 flow [2024-02-02 09:14:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:14:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:14:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 350 transitions. [2024-02-02 09:14:54,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147058823529411 [2024-02-02 09:14:54,354 INFO L175 Difference]: Start difference. First operand has 338 places, 421 transitions, 7520 flow. Second operand 10 states and 350 transitions. [2024-02-02 09:14:54,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 461 transitions, 8706 flow [2024-02-02 09:14:54,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 461 transitions, 8631 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:54,673 INFO L231 Difference]: Finished difference. Result has 345 places, 424 transitions, 7907 flow [2024-02-02 09:14:54,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7445, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7907, PETRI_PLACES=345, PETRI_TRANSITIONS=424} [2024-02-02 09:14:54,676 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 273 predicate places. [2024-02-02 09:14:54,676 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 424 transitions, 7907 flow [2024-02-02 09:14:54,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:54,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:54,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:54,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-02-02 09:14:54,677 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:54,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:54,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1194888925, now seen corresponding path program 2 times [2024-02-02 09:14:54,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:54,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685799733] [2024-02-02 09:14:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:54,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:54,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:54,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685799733] [2024-02-02 09:14:54,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685799733] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:54,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:54,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:14:54,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714752451] [2024-02-02 09:14:54,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:54,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:14:54,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:54,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:14:54,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:14:54,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:54,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 424 transitions, 7907 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:54,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:54,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:54,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:56,045 INFO L124 PetriNetUnfolderBase]: 2425/4421 cut-off events. [2024-02-02 09:14:56,045 INFO L125 PetriNetUnfolderBase]: For 94910/95077 co-relation queries the response was YES. [2024-02-02 09:14:56,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28928 conditions, 4421 events. 2425/4421 cut-off events. For 94910/95077 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 30276 event pairs, 293 based on Foata normal form. 56/4380 useless extension candidates. Maximal degree in co-relation 28812. Up to 1616 conditions per place. [2024-02-02 09:14:56,090 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 294 selfloop transitions, 192 changer transitions 0/507 dead transitions. [2024-02-02 09:14:56,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 507 transitions, 9582 flow [2024-02-02 09:14:56,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:14:56,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:14:56,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 329 transitions. [2024-02-02 09:14:56,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40318627450980393 [2024-02-02 09:14:56,092 INFO L175 Difference]: Start difference. First operand has 345 places, 424 transitions, 7907 flow. Second operand 12 states and 329 transitions. [2024-02-02 09:14:56,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 507 transitions, 9582 flow [2024-02-02 09:14:56,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 507 transitions, 9303 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-02-02 09:14:56,487 INFO L231 Difference]: Finished difference. Result has 351 places, 440 transitions, 8243 flow [2024-02-02 09:14:56,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7636, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8243, PETRI_PLACES=351, PETRI_TRANSITIONS=440} [2024-02-02 09:14:56,488 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 279 predicate places. [2024-02-02 09:14:56,488 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 440 transitions, 8243 flow [2024-02-02 09:14:56,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:56,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:56,489 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] [2024-02-02 09:14:56,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-02-02 09:14:56,489 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:56,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:56,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1606125481, now seen corresponding path program 3 times [2024-02-02 09:14:56,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:56,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817069333] [2024-02-02 09:14:56,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:56,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:56,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:56,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817069333] [2024-02-02 09:14:56,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817069333] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:56,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:56,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:14:56,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828588469] [2024-02-02 09:14:56,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:56,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:14:56,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:56,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:14:56,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:14:56,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:56,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 440 transitions, 8243 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:56,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:56,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:56,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:57,876 INFO L124 PetriNetUnfolderBase]: 2413/4401 cut-off events. [2024-02-02 09:14:57,876 INFO L125 PetriNetUnfolderBase]: For 98585/98776 co-relation queries the response was YES. [2024-02-02 09:14:57,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30233 conditions, 4401 events. 2413/4401 cut-off events. For 98585/98776 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 30123 event pairs, 293 based on Foata normal form. 56/4360 useless extension candidates. Maximal degree in co-relation 30115. Up to 1612 conditions per place. [2024-02-02 09:14:57,929 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 302 selfloop transitions, 192 changer transitions 0/515 dead transitions. [2024-02-02 09:14:57,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 515 transitions, 9841 flow [2024-02-02 09:14:57,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-02 09:14:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-02 09:14:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 374 transitions. [2024-02-02 09:14:57,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-02-02 09:14:57,931 INFO L175 Difference]: Start difference. First operand has 351 places, 440 transitions, 8243 flow. Second operand 14 states and 374 transitions. [2024-02-02 09:14:57,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 515 transitions, 9841 flow [2024-02-02 09:14:58,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 515 transitions, 9524 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-02-02 09:14:58,374 INFO L231 Difference]: Finished difference. Result has 356 places, 440 transitions, 8318 flow [2024-02-02 09:14:58,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7926, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8318, PETRI_PLACES=356, PETRI_TRANSITIONS=440} [2024-02-02 09:14:58,375 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 284 predicate places. [2024-02-02 09:14:58,375 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 440 transitions, 8318 flow [2024-02-02 09:14:58,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:58,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:58,375 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] [2024-02-02 09:14:58,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-02-02 09:14:58,376 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:58,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:58,376 INFO L85 PathProgramCache]: Analyzing trace with hash 157684713, now seen corresponding path program 4 times [2024-02-02 09:14:58,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:58,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767001433] [2024-02-02 09:14:58,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:58,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:58,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:58,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767001433] [2024-02-02 09:14:58,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767001433] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:58,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:58,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:14:58,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127786856] [2024-02-02 09:14:58,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:58,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:14:58,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:58,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:14:58,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:14:58,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:58,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 440 transitions, 8318 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:58,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:58,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:58,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:59,794 INFO L124 PetriNetUnfolderBase]: 2569/4697 cut-off events. [2024-02-02 09:14:59,794 INFO L125 PetriNetUnfolderBase]: For 104733/104924 co-relation queries the response was YES. [2024-02-02 09:14:59,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31982 conditions, 4697 events. 2569/4697 cut-off events. For 104733/104924 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 32502 event pairs, 267 based on Foata normal form. 56/4656 useless extension candidates. Maximal degree in co-relation 31863. Up to 1668 conditions per place. [2024-02-02 09:14:59,850 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 272 selfloop transitions, 225 changer transitions 0/518 dead transitions. [2024-02-02 09:14:59,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 518 transitions, 10065 flow [2024-02-02 09:14:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 09:14:59,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 09:14:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 348 transitions. [2024-02-02 09:14:59,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936651583710407 [2024-02-02 09:14:59,852 INFO L175 Difference]: Start difference. First operand has 356 places, 440 transitions, 8318 flow. Second operand 13 states and 348 transitions. [2024-02-02 09:14:59,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 518 transitions, 10065 flow [2024-02-02 09:15:00,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 518 transitions, 9701 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-02-02 09:15:00,351 INFO L231 Difference]: Finished difference. Result has 359 places, 454 transitions, 8715 flow [2024-02-02 09:15:00,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7972, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8715, PETRI_PLACES=359, PETRI_TRANSITIONS=454} [2024-02-02 09:15:00,352 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 287 predicate places. [2024-02-02 09:15:00,352 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 454 transitions, 8715 flow [2024-02-02 09:15:00,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:00,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:00,352 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] [2024-02-02 09:15:00,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-02-02 09:15:00,353 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:00,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:00,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1905760719, now seen corresponding path program 5 times [2024-02-02 09:15:00,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:00,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004203967] [2024-02-02 09:15:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:00,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:00,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:00,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004203967] [2024-02-02 09:15:00,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004203967] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:00,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:00,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:00,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082618915] [2024-02-02 09:15:00,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:00,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:00,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:00,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:00,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:00,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:00,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 454 transitions, 8715 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:00,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:00,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:00,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:01,818 INFO L124 PetriNetUnfolderBase]: 2680/4860 cut-off events. [2024-02-02 09:15:01,818 INFO L125 PetriNetUnfolderBase]: For 114441/114632 co-relation queries the response was YES. [2024-02-02 09:15:01,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33900 conditions, 4860 events. 2680/4860 cut-off events. For 114441/114632 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 33532 event pairs, 278 based on Foata normal form. 56/4819 useless extension candidates. Maximal degree in co-relation 33779. Up to 1700 conditions per place. [2024-02-02 09:15:01,899 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 267 selfloop transitions, 236 changer transitions 0/524 dead transitions. [2024-02-02 09:15:01,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 524 transitions, 10352 flow [2024-02-02 09:15:01,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 09:15:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 09:15:01,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 343 transitions. [2024-02-02 09:15:01,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38800904977375567 [2024-02-02 09:15:01,900 INFO L175 Difference]: Start difference. First operand has 359 places, 454 transitions, 8715 flow. Second operand 13 states and 343 transitions. [2024-02-02 09:15:01,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 524 transitions, 10352 flow [2024-02-02 09:15:02,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 524 transitions, 10033 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-02-02 09:15:02,508 INFO L231 Difference]: Finished difference. Result has 365 places, 464 transitions, 9057 flow [2024-02-02 09:15:02,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8402, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9057, PETRI_PLACES=365, PETRI_TRANSITIONS=464} [2024-02-02 09:15:02,509 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 293 predicate places. [2024-02-02 09:15:02,509 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 464 transitions, 9057 flow [2024-02-02 09:15:02,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:02,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:02,510 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] [2024-02-02 09:15:02,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-02-02 09:15:02,510 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:02,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:02,510 INFO L85 PathProgramCache]: Analyzing trace with hash -334965057, now seen corresponding path program 2 times [2024-02-02 09:15:02,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:02,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831964048] [2024-02-02 09:15:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:02,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:02,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:02,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831964048] [2024-02-02 09:15:02,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831964048] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:02,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:02,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:02,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327197683] [2024-02-02 09:15:02,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:02,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:02,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:02,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:02,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:02,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:02,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 464 transitions, 9057 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:02,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:02,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:02,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:03,974 INFO L124 PetriNetUnfolderBase]: 2644/4791 cut-off events. [2024-02-02 09:15:03,974 INFO L125 PetriNetUnfolderBase]: For 125386/126189 co-relation queries the response was YES. [2024-02-02 09:15:04,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34875 conditions, 4791 events. 2644/4791 cut-off events. For 125386/126189 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 32930 event pairs, 420 based on Foata normal form. 79/4738 useless extension candidates. Maximal degree in co-relation 34752. Up to 1813 conditions per place. [2024-02-02 09:15:04,040 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 319 selfloop transitions, 181 changer transitions 0/529 dead transitions. [2024-02-02 09:15:04,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 529 transitions, 10523 flow [2024-02-02 09:15:04,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:15:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:15:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 319 transitions. [2024-02-02 09:15:04,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3909313725490196 [2024-02-02 09:15:04,041 INFO L175 Difference]: Start difference. First operand has 365 places, 464 transitions, 9057 flow. Second operand 12 states and 319 transitions. [2024-02-02 09:15:04,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 529 transitions, 10523 flow [2024-02-02 09:15:04,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 529 transitions, 10044 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-02-02 09:15:04,603 INFO L231 Difference]: Finished difference. Result has 367 places, 464 transitions, 8969 flow [2024-02-02 09:15:04,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8592, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8969, PETRI_PLACES=367, PETRI_TRANSITIONS=464} [2024-02-02 09:15:04,604 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 295 predicate places. [2024-02-02 09:15:04,604 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 464 transitions, 8969 flow [2024-02-02 09:15:04,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:04,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:04,605 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] [2024-02-02 09:15:04,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-02-02 09:15:04,605 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:04,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:04,605 INFO L85 PathProgramCache]: Analyzing trace with hash 854761363, now seen corresponding path program 6 times [2024-02-02 09:15:04,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:04,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906451553] [2024-02-02 09:15:04,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:04,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:04,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:04,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906451553] [2024-02-02 09:15:04,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906451553] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:04,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:04,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:04,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005095276] [2024-02-02 09:15:04,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:04,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:04,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:04,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:04,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:04,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:04,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 464 transitions, 8969 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:04,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:04,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:04,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:06,264 INFO L124 PetriNetUnfolderBase]: 2553/4650 cut-off events. [2024-02-02 09:15:06,264 INFO L125 PetriNetUnfolderBase]: For 112388/112571 co-relation queries the response was YES. [2024-02-02 09:15:06,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32434 conditions, 4650 events. 2553/4650 cut-off events. For 112388/112571 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 32128 event pairs, 435 based on Foata normal form. 102/4660 useless extension candidates. Maximal degree in co-relation 32311. Up to 2331 conditions per place. [2024-02-02 09:15:06,340 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 329 selfloop transitions, 166 changer transitions 0/516 dead transitions. [2024-02-02 09:15:06,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 516 transitions, 10435 flow [2024-02-02 09:15:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:15:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:15:06,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-02-02 09:15:06,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3985294117647059 [2024-02-02 09:15:06,346 INFO L175 Difference]: Start difference. First operand has 367 places, 464 transitions, 8969 flow. Second operand 10 states and 271 transitions. [2024-02-02 09:15:06,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 516 transitions, 10435 flow [2024-02-02 09:15:06,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 516 transitions, 10055 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-02-02 09:15:06,973 INFO L231 Difference]: Finished difference. Result has 366 places, 464 transitions, 8963 flow [2024-02-02 09:15:06,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8601, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8963, PETRI_PLACES=366, PETRI_TRANSITIONS=464} [2024-02-02 09:15:06,974 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 294 predicate places. [2024-02-02 09:15:06,975 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 464 transitions, 8963 flow [2024-02-02 09:15:06,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:06,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:06,975 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] [2024-02-02 09:15:06,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-02-02 09:15:06,975 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:06,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:06,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1862578175, now seen corresponding path program 7 times [2024-02-02 09:15:06,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:06,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981453343] [2024-02-02 09:15:06,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:06,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:07,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:07,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981453343] [2024-02-02 09:15:07,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981453343] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:07,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:07,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:07,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150396509] [2024-02-02 09:15:07,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:07,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:07,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:07,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:07,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:07,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:07,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 464 transitions, 8963 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:07,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:07,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:07,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:08,574 INFO L124 PetriNetUnfolderBase]: 2511/4580 cut-off events. [2024-02-02 09:15:08,574 INFO L125 PetriNetUnfolderBase]: For 103315/103498 co-relation queries the response was YES. [2024-02-02 09:15:08,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31941 conditions, 4580 events. 2511/4580 cut-off events. For 103315/103498 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 31581 event pairs, 413 based on Foata normal form. 68/4556 useless extension candidates. Maximal degree in co-relation 31817. Up to 2317 conditions per place. [2024-02-02 09:15:08,647 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 331 selfloop transitions, 166 changer transitions 0/518 dead transitions. [2024-02-02 09:15:08,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 518 transitions, 10429 flow [2024-02-02 09:15:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:15:08,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:15:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 291 transitions. [2024-02-02 09:15:08,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3890374331550802 [2024-02-02 09:15:08,648 INFO L175 Difference]: Start difference. First operand has 366 places, 464 transitions, 8963 flow. Second operand 11 states and 291 transitions. [2024-02-02 09:15:08,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 518 transitions, 10429 flow [2024-02-02 09:15:09,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 518 transitions, 10110 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-02 09:15:09,129 INFO L231 Difference]: Finished difference. Result has 367 places, 464 transitions, 9012 flow [2024-02-02 09:15:09,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8644, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9012, PETRI_PLACES=367, PETRI_TRANSITIONS=464} [2024-02-02 09:15:09,130 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 295 predicate places. [2024-02-02 09:15:09,130 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 464 transitions, 9012 flow [2024-02-02 09:15:09,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:09,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:09,130 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] [2024-02-02 09:15:09,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-02-02 09:15:09,130 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:09,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:09,131 INFO L85 PathProgramCache]: Analyzing trace with hash -51379845, now seen corresponding path program 8 times [2024-02-02 09:15:09,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:09,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604288326] [2024-02-02 09:15:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:09,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:09,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:09,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604288326] [2024-02-02 09:15:09,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604288326] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:09,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:09,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:09,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266638315] [2024-02-02 09:15:09,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:09,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:09,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:09,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:09,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:09,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:09,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 464 transitions, 9012 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:09,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:09,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:09,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:10,619 INFO L124 PetriNetUnfolderBase]: 2463/4500 cut-off events. [2024-02-02 09:15:10,620 INFO L125 PetriNetUnfolderBase]: For 102932/103115 co-relation queries the response was YES. [2024-02-02 09:15:10,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31491 conditions, 4500 events. 2463/4500 cut-off events. For 102932/103115 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 31011 event pairs, 413 based on Foata normal form. 72/4480 useless extension candidates. Maximal degree in co-relation 31367. Up to 2301 conditions per place. [2024-02-02 09:15:10,681 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 307 selfloop transitions, 178 changer transitions 0/506 dead transitions. [2024-02-02 09:15:10,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 506 transitions, 10295 flow [2024-02-02 09:15:10,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:15:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:15:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2024-02-02 09:15:10,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911764705882353 [2024-02-02 09:15:10,683 INFO L175 Difference]: Start difference. First operand has 367 places, 464 transitions, 9012 flow. Second operand 10 states and 266 transitions. [2024-02-02 09:15:10,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 506 transitions, 10295 flow [2024-02-02 09:15:11,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 506 transitions, 9963 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-02 09:15:11,156 INFO L231 Difference]: Finished difference. Result has 367 places, 464 transitions, 9052 flow [2024-02-02 09:15:11,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8680, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9052, PETRI_PLACES=367, PETRI_TRANSITIONS=464} [2024-02-02 09:15:11,157 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 295 predicate places. [2024-02-02 09:15:11,157 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 464 transitions, 9052 flow [2024-02-02 09:15:11,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:11,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:11,157 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] [2024-02-02 09:15:11,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-02-02 09:15:11,157 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:11,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:11,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1664141997, now seen corresponding path program 3 times [2024-02-02 09:15:11,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:11,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998747449] [2024-02-02 09:15:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:11,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:11,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:11,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998747449] [2024-02-02 09:15:11,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998747449] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:11,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:11,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:11,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325305051] [2024-02-02 09:15:11,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:11,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:11,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:11,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:11,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:11,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:11,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 464 transitions, 9052 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:11,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:11,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:11,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:12,678 INFO L124 PetriNetUnfolderBase]: 2455/4461 cut-off events. [2024-02-02 09:15:12,679 INFO L125 PetriNetUnfolderBase]: For 109298/110076 co-relation queries the response was YES. [2024-02-02 09:15:12,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31872 conditions, 4461 events. 2455/4461 cut-off events. For 109298/110076 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 30624 event pairs, 497 based on Foata normal form. 81/4393 useless extension candidates. Maximal degree in co-relation 31747. Up to 3222 conditions per place. [2024-02-02 09:15:12,739 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 390 selfloop transitions, 111 changer transitions 0/530 dead transitions. [2024-02-02 09:15:12,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 530 transitions, 10494 flow [2024-02-02 09:15:12,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 09:15:12,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 09:15:12,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 332 transitions. [2024-02-02 09:15:12,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755656108597285 [2024-02-02 09:15:12,740 INFO L175 Difference]: Start difference. First operand has 367 places, 464 transitions, 9052 flow. Second operand 13 states and 332 transitions. [2024-02-02 09:15:12,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 530 transitions, 10494 flow [2024-02-02 09:15:13,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 530 transitions, 10132 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 09:15:13,237 INFO L231 Difference]: Finished difference. Result has 373 places, 464 transitions, 8930 flow [2024-02-02 09:15:13,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8690, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8930, PETRI_PLACES=373, PETRI_TRANSITIONS=464} [2024-02-02 09:15:13,238 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 301 predicate places. [2024-02-02 09:15:13,238 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 464 transitions, 8930 flow [2024-02-02 09:15:13,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:13,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:13,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:13,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-02-02 09:15:13,239 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:13,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1893588019, now seen corresponding path program 4 times [2024-02-02 09:15:13,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:13,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752845806] [2024-02-02 09:15:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:13,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:13,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:13,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752845806] [2024-02-02 09:15:13,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752845806] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:13,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:13,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:13,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475627027] [2024-02-02 09:15:13,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:13,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:13,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:13,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:13,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:13,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:13,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 464 transitions, 8930 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:13,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:13,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:13,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:14,894 INFO L124 PetriNetUnfolderBase]: 2439/4433 cut-off events. [2024-02-02 09:15:14,895 INFO L125 PetriNetUnfolderBase]: For 105797/106578 co-relation queries the response was YES. [2024-02-02 09:15:14,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31300 conditions, 4433 events. 2439/4433 cut-off events. For 105797/106578 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 30487 event pairs, 493 based on Foata normal form. 85/4369 useless extension candidates. Maximal degree in co-relation 31173. Up to 3216 conditions per place. [2024-02-02 09:15:14,956 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 378 selfloop transitions, 117 changer transitions 0/524 dead transitions. [2024-02-02 09:15:14,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 524 transitions, 10256 flow [2024-02-02 09:15:14,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-02 09:15:14,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-02 09:15:14,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 348 transitions. [2024-02-02 09:15:14,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36554621848739494 [2024-02-02 09:15:14,957 INFO L175 Difference]: Start difference. First operand has 373 places, 464 transitions, 8930 flow. Second operand 14 states and 348 transitions. [2024-02-02 09:15:14,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 524 transitions, 10256 flow [2024-02-02 09:15:15,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 524 transitions, 9967 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-02-02 09:15:15,423 INFO L231 Difference]: Finished difference. Result has 375 places, 464 transitions, 8887 flow [2024-02-02 09:15:15,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8641, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8887, PETRI_PLACES=375, PETRI_TRANSITIONS=464} [2024-02-02 09:15:15,424 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 303 predicate places. [2024-02-02 09:15:15,424 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 464 transitions, 8887 flow [2024-02-02 09:15:15,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:15,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:15,424 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] [2024-02-02 09:15:15,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-02-02 09:15:15,424 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:15,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:15,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2126890263, now seen corresponding path program 2 times [2024-02-02 09:15:15,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:15,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452694680] [2024-02-02 09:15:15,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:15,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:15,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:15,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452694680] [2024-02-02 09:15:15,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452694680] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:15,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:15,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:15,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190850718] [2024-02-02 09:15:15,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:15,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:15,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:15,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:15,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:15,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:15,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 464 transitions, 8887 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:15,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:15,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:15,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:16,877 INFO L124 PetriNetUnfolderBase]: 2475/4483 cut-off events. [2024-02-02 09:15:16,877 INFO L125 PetriNetUnfolderBase]: For 106482/107253 co-relation queries the response was YES. [2024-02-02 09:15:16,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31752 conditions, 4483 events. 2475/4483 cut-off events. For 106482/107253 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30711 event pairs, 550 based on Foata normal form. 81/4405 useless extension candidates. Maximal degree in co-relation 31624. Up to 3889 conditions per place. [2024-02-02 09:15:16,938 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 406 selfloop transitions, 50 changer transitions 0/485 dead transitions. [2024-02-02 09:15:16,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 485 transitions, 9904 flow [2024-02-02 09:15:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-02-02 09:15:16,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3713235294117647 [2024-02-02 09:15:16,939 INFO L175 Difference]: Start difference. First operand has 375 places, 464 transitions, 8887 flow. Second operand 8 states and 202 transitions. [2024-02-02 09:15:16,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 485 transitions, 9904 flow [2024-02-02 09:15:17,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 485 transitions, 9712 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-02 09:15:17,398 INFO L231 Difference]: Finished difference. Result has 373 places, 465 transitions, 8816 flow [2024-02-02 09:15:17,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8695, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8816, PETRI_PLACES=373, PETRI_TRANSITIONS=465} [2024-02-02 09:15:17,399 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 301 predicate places. [2024-02-02 09:15:17,399 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 465 transitions, 8816 flow [2024-02-02 09:15:17,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:17,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:17,399 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] [2024-02-02 09:15:17,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-02-02 09:15:17,399 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:17,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:17,400 INFO L85 PathProgramCache]: Analyzing trace with hash 930070663, now seen corresponding path program 3 times [2024-02-02 09:15:17,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:17,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333831095] [2024-02-02 09:15:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:17,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:17,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:17,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333831095] [2024-02-02 09:15:17,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333831095] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:17,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:17,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:17,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940631238] [2024-02-02 09:15:17,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:17,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:17,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:17,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:17,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:17,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:17,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 465 transitions, 8816 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:17,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:17,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:17,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:18,634 INFO L124 PetriNetUnfolderBase]: 2445/4481 cut-off events. [2024-02-02 09:15:18,635 INFO L125 PetriNetUnfolderBase]: For 103177/103942 co-relation queries the response was YES. [2024-02-02 09:15:18,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31228 conditions, 4481 events. 2445/4481 cut-off events. For 103177/103942 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 31047 event pairs, 509 based on Foata normal form. 84/4422 useless extension candidates. Maximal degree in co-relation 31099. Up to 3274 conditions per place. [2024-02-02 09:15:18,691 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 378 selfloop transitions, 106 changer transitions 0/513 dead transitions. [2024-02-02 09:15:18,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 513 transitions, 10190 flow [2024-02-02 09:15:18,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:15:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:15:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-02-02 09:15:18,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-02-02 09:15:18,692 INFO L175 Difference]: Start difference. First operand has 373 places, 465 transitions, 8816 flow. Second operand 9 states and 234 transitions. [2024-02-02 09:15:18,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 513 transitions, 10190 flow [2024-02-02 09:15:19,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 513 transitions, 10090 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-02 09:15:19,137 INFO L231 Difference]: Finished difference. Result has 377 places, 481 transitions, 9227 flow [2024-02-02 09:15:19,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8722, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9227, PETRI_PLACES=377, PETRI_TRANSITIONS=481} [2024-02-02 09:15:19,138 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 305 predicate places. [2024-02-02 09:15:19,138 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 481 transitions, 9227 flow [2024-02-02 09:15:19,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:19,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:19,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:19,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-02-02 09:15:19,138 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:19,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:19,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2089268773, now seen corresponding path program 4 times [2024-02-02 09:15:19,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:19,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362838513] [2024-02-02 09:15:19,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:19,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:19,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:19,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362838513] [2024-02-02 09:15:19,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362838513] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:19,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:19,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007430744] [2024-02-02 09:15:19,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:19,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:19,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:19,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:19,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:19,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 481 transitions, 9227 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:19,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:19,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:19,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:20,421 INFO L124 PetriNetUnfolderBase]: 2443/4475 cut-off events. [2024-02-02 09:15:20,421 INFO L125 PetriNetUnfolderBase]: For 105763/106536 co-relation queries the response was YES. [2024-02-02 09:15:20,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31742 conditions, 4475 events. 2443/4475 cut-off events. For 105763/106536 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 31017 event pairs, 515 based on Foata normal form. 78/4410 useless extension candidates. Maximal degree in co-relation 31611. Up to 3274 conditions per place. [2024-02-02 09:15:20,478 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 367 selfloop transitions, 114 changer transitions 0/510 dead transitions. [2024-02-02 09:15:20,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 510 transitions, 10335 flow [2024-02-02 09:15:20,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:15:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:15:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-02-02 09:15:20,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37745098039215685 [2024-02-02 09:15:20,487 INFO L175 Difference]: Start difference. First operand has 377 places, 481 transitions, 9227 flow. Second operand 9 states and 231 transitions. [2024-02-02 09:15:20,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 510 transitions, 10335 flow [2024-02-02 09:15:20,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 510 transitions, 10211 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:20,944 INFO L231 Difference]: Finished difference. Result has 382 places, 481 transitions, 9337 flow [2024-02-02 09:15:20,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9103, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9337, PETRI_PLACES=382, PETRI_TRANSITIONS=481} [2024-02-02 09:15:20,944 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 310 predicate places. [2024-02-02 09:15:20,945 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 481 transitions, 9337 flow [2024-02-02 09:15:20,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:20,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:20,945 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] [2024-02-02 09:15:20,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-02-02 09:15:20,945 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:20,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:20,946 INFO L85 PathProgramCache]: Analyzing trace with hash 401273361, now seen corresponding path program 6 times [2024-02-02 09:15:20,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:20,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046706263] [2024-02-02 09:15:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:20,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:21,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:21,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046706263] [2024-02-02 09:15:21,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046706263] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:21,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:21,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:21,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435906105] [2024-02-02 09:15:21,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:21,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:15:21,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:21,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:15:21,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:15:21,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:21,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 481 transitions, 9337 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:21,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:21,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:21,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:22,125 INFO L124 PetriNetUnfolderBase]: 1897/3747 cut-off events. [2024-02-02 09:15:22,125 INFO L125 PetriNetUnfolderBase]: For 108403/108875 co-relation queries the response was YES. [2024-02-02 09:15:22,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27492 conditions, 3747 events. 1897/3747 cut-off events. For 108403/108875 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 27599 event pairs, 200 based on Foata normal form. 141/3765 useless extension candidates. Maximal degree in co-relation 27360. Up to 1131 conditions per place. [2024-02-02 09:15:22,172 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 281 selfloop transitions, 206 changer transitions 0/534 dead transitions. [2024-02-02 09:15:22,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 534 transitions, 10872 flow [2024-02-02 09:15:22,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:15:22,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:15:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 354 transitions. [2024-02-02 09:15:22,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205882352941177 [2024-02-02 09:15:22,174 INFO L175 Difference]: Start difference. First operand has 382 places, 481 transitions, 9337 flow. Second operand 10 states and 354 transitions. [2024-02-02 09:15:22,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 534 transitions, 10872 flow [2024-02-02 09:15:22,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 534 transitions, 10690 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-02-02 09:15:22,587 INFO L231 Difference]: Finished difference. Result has 386 places, 489 transitions, 9723 flow [2024-02-02 09:15:22,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9156, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9723, PETRI_PLACES=386, PETRI_TRANSITIONS=489} [2024-02-02 09:15:22,588 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 314 predicate places. [2024-02-02 09:15:22,588 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 489 transitions, 9723 flow [2024-02-02 09:15:22,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:22,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:22,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:22,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-02-02 09:15:22,589 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:22,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:22,589 INFO L85 PathProgramCache]: Analyzing trace with hash -981815431, now seen corresponding path program 2 times [2024-02-02 09:15:22,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:22,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844521494] [2024-02-02 09:15:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:22,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:22,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844521494] [2024-02-02 09:15:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844521494] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:22,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:22,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:22,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241260029] [2024-02-02 09:15:22,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:22,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:15:22,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:22,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:15:22,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:15:22,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:22,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 489 transitions, 9723 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:22,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:22,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:22,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:23,780 INFO L124 PetriNetUnfolderBase]: 1929/3811 cut-off events. [2024-02-02 09:15:23,780 INFO L125 PetriNetUnfolderBase]: For 112552/113024 co-relation queries the response was YES. [2024-02-02 09:15:23,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28528 conditions, 3811 events. 1929/3811 cut-off events. For 112552/113024 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 28204 event pairs, 200 based on Foata normal form. 129/3817 useless extension candidates. Maximal degree in co-relation 28394. Up to 1143 conditions per place. [2024-02-02 09:15:23,831 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 287 selfloop transitions, 211 changer transitions 0/545 dead transitions. [2024-02-02 09:15:23,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 545 transitions, 11299 flow [2024-02-02 09:15:23,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:15:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:15:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 418 transitions. [2024-02-02 09:15:23,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5122549019607843 [2024-02-02 09:15:23,832 INFO L175 Difference]: Start difference. First operand has 386 places, 489 transitions, 9723 flow. Second operand 12 states and 418 transitions. [2024-02-02 09:15:23,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 545 transitions, 11299 flow [2024-02-02 09:15:24,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 545 transitions, 10468 flow, removed 40 selfloop flow, removed 13 redundant places. [2024-02-02 09:15:24,286 INFO L231 Difference]: Finished difference. Result has 386 places, 492 transitions, 9398 flow [2024-02-02 09:15:24,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8920, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9398, PETRI_PLACES=386, PETRI_TRANSITIONS=492} [2024-02-02 09:15:24,286 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 314 predicate places. [2024-02-02 09:15:24,287 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 492 transitions, 9398 flow [2024-02-02 09:15:24,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:24,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:24,287 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] [2024-02-02 09:15:24,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-02-02 09:15:24,287 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:24,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:24,288 INFO L85 PathProgramCache]: Analyzing trace with hash 191870097, now seen corresponding path program 3 times [2024-02-02 09:15:24,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:24,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142073053] [2024-02-02 09:15:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:24,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:24,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:24,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:24,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142073053] [2024-02-02 09:15:24,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142073053] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:24,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:24,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:24,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137161438] [2024-02-02 09:15:24,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:24,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:15:24,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:24,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:15:24,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:15:24,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:24,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 492 transitions, 9398 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:24,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:24,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:24,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:25,512 INFO L124 PetriNetUnfolderBase]: 1927/3805 cut-off events. [2024-02-02 09:15:25,512 INFO L125 PetriNetUnfolderBase]: For 108594/109058 co-relation queries the response was YES. [2024-02-02 09:15:25,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26618 conditions, 3805 events. 1927/3805 cut-off events. For 108594/109058 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 28051 event pairs, 193 based on Foata normal form. 103/3776 useless extension candidates. Maximal degree in co-relation 26488. Up to 1147 conditions per place. [2024-02-02 09:15:25,557 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 239 selfloop transitions, 246 changer transitions 0/532 dead transitions. [2024-02-02 09:15:25,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 532 transitions, 10668 flow [2024-02-02 09:15:25,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:15:25,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:15:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 377 transitions. [2024-02-02 09:15:25,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040106951871658 [2024-02-02 09:15:25,559 INFO L175 Difference]: Start difference. First operand has 386 places, 492 transitions, 9398 flow. Second operand 11 states and 377 transitions. [2024-02-02 09:15:25,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 532 transitions, 10668 flow [2024-02-02 09:15:25,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 532 transitions, 9908 flow, removed 10 selfloop flow, removed 27 redundant places. [2024-02-02 09:15:25,911 INFO L231 Difference]: Finished difference. Result has 368 places, 492 transitions, 9090 flow [2024-02-02 09:15:25,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8590, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9090, PETRI_PLACES=368, PETRI_TRANSITIONS=492} [2024-02-02 09:15:25,912 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 296 predicate places. [2024-02-02 09:15:25,912 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 492 transitions, 9090 flow [2024-02-02 09:15:25,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:25,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:25,912 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] [2024-02-02 09:15:25,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-02-02 09:15:25,914 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:25,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:25,914 INFO L85 PathProgramCache]: Analyzing trace with hash 361151475, now seen corresponding path program 5 times [2024-02-02 09:15:25,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:25,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638202928] [2024-02-02 09:15:25,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:25,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:26,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:26,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638202928] [2024-02-02 09:15:26,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638202928] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:26,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:26,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:26,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567048124] [2024-02-02 09:15:26,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:26,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:26,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:26,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:26,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:26,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:26,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 492 transitions, 9090 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:26,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:26,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:26,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:27,454 INFO L124 PetriNetUnfolderBase]: 2832/5127 cut-off events. [2024-02-02 09:15:27,455 INFO L125 PetriNetUnfolderBase]: For 112568/113385 co-relation queries the response was YES. [2024-02-02 09:15:27,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33218 conditions, 5127 events. 2832/5127 cut-off events. For 112568/113385 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 36071 event pairs, 565 based on Foata normal form. 104/5064 useless extension candidates. Maximal degree in co-relation 33107. Up to 3882 conditions per place. [2024-02-02 09:15:27,515 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 460 selfloop transitions, 100 changer transitions 0/589 dead transitions. [2024-02-02 09:15:27,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 589 transitions, 11246 flow [2024-02-02 09:15:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:15:27,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:15:27,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 313 transitions. [2024-02-02 09:15:27,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38357843137254904 [2024-02-02 09:15:27,517 INFO L175 Difference]: Start difference. First operand has 368 places, 492 transitions, 9090 flow. Second operand 12 states and 313 transitions. [2024-02-02 09:15:27,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 589 transitions, 11246 flow [2024-02-02 09:15:27,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 589 transitions, 10585 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-02 09:15:27,937 INFO L231 Difference]: Finished difference. Result has 374 places, 521 transitions, 9263 flow [2024-02-02 09:15:27,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8480, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9263, PETRI_PLACES=374, PETRI_TRANSITIONS=521} [2024-02-02 09:15:27,938 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 302 predicate places. [2024-02-02 09:15:27,938 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 521 transitions, 9263 flow [2024-02-02 09:15:27,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:27,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:27,939 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] [2024-02-02 09:15:27,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-02-02 09:15:27,939 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:27,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:27,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1450913139, now seen corresponding path program 9 times [2024-02-02 09:15:27,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:27,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705214232] [2024-02-02 09:15:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:27,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:28,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:28,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705214232] [2024-02-02 09:15:28,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705214232] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:28,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:28,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:28,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991358418] [2024-02-02 09:15:28,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:28,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:28,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:28,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 521 transitions, 9263 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:28,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:28,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:28,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:29,443 INFO L124 PetriNetUnfolderBase]: 2772/5093 cut-off events. [2024-02-02 09:15:29,443 INFO L125 PetriNetUnfolderBase]: For 100775/100992 co-relation queries the response was YES. [2024-02-02 09:15:29,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31662 conditions, 5093 events. 2772/5093 cut-off events. For 100775/100992 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 36072 event pairs, 409 based on Foata normal form. 55/5061 useless extension candidates. Maximal degree in co-relation 31547. Up to 1754 conditions per place. [2024-02-02 09:15:29,503 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 333 selfloop transitions, 229 changer transitions 0/583 dead transitions. [2024-02-02 09:15:29,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 583 transitions, 10920 flow [2024-02-02 09:15:29,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:15:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:15:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 315 transitions. [2024-02-02 09:15:29,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-02-02 09:15:29,504 INFO L175 Difference]: Start difference. First operand has 374 places, 521 transitions, 9263 flow. Second operand 12 states and 315 transitions. [2024-02-02 09:15:29,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 583 transitions, 10920 flow [2024-02-02 09:15:29,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 583 transitions, 10783 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 09:15:29,951 INFO L231 Difference]: Finished difference. Result has 379 places, 521 transitions, 9600 flow [2024-02-02 09:15:29,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9126, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9600, PETRI_PLACES=379, PETRI_TRANSITIONS=521} [2024-02-02 09:15:29,952 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 307 predicate places. [2024-02-02 09:15:29,952 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 521 transitions, 9600 flow [2024-02-02 09:15:29,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:29,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:29,952 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] [2024-02-02 09:15:29,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-02-02 09:15:29,953 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:29,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:29,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1687205081, now seen corresponding path program 6 times [2024-02-02 09:15:29,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:29,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103157418] [2024-02-02 09:15:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:29,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:30,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:30,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103157418] [2024-02-02 09:15:30,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103157418] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:30,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:30,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:30,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175816863] [2024-02-02 09:15:30,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:30,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:30,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:30,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:30,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:30,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:30,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 521 transitions, 9600 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:30,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:30,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:30,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:31,441 INFO L124 PetriNetUnfolderBase]: 2804/5080 cut-off events. [2024-02-02 09:15:31,442 INFO L125 PetriNetUnfolderBase]: For 118464/119276 co-relation queries the response was YES. [2024-02-02 09:15:31,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33089 conditions, 5080 events. 2804/5080 cut-off events. For 118464/119276 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 35680 event pairs, 558 based on Foata normal form. 108/5020 useless extension candidates. Maximal degree in co-relation 32973. Up to 3856 conditions per place. [2024-02-02 09:15:31,503 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 449 selfloop transitions, 104 changer transitions 0/582 dead transitions. [2024-02-02 09:15:31,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 582 transitions, 11123 flow [2024-02-02 09:15:31,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:15:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:15:31,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 311 transitions. [2024-02-02 09:15:31,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38112745098039214 [2024-02-02 09:15:31,504 INFO L175 Difference]: Start difference. First operand has 379 places, 521 transitions, 9600 flow. Second operand 12 states and 311 transitions. [2024-02-02 09:15:31,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 582 transitions, 11123 flow [2024-02-02 09:15:31,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 582 transitions, 10661 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-02-02 09:15:31,939 INFO L231 Difference]: Finished difference. Result has 381 places, 523 transitions, 9424 flow [2024-02-02 09:15:31,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9138, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9424, PETRI_PLACES=381, PETRI_TRANSITIONS=523} [2024-02-02 09:15:31,939 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 309 predicate places. [2024-02-02 09:15:31,940 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 523 transitions, 9424 flow [2024-02-02 09:15:31,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:31,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:31,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:31,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-02-02 09:15:31,940 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:31,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:31,941 INFO L85 PathProgramCache]: Analyzing trace with hash 679882787, now seen corresponding path program 7 times [2024-02-02 09:15:31,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:31,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758192423] [2024-02-02 09:15:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:31,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:32,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:32,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758192423] [2024-02-02 09:15:32,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758192423] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:32,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:32,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:32,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686017895] [2024-02-02 09:15:32,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:32,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:32,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:32,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:32,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:32,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:32,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 523 transitions, 9424 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:32,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:32,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:32,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:33,462 INFO L124 PetriNetUnfolderBase]: 2874/5246 cut-off events. [2024-02-02 09:15:33,463 INFO L125 PetriNetUnfolderBase]: For 112379/113189 co-relation queries the response was YES. [2024-02-02 09:15:33,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33008 conditions, 5246 events. 2874/5246 cut-off events. For 112379/113189 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 37357 event pairs, 453 based on Foata normal form. 92/5183 useless extension candidates. Maximal degree in co-relation 32890. Up to 2624 conditions per place. [2024-02-02 09:15:33,525 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 386 selfloop transitions, 188 changer transitions 0/603 dead transitions. [2024-02-02 09:15:33,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 603 transitions, 11215 flow [2024-02-02 09:15:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:15:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:15:33,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 317 transitions. [2024-02-02 09:15:33,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38848039215686275 [2024-02-02 09:15:33,526 INFO L175 Difference]: Start difference. First operand has 381 places, 523 transitions, 9424 flow. Second operand 12 states and 317 transitions. [2024-02-02 09:15:33,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 603 transitions, 11215 flow [2024-02-02 09:15:33,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 603 transitions, 11063 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-02 09:15:33,977 INFO L231 Difference]: Finished difference. Result has 386 places, 532 transitions, 9778 flow [2024-02-02 09:15:33,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9272, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9778, PETRI_PLACES=386, PETRI_TRANSITIONS=532} [2024-02-02 09:15:33,978 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 314 predicate places. [2024-02-02 09:15:33,978 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 532 transitions, 9778 flow [2024-02-02 09:15:33,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:33,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:33,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:33,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-02-02 09:15:33,979 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:33,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:33,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2079945817, now seen corresponding path program 8 times [2024-02-02 09:15:33,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:33,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197019058] [2024-02-02 09:15:33,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:33,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:34,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:34,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197019058] [2024-02-02 09:15:34,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197019058] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:34,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:34,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:34,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616487589] [2024-02-02 09:15:34,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:34,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:34,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:34,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:34,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:34,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:34,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 532 transitions, 9778 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:34,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:34,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:34,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:35,529 INFO L124 PetriNetUnfolderBase]: 2924/5287 cut-off events. [2024-02-02 09:15:35,530 INFO L125 PetriNetUnfolderBase]: For 122988/123841 co-relation queries the response was YES. [2024-02-02 09:15:35,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34223 conditions, 5287 events. 2924/5287 cut-off events. For 122988/123841 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37363 event pairs, 617 based on Foata normal form. 104/5224 useless extension candidates. Maximal degree in co-relation 34103. Up to 4080 conditions per place. [2024-02-02 09:15:35,599 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 468 selfloop transitions, 100 changer transitions 0/597 dead transitions. [2024-02-02 09:15:35,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 597 transitions, 11322 flow [2024-02-02 09:15:35,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 09:15:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 09:15:35,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 330 transitions. [2024-02-02 09:15:35,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3733031674208145 [2024-02-02 09:15:35,600 INFO L175 Difference]: Start difference. First operand has 386 places, 532 transitions, 9778 flow. Second operand 13 states and 330 transitions. [2024-02-02 09:15:35,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 597 transitions, 11322 flow [2024-02-02 09:15:36,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 597 transitions, 11023 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-02 09:15:36,110 INFO L231 Difference]: Finished difference. Result has 391 places, 532 transitions, 9693 flow [2024-02-02 09:15:36,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9479, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9693, PETRI_PLACES=391, PETRI_TRANSITIONS=532} [2024-02-02 09:15:36,111 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 319 predicate places. [2024-02-02 09:15:36,111 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 532 transitions, 9693 flow [2024-02-02 09:15:36,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:36,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:36,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:36,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-02-02 09:15:36,111 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:36,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:36,112 INFO L85 PathProgramCache]: Analyzing trace with hash 706577507, now seen corresponding path program 9 times [2024-02-02 09:15:36,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:36,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017619003] [2024-02-02 09:15:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:36,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:36,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:36,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017619003] [2024-02-02 09:15:36,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017619003] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:36,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:36,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:36,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009623363] [2024-02-02 09:15:36,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:36,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:36,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:36,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:36,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:36,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 532 transitions, 9693 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:36,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:36,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:36,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:37,656 INFO L124 PetriNetUnfolderBase]: 2850/5206 cut-off events. [2024-02-02 09:15:37,656 INFO L125 PetriNetUnfolderBase]: For 118242/119051 co-relation queries the response was YES. [2024-02-02 09:15:37,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33233 conditions, 5206 events. 2850/5206 cut-off events. For 118242/119051 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 37067 event pairs, 449 based on Foata normal form. 92/5143 useless extension candidates. Maximal degree in co-relation 33112. Up to 2616 conditions per place. [2024-02-02 09:15:37,733 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 392 selfloop transitions, 188 changer transitions 0/609 dead transitions. [2024-02-02 09:15:37,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 609 transitions, 11387 flow [2024-02-02 09:15:37,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-02 09:15:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-02 09:15:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 360 transitions. [2024-02-02 09:15:37,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37815126050420167 [2024-02-02 09:15:37,735 INFO L175 Difference]: Start difference. First operand has 391 places, 532 transitions, 9693 flow. Second operand 14 states and 360 transitions. [2024-02-02 09:15:37,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 609 transitions, 11387 flow [2024-02-02 09:15:38,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 609 transitions, 11131 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-02-02 09:15:38,270 INFO L231 Difference]: Finished difference. Result has 395 places, 532 transitions, 9821 flow [2024-02-02 09:15:38,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9437, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9821, PETRI_PLACES=395, PETRI_TRANSITIONS=532} [2024-02-02 09:15:38,271 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 323 predicate places. [2024-02-02 09:15:38,271 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 532 transitions, 9821 flow [2024-02-02 09:15:38,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:38,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:38,271 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] [2024-02-02 09:15:38,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-02-02 09:15:38,271 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:38,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:38,272 INFO L85 PathProgramCache]: Analyzing trace with hash -363716761, now seen corresponding path program 10 times [2024-02-02 09:15:38,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:38,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104221432] [2024-02-02 09:15:38,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:38,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:38,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:38,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104221432] [2024-02-02 09:15:38,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104221432] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:38,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:38,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:38,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104701551] [2024-02-02 09:15:38,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:38,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:38,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:38,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:38,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:38,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:38,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 532 transitions, 9821 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:38,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:38,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:38,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:39,900 INFO L124 PetriNetUnfolderBase]: 2838/5183 cut-off events. [2024-02-02 09:15:39,900 INFO L125 PetriNetUnfolderBase]: For 119327/120142 co-relation queries the response was YES. [2024-02-02 09:15:39,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33402 conditions, 5183 events. 2838/5183 cut-off events. For 119327/120142 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 36834 event pairs, 426 based on Foata normal form. 82/5110 useless extension candidates. Maximal degree in co-relation 33280. Up to 2612 conditions per place. [2024-02-02 09:15:39,949 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 357 selfloop transitions, 211 changer transitions 0/597 dead transitions. [2024-02-02 09:15:39,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 597 transitions, 11351 flow [2024-02-02 09:15:39,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 09:15:39,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 09:15:39,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 330 transitions. [2024-02-02 09:15:39,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3733031674208145 [2024-02-02 09:15:39,951 INFO L175 Difference]: Start difference. First operand has 395 places, 532 transitions, 9821 flow. Second operand 13 states and 330 transitions. [2024-02-02 09:15:39,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 597 transitions, 11351 flow [2024-02-02 09:15:40,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 597 transitions, 10988 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-02-02 09:15:40,407 INFO L231 Difference]: Finished difference. Result has 398 places, 532 transitions, 9887 flow [2024-02-02 09:15:40,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9458, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9887, PETRI_PLACES=398, PETRI_TRANSITIONS=532} [2024-02-02 09:15:40,407 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 326 predicate places. [2024-02-02 09:15:40,407 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 532 transitions, 9887 flow [2024-02-02 09:15:40,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:40,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:40,408 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] [2024-02-02 09:15:40,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-02-02 09:15:40,409 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:40,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:40,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1356424227, now seen corresponding path program 5 times [2024-02-02 09:15:40,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:40,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479977531] [2024-02-02 09:15:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:40,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:40,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:40,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479977531] [2024-02-02 09:15:40,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479977531] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:40,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:40,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:40,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115432403] [2024-02-02 09:15:40,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:40,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:40,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:40,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:40,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:40,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:40,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 532 transitions, 9887 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:40,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:40,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:40,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:41,811 INFO L124 PetriNetUnfolderBase]: 2849/5220 cut-off events. [2024-02-02 09:15:41,811 INFO L125 PetriNetUnfolderBase]: For 122148/122961 co-relation queries the response was YES. [2024-02-02 09:15:41,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33847 conditions, 5220 events. 2849/5220 cut-off events. For 122148/122961 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 37313 event pairs, 545 based on Foata normal form. 98/5159 useless extension candidates. Maximal degree in co-relation 33724. Up to 3964 conditions per place. [2024-02-02 09:15:41,875 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 440 selfloop transitions, 89 changer transitions 0/558 dead transitions. [2024-02-02 09:15:41,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 558 transitions, 11132 flow [2024-02-02 09:15:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-02-02 09:15:41,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3907563025210084 [2024-02-02 09:15:41,876 INFO L175 Difference]: Start difference. First operand has 398 places, 532 transitions, 9887 flow. Second operand 7 states and 186 transitions. [2024-02-02 09:15:41,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 558 transitions, 11132 flow [2024-02-02 09:15:42,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 558 transitions, 10819 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-02 09:15:42,376 INFO L231 Difference]: Finished difference. Result has 396 places, 534 transitions, 9794 flow [2024-02-02 09:15:42,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9578, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9794, PETRI_PLACES=396, PETRI_TRANSITIONS=534} [2024-02-02 09:15:42,377 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 324 predicate places. [2024-02-02 09:15:42,377 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 534 transitions, 9794 flow [2024-02-02 09:15:42,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:42,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:42,377 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] [2024-02-02 09:15:42,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-02-02 09:15:42,377 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:42,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:42,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2126712429, now seen corresponding path program 6 times [2024-02-02 09:15:42,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:42,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849553769] [2024-02-02 09:15:42,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:42,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:42,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:42,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849553769] [2024-02-02 09:15:42,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849553769] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:42,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:42,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:42,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591096768] [2024-02-02 09:15:42,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:42,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:42,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:42,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:42,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 534 transitions, 9794 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:42,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:42,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:42,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:43,865 INFO L124 PetriNetUnfolderBase]: 2863/5234 cut-off events. [2024-02-02 09:15:43,866 INFO L125 PetriNetUnfolderBase]: For 121476/122287 co-relation queries the response was YES. [2024-02-02 09:15:43,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33619 conditions, 5234 events. 2863/5234 cut-off events. For 121476/122287 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 37371 event pairs, 674 based on Foata normal form. 76/5143 useless extension candidates. Maximal degree in co-relation 33495. Up to 4442 conditions per place. [2024-02-02 09:15:43,928 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 442 selfloop transitions, 79 changer transitions 0/550 dead transitions. [2024-02-02 09:15:43,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 550 transitions, 10897 flow [2024-02-02 09:15:43,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:43,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-02-02 09:15:43,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37815126050420167 [2024-02-02 09:15:43,929 INFO L175 Difference]: Start difference. First operand has 396 places, 534 transitions, 9794 flow. Second operand 7 states and 180 transitions. [2024-02-02 09:15:43,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 550 transitions, 10897 flow [2024-02-02 09:15:44,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 550 transitions, 10766 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:44,394 INFO L231 Difference]: Finished difference. Result has 399 places, 534 transitions, 9847 flow [2024-02-02 09:15:44,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9663, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9847, PETRI_PLACES=399, PETRI_TRANSITIONS=534} [2024-02-02 09:15:44,405 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 327 predicate places. [2024-02-02 09:15:44,406 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 534 transitions, 9847 flow [2024-02-02 09:15:44,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:44,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:44,406 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] [2024-02-02 09:15:44,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-02-02 09:15:44,406 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:44,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:44,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1716025619, now seen corresponding path program 7 times [2024-02-02 09:15:44,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:44,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735217889] [2024-02-02 09:15:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:44,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:44,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:44,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735217889] [2024-02-02 09:15:44,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735217889] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:44,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:44,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:44,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272405701] [2024-02-02 09:15:44,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:44,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:44,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:44,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:44,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:44,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:44,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 534 transitions, 9847 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:44,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:44,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:44,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:45,870 INFO L124 PetriNetUnfolderBase]: 2845/5208 cut-off events. [2024-02-02 09:15:45,870 INFO L125 PetriNetUnfolderBase]: For 120721/121532 co-relation queries the response was YES. [2024-02-02 09:15:45,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33386 conditions, 5208 events. 2845/5208 cut-off events. For 120721/121532 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 37165 event pairs, 555 based on Foata normal form. 78/5127 useless extension candidates. Maximal degree in co-relation 33262. Up to 3964 conditions per place. [2024-02-02 09:15:45,943 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 424 selfloop transitions, 101 changer transitions 0/554 dead transitions. [2024-02-02 09:15:45,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 554 transitions, 10996 flow [2024-02-02 09:15:45,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:45,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:45,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-02-02 09:15:45,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-02-02 09:15:45,944 INFO L175 Difference]: Start difference. First operand has 399 places, 534 transitions, 9847 flow. Second operand 7 states and 182 transitions. [2024-02-02 09:15:45,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 554 transitions, 10996 flow [2024-02-02 09:15:46,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 554 transitions, 10822 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-02 09:15:46,449 INFO L231 Difference]: Finished difference. Result has 399 places, 534 transitions, 9885 flow [2024-02-02 09:15:46,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9673, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9885, PETRI_PLACES=399, PETRI_TRANSITIONS=534} [2024-02-02 09:15:46,450 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 327 predicate places. [2024-02-02 09:15:46,450 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 534 transitions, 9885 flow [2024-02-02 09:15:46,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:46,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:46,450 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] [2024-02-02 09:15:46,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-02-02 09:15:46,452 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:46,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:46,452 INFO L85 PathProgramCache]: Analyzing trace with hash 431848347, now seen corresponding path program 8 times [2024-02-02 09:15:46,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:46,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634324666] [2024-02-02 09:15:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:46,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:46,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:46,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634324666] [2024-02-02 09:15:46,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634324666] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:46,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:46,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:46,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545331978] [2024-02-02 09:15:46,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:46,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:46,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:46,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:46,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:46,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:46,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 534 transitions, 9885 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:46,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:46,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:46,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:47,854 INFO L124 PetriNetUnfolderBase]: 2918/5306 cut-off events. [2024-02-02 09:15:47,854 INFO L125 PetriNetUnfolderBase]: For 127165/127941 co-relation queries the response was YES. [2024-02-02 09:15:47,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34377 conditions, 5306 events. 2918/5306 cut-off events. For 127165/127941 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 37778 event pairs, 522 based on Foata normal form. 111/5238 useless extension candidates. Maximal degree in co-relation 34254. Up to 4043 conditions per place. [2024-02-02 09:15:47,921 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 421 selfloop transitions, 106 changer transitions 0/556 dead transitions. [2024-02-02 09:15:47,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 556 transitions, 11077 flow [2024-02-02 09:15:47,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-02-02 09:15:47,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802521008403361 [2024-02-02 09:15:47,922 INFO L175 Difference]: Start difference. First operand has 399 places, 534 transitions, 9885 flow. Second operand 7 states and 181 transitions. [2024-02-02 09:15:47,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 556 transitions, 11077 flow [2024-02-02 09:15:48,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 556 transitions, 10834 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-02-02 09:15:48,421 INFO L231 Difference]: Finished difference. Result has 399 places, 539 transitions, 9971 flow [2024-02-02 09:15:48,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9653, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9971, PETRI_PLACES=399, PETRI_TRANSITIONS=539} [2024-02-02 09:15:48,422 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 327 predicate places. [2024-02-02 09:15:48,422 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 539 transitions, 9971 flow [2024-02-02 09:15:48,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:48,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:48,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:48,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-02-02 09:15:48,423 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:48,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:48,423 INFO L85 PathProgramCache]: Analyzing trace with hash 432917847, now seen corresponding path program 9 times [2024-02-02 09:15:48,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:48,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555676753] [2024-02-02 09:15:48,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:48,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:48,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:48,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555676753] [2024-02-02 09:15:48,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555676753] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:48,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:48,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:48,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110393216] [2024-02-02 09:15:48,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:48,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:48,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:48,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:48,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:48,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:48,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 539 transitions, 9971 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:48,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:48,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:48,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:49,827 INFO L124 PetriNetUnfolderBase]: 2928/5336 cut-off events. [2024-02-02 09:15:49,827 INFO L125 PetriNetUnfolderBase]: For 127045/127824 co-relation queries the response was YES. [2024-02-02 09:15:49,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34774 conditions, 5336 events. 2928/5336 cut-off events. For 127045/127824 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 38134 event pairs, 524 based on Foata normal form. 111/5268 useless extension candidates. Maximal degree in co-relation 34651. Up to 4059 conditions per place. [2024-02-02 09:15:49,895 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 418 selfloop transitions, 113 changer transitions 0/560 dead transitions. [2024-02-02 09:15:49,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 560 transitions, 11164 flow [2024-02-02 09:15:49,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:49,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:49,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-02-02 09:15:49,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802521008403361 [2024-02-02 09:15:49,897 INFO L175 Difference]: Start difference. First operand has 399 places, 539 transitions, 9971 flow. Second operand 7 states and 181 transitions. [2024-02-02 09:15:49,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 560 transitions, 11164 flow [2024-02-02 09:15:50,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 560 transitions, 10965 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:50,396 INFO L231 Difference]: Finished difference. Result has 401 places, 543 transitions, 10056 flow [2024-02-02 09:15:50,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9791, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10056, PETRI_PLACES=401, PETRI_TRANSITIONS=543} [2024-02-02 09:15:50,397 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 329 predicate places. [2024-02-02 09:15:50,397 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 543 transitions, 10056 flow [2024-02-02 09:15:50,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:50,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:50,397 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] [2024-02-02 09:15:50,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-02-02 09:15:50,398 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:50,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:50,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1465175997, now seen corresponding path program 10 times [2024-02-02 09:15:50,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:50,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788580370] [2024-02-02 09:15:50,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:50,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:50,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:50,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788580370] [2024-02-02 09:15:50,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788580370] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:50,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:50,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:50,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429068871] [2024-02-02 09:15:50,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:50,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:50,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:50,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:50,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:50,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:50,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 543 transitions, 10056 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:50,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:50,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:50,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:51,809 INFO L124 PetriNetUnfolderBase]: 2932/5348 cut-off events. [2024-02-02 09:15:51,809 INFO L125 PetriNetUnfolderBase]: For 128964/129740 co-relation queries the response was YES. [2024-02-02 09:15:51,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34581 conditions, 5348 events. 2932/5348 cut-off events. For 128964/129740 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 38280 event pairs, 542 based on Foata normal form. 85/5254 useless extension candidates. Maximal degree in co-relation 34460. Up to 4071 conditions per place. [2024-02-02 09:15:51,886 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 407 selfloop transitions, 125 changer transitions 0/561 dead transitions. [2024-02-02 09:15:51,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 561 transitions, 11199 flow [2024-02-02 09:15:51,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:51,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-02-02 09:15:51,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3739495798319328 [2024-02-02 09:15:51,888 INFO L175 Difference]: Start difference. First operand has 401 places, 543 transitions, 10056 flow. Second operand 7 states and 178 transitions. [2024-02-02 09:15:51,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 561 transitions, 11199 flow [2024-02-02 09:15:52,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 561 transitions, 10910 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-02-02 09:15:52,388 INFO L231 Difference]: Finished difference. Result has 396 places, 546 transitions, 10096 flow [2024-02-02 09:15:52,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9755, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10096, PETRI_PLACES=396, PETRI_TRANSITIONS=546} [2024-02-02 09:15:52,388 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 324 predicate places. [2024-02-02 09:15:52,388 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 546 transitions, 10096 flow [2024-02-02 09:15:52,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:52,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:52,389 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] [2024-02-02 09:15:52,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-02-02 09:15:52,389 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:52,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:52,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1902409735, now seen corresponding path program 11 times [2024-02-02 09:15:52,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:52,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743511067] [2024-02-02 09:15:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:52,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:52,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:52,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743511067] [2024-02-02 09:15:52,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743511067] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:52,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:52,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:52,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764711649] [2024-02-02 09:15:52,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:52,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:52,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:52,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:52,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:52,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:52,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 546 transitions, 10096 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:52,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:52,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:52,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:54,003 INFO L124 PetriNetUnfolderBase]: 2872/5287 cut-off events. [2024-02-02 09:15:54,003 INFO L125 PetriNetUnfolderBase]: For 123955/124769 co-relation queries the response was YES. [2024-02-02 09:15:54,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33658 conditions, 5287 events. 2872/5287 cut-off events. For 123955/124769 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 37953 event pairs, 451 based on Foata normal form. 82/5229 useless extension candidates. Maximal degree in co-relation 33544. Up to 2750 conditions per place. [2024-02-02 09:15:54,057 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 376 selfloop transitions, 194 changer transitions 0/599 dead transitions. [2024-02-02 09:15:54,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 599 transitions, 11664 flow [2024-02-02 09:15:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:15:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:15:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-02-02 09:15:54,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941176470588235 [2024-02-02 09:15:54,058 INFO L175 Difference]: Start difference. First operand has 396 places, 546 transitions, 10096 flow. Second operand 10 states and 268 transitions. [2024-02-02 09:15:54,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 599 transitions, 11664 flow [2024-02-02 09:15:54,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 599 transitions, 11424 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:54,515 INFO L231 Difference]: Finished difference. Result has 401 places, 546 transitions, 10294 flow [2024-02-02 09:15:54,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9860, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10294, PETRI_PLACES=401, PETRI_TRANSITIONS=546} [2024-02-02 09:15:54,516 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 329 predicate places. [2024-02-02 09:15:54,516 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 546 transitions, 10294 flow [2024-02-02 09:15:54,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:54,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:54,517 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] [2024-02-02 09:15:54,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-02-02 09:15:54,517 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:54,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:54,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2031285351, now seen corresponding path program 12 times [2024-02-02 09:15:54,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:54,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856465372] [2024-02-02 09:15:54,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:54,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:54,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:54,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856465372] [2024-02-02 09:15:54,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856465372] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:54,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:54,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:54,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484217079] [2024-02-02 09:15:54,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:54,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:54,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:54,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:54,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:54,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:54,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 546 transitions, 10294 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:54,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:54,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:54,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:56,022 INFO L124 PetriNetUnfolderBase]: 2860/5267 cut-off events. [2024-02-02 09:15:56,022 INFO L125 PetriNetUnfolderBase]: For 129879/130696 co-relation queries the response was YES. [2024-02-02 09:15:56,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34005 conditions, 5267 events. 2860/5267 cut-off events. For 129879/130696 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 37798 event pairs, 483 based on Foata normal form. 82/5209 useless extension candidates. Maximal degree in co-relation 33891. Up to 2746 conditions per place. [2024-02-02 09:15:56,091 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 377 selfloop transitions, 194 changer transitions 0/600 dead transitions. [2024-02-02 09:15:56,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 600 transitions, 11806 flow [2024-02-02 09:15:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:15:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:15:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 287 transitions. [2024-02-02 09:15:56,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3836898395721925 [2024-02-02 09:15:56,093 INFO L175 Difference]: Start difference. First operand has 401 places, 546 transitions, 10294 flow. Second operand 11 states and 287 transitions. [2024-02-02 09:15:56,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 600 transitions, 11806 flow [2024-02-02 09:15:56,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 600 transitions, 11382 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-02-02 09:15:56,585 INFO L231 Difference]: Finished difference. Result has 402 places, 546 transitions, 10304 flow [2024-02-02 09:15:56,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9882, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10304, PETRI_PLACES=402, PETRI_TRANSITIONS=546} [2024-02-02 09:15:56,585 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 330 predicate places. [2024-02-02 09:15:56,586 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 546 transitions, 10304 flow [2024-02-02 09:15:56,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:56,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:56,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:56,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-02-02 09:15:56,586 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:56,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:56,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1901489035, now seen corresponding path program 13 times [2024-02-02 09:15:56,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:56,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464713365] [2024-02-02 09:15:56,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:56,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:56,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:56,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464713365] [2024-02-02 09:15:56,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464713365] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:56,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:56,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:56,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733210235] [2024-02-02 09:15:56,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:56,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:56,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:56,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:56,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:56,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:56,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 546 transitions, 10304 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:56,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:56,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:56,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:58,098 INFO L124 PetriNetUnfolderBase]: 2844/5240 cut-off events. [2024-02-02 09:15:58,098 INFO L125 PetriNetUnfolderBase]: For 128416/129228 co-relation queries the response was YES. [2024-02-02 09:15:58,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33651 conditions, 5240 events. 2844/5240 cut-off events. For 128416/129228 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 37613 event pairs, 444 based on Foata normal form. 86/5185 useless extension candidates. Maximal degree in co-relation 33537. Up to 2740 conditions per place. [2024-02-02 09:15:58,152 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 355 selfloop transitions, 206 changer transitions 0/590 dead transitions. [2024-02-02 09:15:58,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 590 transitions, 11640 flow [2024-02-02 09:15:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:15:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:15:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-02-02 09:15:58,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38823529411764707 [2024-02-02 09:15:58,153 INFO L175 Difference]: Start difference. First operand has 402 places, 546 transitions, 10304 flow. Second operand 10 states and 264 transitions. [2024-02-02 09:15:58,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 590 transitions, 11640 flow [2024-02-02 09:15:58,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 590 transitions, 11220 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-02-02 09:15:58,556 INFO L231 Difference]: Finished difference. Result has 400 places, 546 transitions, 10324 flow [2024-02-02 09:15:58,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9884, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10324, PETRI_PLACES=400, PETRI_TRANSITIONS=546} [2024-02-02 09:15:58,557 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 328 predicate places. [2024-02-02 09:15:58,557 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 546 transitions, 10324 flow [2024-02-02 09:15:58,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:58,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:58,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:58,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-02-02 09:15:58,557 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:58,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:58,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1291576191, now seen corresponding path program 14 times [2024-02-02 09:15:58,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:58,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663352863] [2024-02-02 09:15:58,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:58,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:58,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:58,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663352863] [2024-02-02 09:15:58,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663352863] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:58,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:58,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:15:58,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758408190] [2024-02-02 09:15:58,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:58,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:15:58,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:58,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:15:58,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:15:58,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:58,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 546 transitions, 10324 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:58,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:58,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:58,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:00,074 INFO L124 PetriNetUnfolderBase]: 2960/5443 cut-off events. [2024-02-02 09:16:00,074 INFO L125 PetriNetUnfolderBase]: For 129141/129982 co-relation queries the response was YES. [2024-02-02 09:16:00,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34624 conditions, 5443 events. 2960/5443 cut-off events. For 129141/129982 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 39311 event pairs, 328 based on Foata normal form. 98/5400 useless extension candidates. Maximal degree in co-relation 34511. Up to 1676 conditions per place. [2024-02-02 09:16:00,142 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 329 selfloop transitions, 263 changer transitions 0/621 dead transitions. [2024-02-02 09:16:00,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 621 transitions, 12144 flow [2024-02-02 09:16:00,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:16:00,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:16:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 298 transitions. [2024-02-02 09:16:00,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983957219251337 [2024-02-02 09:16:00,144 INFO L175 Difference]: Start difference. First operand has 400 places, 546 transitions, 10324 flow. Second operand 11 states and 298 transitions. [2024-02-02 09:16:00,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 621 transitions, 12144 flow [2024-02-02 09:16:00,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 621 transitions, 11692 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-02-02 09:16:00,628 INFO L231 Difference]: Finished difference. Result has 401 places, 555 transitions, 10567 flow [2024-02-02 09:16:00,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9888, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10567, PETRI_PLACES=401, PETRI_TRANSITIONS=555} [2024-02-02 09:16:00,629 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 329 predicate places. [2024-02-02 09:16:00,629 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 555 transitions, 10567 flow [2024-02-02 09:16:00,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:00,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:00,632 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] [2024-02-02 09:16:00,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-02-02 09:16:00,632 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:00,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:00,633 INFO L85 PathProgramCache]: Analyzing trace with hash -2036174741, now seen corresponding path program 15 times [2024-02-02 09:16:00,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:00,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30321977] [2024-02-02 09:16:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:00,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:00,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:00,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30321977] [2024-02-02 09:16:00,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30321977] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:00,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:00,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:16:00,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303997069] [2024-02-02 09:16:00,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:00,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:16:00,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:00,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:16:00,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:16:00,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:00,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 555 transitions, 10567 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:00,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:00,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:00,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:02,120 INFO L124 PetriNetUnfolderBase]: 3094/5646 cut-off events. [2024-02-02 09:16:02,120 INFO L125 PetriNetUnfolderBase]: For 137452/138315 co-relation queries the response was YES. [2024-02-02 09:16:02,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36414 conditions, 5646 events. 3094/5646 cut-off events. For 137452/138315 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 40664 event pairs, 282 based on Foata normal form. 113/5599 useless extension candidates. Maximal degree in co-relation 36301. Up to 1740 conditions per place. [2024-02-02 09:16:02,188 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 313 selfloop transitions, 298 changer transitions 0/640 dead transitions. [2024-02-02 09:16:02,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 640 transitions, 12670 flow [2024-02-02 09:16:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:16:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:16:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 316 transitions. [2024-02-02 09:16:02,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872549019607843 [2024-02-02 09:16:02,189 INFO L175 Difference]: Start difference. First operand has 401 places, 555 transitions, 10567 flow. Second operand 12 states and 316 transitions. [2024-02-02 09:16:02,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 640 transitions, 12670 flow [2024-02-02 09:16:02,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 640 transitions, 12214 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 09:16:02,707 INFO L231 Difference]: Finished difference. Result has 407 places, 578 transitions, 11147 flow [2024-02-02 09:16:02,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10141, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11147, PETRI_PLACES=407, PETRI_TRANSITIONS=578} [2024-02-02 09:16:02,708 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 335 predicate places. [2024-02-02 09:16:02,708 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 578 transitions, 11147 flow [2024-02-02 09:16:02,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:02,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:02,708 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] [2024-02-02 09:16:02,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-02-02 09:16:02,709 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:02,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:02,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2128668103, now seen corresponding path program 16 times [2024-02-02 09:16:02,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:02,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217760311] [2024-02-02 09:16:02,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:02,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:02,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:02,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217760311] [2024-02-02 09:16:02,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217760311] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:02,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:02,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:16:02,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970645810] [2024-02-02 09:16:02,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:02,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:16:02,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:02,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:16:02,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:16:03,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:03,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 578 transitions, 11147 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:03,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:03,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:03,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:04,503 INFO L124 PetriNetUnfolderBase]: 3020/5559 cut-off events. [2024-02-02 09:16:04,504 INFO L125 PetriNetUnfolderBase]: For 137333/138255 co-relation queries the response was YES. [2024-02-02 09:16:04,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37040 conditions, 5559 events. 3020/5559 cut-off events. For 137333/138255 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 40357 event pairs, 348 based on Foata normal form. 98/5516 useless extension candidates. Maximal degree in co-relation 36925. Up to 1704 conditions per place. [2024-02-02 09:16:04,558 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 342 selfloop transitions, 278 changer transitions 0/649 dead transitions. [2024-02-02 09:16:04,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 649 transitions, 12973 flow [2024-02-02 09:16:04,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 09:16:04,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 09:16:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 343 transitions. [2024-02-02 09:16:04,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38800904977375567 [2024-02-02 09:16:04,559 INFO L175 Difference]: Start difference. First operand has 407 places, 578 transitions, 11147 flow. Second operand 13 states and 343 transitions. [2024-02-02 09:16:04,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 649 transitions, 12973 flow [2024-02-02 09:16:05,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 649 transitions, 12453 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-02-02 09:16:05,029 INFO L231 Difference]: Finished difference. Result has 410 places, 578 transitions, 11211 flow [2024-02-02 09:16:05,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10643, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11211, PETRI_PLACES=410, PETRI_TRANSITIONS=578} [2024-02-02 09:16:05,029 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 338 predicate places. [2024-02-02 09:16:05,030 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 578 transitions, 11211 flow [2024-02-02 09:16:05,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:05,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:05,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:05,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-02-02 09:16:05,030 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:05,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:05,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2010229601, now seen corresponding path program 17 times [2024-02-02 09:16:05,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:05,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136148267] [2024-02-02 09:16:05,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:05,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:05,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:05,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136148267] [2024-02-02 09:16:05,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136148267] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:05,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:05,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:16:05,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387891611] [2024-02-02 09:16:05,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:05,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:16:05,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:05,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:16:05,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:16:05,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:05,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 578 transitions, 11211 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:05,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:05,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:05,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:06,946 INFO L124 PetriNetUnfolderBase]: 3070/5606 cut-off events. [2024-02-02 09:16:06,947 INFO L125 PetriNetUnfolderBase]: For 145423/146310 co-relation queries the response was YES. [2024-02-02 09:16:07,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37668 conditions, 5606 events. 3070/5606 cut-off events. For 145423/146310 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 40356 event pairs, 282 based on Foata normal form. 113/5559 useless extension candidates. Maximal degree in co-relation 37553. Up to 1732 conditions per place. [2024-02-02 09:16:07,025 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 321 selfloop transitions, 298 changer transitions 0/648 dead transitions. [2024-02-02 09:16:07,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 648 transitions, 13045 flow [2024-02-02 09:16:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-02 09:16:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-02 09:16:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 361 transitions. [2024-02-02 09:16:07,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3792016806722689 [2024-02-02 09:16:07,026 INFO L175 Difference]: Start difference. First operand has 410 places, 578 transitions, 11211 flow. Second operand 14 states and 361 transitions. [2024-02-02 09:16:07,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 648 transitions, 13045 flow [2024-02-02 09:16:07,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 648 transitions, 12542 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-02-02 09:16:07,574 INFO L231 Difference]: Finished difference. Result has 415 places, 578 transitions, 11324 flow [2024-02-02 09:16:07,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10712, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11324, PETRI_PLACES=415, PETRI_TRANSITIONS=578} [2024-02-02 09:16:07,575 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 343 predicate places. [2024-02-02 09:16:07,575 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 578 transitions, 11324 flow [2024-02-02 09:16:07,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:07,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:07,576 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] [2024-02-02 09:16:07,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-02-02 09:16:07,576 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:07,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:07,576 INFO L85 PathProgramCache]: Analyzing trace with hash -637566049, now seen corresponding path program 18 times [2024-02-02 09:16:07,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:07,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183664200] [2024-02-02 09:16:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:07,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:07,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:07,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183664200] [2024-02-02 09:16:07,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183664200] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:07,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:07,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:16:07,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197714024] [2024-02-02 09:16:07,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:07,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:16:07,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:07,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:16:07,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:16:07,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:07,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 578 transitions, 11324 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:07,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:07,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:07,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:09,321 INFO L124 PetriNetUnfolderBase]: 2996/5519 cut-off events. [2024-02-02 09:16:09,322 INFO L125 PetriNetUnfolderBase]: For 140648/141571 co-relation queries the response was YES. [2024-02-02 09:16:09,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36958 conditions, 5519 events. 2996/5519 cut-off events. For 140648/141571 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 40081 event pairs, 308 based on Foata normal form. 78/5456 useless extension candidates. Maximal degree in co-relation 36843. Up to 1696 conditions per place. [2024-02-02 09:16:09,397 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 296 selfloop transitions, 312 changer transitions 0/637 dead transitions. [2024-02-02 09:16:09,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 637 transitions, 12977 flow [2024-02-02 09:16:09,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:16:09,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:16:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 313 transitions. [2024-02-02 09:16:09,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38357843137254904 [2024-02-02 09:16:09,398 INFO L175 Difference]: Start difference. First operand has 415 places, 578 transitions, 11324 flow. Second operand 12 states and 313 transitions. [2024-02-02 09:16:09,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 637 transitions, 12977 flow [2024-02-02 09:16:09,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 637 transitions, 12391 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-02-02 09:16:09,877 INFO L231 Difference]: Finished difference. Result has 414 places, 578 transitions, 11378 flow [2024-02-02 09:16:09,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10744, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11378, PETRI_PLACES=414, PETRI_TRANSITIONS=578} [2024-02-02 09:16:09,878 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 342 predicate places. [2024-02-02 09:16:09,878 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 578 transitions, 11378 flow [2024-02-02 09:16:09,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:09,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:09,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:09,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-02-02 09:16:09,878 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:09,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1845477153, now seen corresponding path program 19 times [2024-02-02 09:16:09,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:09,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811711939] [2024-02-02 09:16:09,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:09,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:10,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:10,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811711939] [2024-02-02 09:16:10,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811711939] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:10,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:10,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:16:10,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402418293] [2024-02-02 09:16:10,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:10,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:16:10,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:10,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:16:10,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:16:10,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:10,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 578 transitions, 11378 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:10,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:10,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:10,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:11,584 INFO L124 PetriNetUnfolderBase]: 3246/5948 cut-off events. [2024-02-02 09:16:11,584 INFO L125 PetriNetUnfolderBase]: For 156949/157836 co-relation queries the response was YES. [2024-02-02 09:16:11,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39690 conditions, 5948 events. 3246/5948 cut-off events. For 156949/157836 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 43299 event pairs, 264 based on Foata normal form. 113/5907 useless extension candidates. Maximal degree in co-relation 39575. Up to 1800 conditions per place. [2024-02-02 09:16:11,658 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 288 selfloop transitions, 345 changer transitions 0/662 dead transitions. [2024-02-02 09:16:11,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 662 transitions, 13622 flow [2024-02-02 09:16:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 09:16:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 09:16:11,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 335 transitions. [2024-02-02 09:16:11,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37895927601809953 [2024-02-02 09:16:11,659 INFO L175 Difference]: Start difference. First operand has 414 places, 578 transitions, 11378 flow. Second operand 13 states and 335 transitions. [2024-02-02 09:16:11,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 662 transitions, 13622 flow [2024-02-02 09:16:12,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 662 transitions, 13163 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-02-02 09:16:12,207 INFO L231 Difference]: Finished difference. Result has 419 places, 606 transitions, 12336 flow [2024-02-02 09:16:12,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10939, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12336, PETRI_PLACES=419, PETRI_TRANSITIONS=606} [2024-02-02 09:16:12,208 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 347 predicate places. [2024-02-02 09:16:12,208 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 606 transitions, 12336 flow [2024-02-02 09:16:12,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:12,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:12,208 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] [2024-02-02 09:16:12,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-02-02 09:16:12,208 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:12,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:12,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1982840379, now seen corresponding path program 20 times [2024-02-02 09:16:12,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:12,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699416095] [2024-02-02 09:16:12,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:12,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:12,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:12,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:12,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699416095] [2024-02-02 09:16:12,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699416095] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:12,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:12,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:16:12,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186540817] [2024-02-02 09:16:12,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:12,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:16:12,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:12,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:16:12,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:16:12,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:12,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 606 transitions, 12336 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:12,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:12,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:12,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:13,855 INFO L124 PetriNetUnfolderBase]: 3378/6141 cut-off events. [2024-02-02 09:16:13,856 INFO L125 PetriNetUnfolderBase]: For 169573/170455 co-relation queries the response was YES. [2024-02-02 09:16:13,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41819 conditions, 6141 events. 3378/6141 cut-off events. For 169573/170455 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 44726 event pairs, 283 based on Foata normal form. 87/6068 useless extension candidates. Maximal degree in co-relation 41703. Up to 1844 conditions per place. [2024-02-02 09:16:13,935 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 283 selfloop transitions, 358 changer transitions 0/670 dead transitions. [2024-02-02 09:16:13,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 670 transitions, 14136 flow [2024-02-02 09:16:13,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 09:16:13,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 09:16:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 329 transitions. [2024-02-02 09:16:13,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721719457013575 [2024-02-02 09:16:13,937 INFO L175 Difference]: Start difference. First operand has 419 places, 606 transitions, 12336 flow. Second operand 13 states and 329 transitions. [2024-02-02 09:16:13,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 670 transitions, 14136 flow [2024-02-02 09:16:14,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 670 transitions, 13682 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-02-02 09:16:14,506 INFO L231 Difference]: Finished difference. Result has 425 places, 620 transitions, 12904 flow [2024-02-02 09:16:14,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=11892, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12904, PETRI_PLACES=425, PETRI_TRANSITIONS=620} [2024-02-02 09:16:14,521 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 353 predicate places. [2024-02-02 09:16:14,521 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 620 transitions, 12904 flow [2024-02-02 09:16:14,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:14,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:14,521 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] [2024-02-02 09:16:14,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-02-02 09:16:14,521 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:14,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:14,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1104584760, now seen corresponding path program 1 times [2024-02-02 09:16:14,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:14,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323710505] [2024-02-02 09:16:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:14,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:14,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:14,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323710505] [2024-02-02 09:16:14,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323710505] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:14,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:14,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:14,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594513538] [2024-02-02 09:16:14,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:14,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:14,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:14,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:14,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:14,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 620 transitions, 12904 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:14,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:14,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:14,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:16,417 INFO L124 PetriNetUnfolderBase]: 3344/6331 cut-off events. [2024-02-02 09:16:16,417 INFO L125 PetriNetUnfolderBase]: For 184103/184711 co-relation queries the response was YES. [2024-02-02 09:16:16,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44523 conditions, 6331 events. 3344/6331 cut-off events. For 184103/184711 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 48346 event pairs, 583 based on Foata normal form. 73/6244 useless extension candidates. Maximal degree in co-relation 44405. Up to 1930 conditions per place. [2024-02-02 09:16:16,487 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 491 selfloop transitions, 149 changer transitions 17/686 dead transitions. [2024-02-02 09:16:16,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 686 transitions, 14956 flow [2024-02-02 09:16:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:16:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:16:16,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 296 transitions. [2024-02-02 09:16:16,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39572192513368987 [2024-02-02 09:16:16,488 INFO L175 Difference]: Start difference. First operand has 425 places, 620 transitions, 12904 flow. Second operand 11 states and 296 transitions. [2024-02-02 09:16:16,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 686 transitions, 14956 flow [2024-02-02 09:16:17,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 686 transitions, 14327 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-02-02 09:16:17,112 INFO L231 Difference]: Finished difference. Result has 429 places, 605 transitions, 12465 flow [2024-02-02 09:16:17,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12327, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12465, PETRI_PLACES=429, PETRI_TRANSITIONS=605} [2024-02-02 09:16:17,113 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 357 predicate places. [2024-02-02 09:16:17,113 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 605 transitions, 12465 flow [2024-02-02 09:16:17,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:17,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:17,114 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] [2024-02-02 09:16:17,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-02-02 09:16:17,114 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:17,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:17,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2051730350, now seen corresponding path program 1 times [2024-02-02 09:16:17,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:17,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159442819] [2024-02-02 09:16:17,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:17,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:17,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:17,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159442819] [2024-02-02 09:16:17,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159442819] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:17,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:17,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:17,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588040036] [2024-02-02 09:16:17,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:17,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:17,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:17,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:17,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:17,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:17,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 605 transitions, 12465 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:17,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:17,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:17,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:18,975 INFO L124 PetriNetUnfolderBase]: 3425/6553 cut-off events. [2024-02-02 09:16:18,975 INFO L125 PetriNetUnfolderBase]: For 188360/189351 co-relation queries the response was YES. [2024-02-02 09:16:19,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44461 conditions, 6553 events. 3425/6553 cut-off events. For 188360/189351 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 50978 event pairs, 751 based on Foata normal form. 120/6546 useless extension candidates. Maximal degree in co-relation 44342. Up to 2612 conditions per place. [2024-02-02 09:16:19,166 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 556 selfloop transitions, 119 changer transitions 4/708 dead transitions. [2024-02-02 09:16:19,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 708 transitions, 14893 flow [2024-02-02 09:16:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:16:19,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:16:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 303 transitions. [2024-02-02 09:16:19,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050802139037433 [2024-02-02 09:16:19,168 INFO L175 Difference]: Start difference. First operand has 429 places, 605 transitions, 12465 flow. Second operand 11 states and 303 transitions. [2024-02-02 09:16:19,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 708 transitions, 14893 flow [2024-02-02 09:16:19,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 708 transitions, 14624 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-02-02 09:16:19,730 INFO L231 Difference]: Finished difference. Result has 435 places, 607 transitions, 12505 flow [2024-02-02 09:16:19,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12207, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12505, PETRI_PLACES=435, PETRI_TRANSITIONS=607} [2024-02-02 09:16:19,730 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 363 predicate places. [2024-02-02 09:16:19,730 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 607 transitions, 12505 flow [2024-02-02 09:16:19,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:19,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:19,731 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] [2024-02-02 09:16:19,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-02-02 09:16:19,731 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:19,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:19,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1308869886, now seen corresponding path program 2 times [2024-02-02 09:16:19,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:19,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053629715] [2024-02-02 09:16:19,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:19,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:19,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:19,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053629715] [2024-02-02 09:16:19,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053629715] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:19,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:19,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:19,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306248845] [2024-02-02 09:16:19,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:19,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:19,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:19,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:19,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:20,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:20,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 607 transitions, 12505 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:20,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:20,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:20,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:21,643 INFO L124 PetriNetUnfolderBase]: 3451/6790 cut-off events. [2024-02-02 09:16:21,643 INFO L125 PetriNetUnfolderBase]: For 197566/198232 co-relation queries the response was YES. [2024-02-02 09:16:21,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46891 conditions, 6790 events. 3451/6790 cut-off events. For 197566/198232 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 54228 event pairs, 538 based on Foata normal form. 83/6704 useless extension candidates. Maximal degree in co-relation 46770. Up to 2814 conditions per place. [2024-02-02 09:16:21,731 INFO L140 encePairwiseOnDemand]: 51/68 looper letters, 492 selfloop transitions, 156 changer transitions 4/681 dead transitions. [2024-02-02 09:16:21,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 681 transitions, 14620 flow [2024-02-02 09:16:21,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:16:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:16:21,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 309 transitions. [2024-02-02 09:16:21,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41310160427807485 [2024-02-02 09:16:21,733 INFO L175 Difference]: Start difference. First operand has 435 places, 607 transitions, 12505 flow. Second operand 11 states and 309 transitions. [2024-02-02 09:16:21,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 681 transitions, 14620 flow [2024-02-02 09:16:22,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 681 transitions, 14444 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-02-02 09:16:22,534 INFO L231 Difference]: Finished difference. Result has 441 places, 606 transitions, 12705 flow [2024-02-02 09:16:22,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12329, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12705, PETRI_PLACES=441, PETRI_TRANSITIONS=606} [2024-02-02 09:16:22,534 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 369 predicate places. [2024-02-02 09:16:22,534 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 606 transitions, 12705 flow [2024-02-02 09:16:22,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:22,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:22,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:22,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-02-02 09:16:22,535 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:22,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:22,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2096862284, now seen corresponding path program 3 times [2024-02-02 09:16:22,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:22,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279661233] [2024-02-02 09:16:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:22,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:22,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279661233] [2024-02-02 09:16:22,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279661233] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:22,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:22,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:22,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380645040] [2024-02-02 09:16:22,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:22,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:22,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:22,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:22,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:22,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:22,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 606 transitions, 12705 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:22,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:22,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:22,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:24,519 INFO L124 PetriNetUnfolderBase]: 3446/6807 cut-off events. [2024-02-02 09:16:24,519 INFO L125 PetriNetUnfolderBase]: For 203423/204107 co-relation queries the response was YES. [2024-02-02 09:16:24,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48291 conditions, 6807 events. 3446/6807 cut-off events. For 203423/204107 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 54535 event pairs, 547 based on Foata normal form. 75/6713 useless extension candidates. Maximal degree in co-relation 48167. Up to 2814 conditions per place. [2024-02-02 09:16:24,610 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 498 selfloop transitions, 154 changer transitions 7/688 dead transitions. [2024-02-02 09:16:24,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 688 transitions, 14900 flow [2024-02-02 09:16:24,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 09:16:24,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 09:16:24,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 355 transitions. [2024-02-02 09:16:24,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40158371040723984 [2024-02-02 09:16:24,612 INFO L175 Difference]: Start difference. First operand has 441 places, 606 transitions, 12705 flow. Second operand 13 states and 355 transitions. [2024-02-02 09:16:24,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 688 transitions, 14900 flow [2024-02-02 09:16:25,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 688 transitions, 14667 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-02-02 09:16:25,469 INFO L231 Difference]: Finished difference. Result has 446 places, 599 transitions, 12728 flow [2024-02-02 09:16:25,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12480, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12728, PETRI_PLACES=446, PETRI_TRANSITIONS=599} [2024-02-02 09:16:25,470 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 374 predicate places. [2024-02-02 09:16:25,470 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 599 transitions, 12728 flow [2024-02-02 09:16:25,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:25,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:25,471 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] [2024-02-02 09:16:25,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-02-02 09:16:25,471 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:25,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:25,471 INFO L85 PathProgramCache]: Analyzing trace with hash 648421516, now seen corresponding path program 4 times [2024-02-02 09:16:25,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:25,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267813394] [2024-02-02 09:16:25,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:25,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:25,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:25,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267813394] [2024-02-02 09:16:25,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267813394] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:25,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:25,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:25,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063234494] [2024-02-02 09:16:25,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:25,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:25,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:25,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:25,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:25,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:25,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 599 transitions, 12728 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:25,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:25,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:25,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:27,497 INFO L124 PetriNetUnfolderBase]: 3464/6942 cut-off events. [2024-02-02 09:16:27,498 INFO L125 PetriNetUnfolderBase]: For 209006/209690 co-relation queries the response was YES. [2024-02-02 09:16:27,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49588 conditions, 6942 events. 3464/6942 cut-off events. For 209006/209690 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 56364 event pairs, 555 based on Foata normal form. 75/6854 useless extension candidates. Maximal degree in co-relation 49464. Up to 2096 conditions per place. [2024-02-02 09:16:27,588 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 436 selfloop transitions, 198 changer transitions 8/671 dead transitions. [2024-02-02 09:16:27,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 671 transitions, 14800 flow [2024-02-02 09:16:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:16:27,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:16:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 329 transitions. [2024-02-02 09:16:27,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40318627450980393 [2024-02-02 09:16:27,589 INFO L175 Difference]: Start difference. First operand has 446 places, 599 transitions, 12728 flow. Second operand 12 states and 329 transitions. [2024-02-02 09:16:27,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 671 transitions, 14800 flow [2024-02-02 09:16:28,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 671 transitions, 14514 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-02-02 09:16:28,448 INFO L231 Difference]: Finished difference. Result has 447 places, 592 transitions, 12852 flow [2024-02-02 09:16:28,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12450, PETRI_DIFFERENCE_MINUEND_PLACES=434, 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=12, PETRI_FLOW=12852, PETRI_PLACES=447, PETRI_TRANSITIONS=592} [2024-02-02 09:16:28,448 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 375 predicate places. [2024-02-02 09:16:28,448 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 592 transitions, 12852 flow [2024-02-02 09:16:28,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:28,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:28,449 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] [2024-02-02 09:16:28,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-02-02 09:16:28,449 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:28,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:28,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1898469774, now seen corresponding path program 5 times [2024-02-02 09:16:28,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:28,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387939930] [2024-02-02 09:16:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:28,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:28,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:28,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387939930] [2024-02-02 09:16:28,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387939930] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:28,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:28,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:28,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401079869] [2024-02-02 09:16:28,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:28,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:28,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:28,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:28,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:28,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:28,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 592 transitions, 12852 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:28,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:28,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:28,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:30,661 INFO L124 PetriNetUnfolderBase]: 3466/6945 cut-off events. [2024-02-02 09:16:30,661 INFO L125 PetriNetUnfolderBase]: For 212589/213273 co-relation queries the response was YES. [2024-02-02 09:16:30,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50628 conditions, 6945 events. 3466/6945 cut-off events. For 212589/213273 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 56399 event pairs, 542 based on Foata normal form. 75/6851 useless extension candidates. Maximal degree in co-relation 50504. Up to 2237 conditions per place. [2024-02-02 09:16:30,746 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 419 selfloop transitions, 200 changer transitions 13/661 dead transitions. [2024-02-02 09:16:30,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 661 transitions, 14821 flow [2024-02-02 09:16:30,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:16:30,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:16:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 322 transitions. [2024-02-02 09:16:30,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946078431372549 [2024-02-02 09:16:30,747 INFO L175 Difference]: Start difference. First operand has 447 places, 592 transitions, 12852 flow. Second operand 12 states and 322 transitions. [2024-02-02 09:16:30,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 661 transitions, 14821 flow [2024-02-02 09:16:31,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 661 transitions, 14483 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-02-02 09:16:31,608 INFO L231 Difference]: Finished difference. Result has 449 places, 584 transitions, 12859 flow [2024-02-02 09:16:31,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12516, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12859, PETRI_PLACES=449, PETRI_TRANSITIONS=584} [2024-02-02 09:16:31,609 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 377 predicate places. [2024-02-02 09:16:31,609 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 584 transitions, 12859 flow [2024-02-02 09:16:31,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:31,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:31,632 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] [2024-02-02 09:16:31,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-02-02 09:16:31,633 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:31,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:31,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1001992778, now seen corresponding path program 2 times [2024-02-02 09:16:31,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:31,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014920244] [2024-02-02 09:16:31,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:31,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:31,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:31,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014920244] [2024-02-02 09:16:31,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014920244] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:31,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:31,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:31,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288421708] [2024-02-02 09:16:31,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:31,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:31,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:31,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:31,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:31,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:31,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 584 transitions, 12859 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:31,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:31,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:31,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:33,825 INFO L124 PetriNetUnfolderBase]: 3468/6843 cut-off events. [2024-02-02 09:16:33,826 INFO L125 PetriNetUnfolderBase]: For 211935/213322 co-relation queries the response was YES. [2024-02-02 09:16:33,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50884 conditions, 6843 events. 3468/6843 cut-off events. For 211935/213322 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 54716 event pairs, 898 based on Foata normal form. 104/6823 useless extension candidates. Maximal degree in co-relation 50758. Up to 3465 conditions per place. [2024-02-02 09:16:33,899 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 492 selfloop transitions, 113 changer transitions 16/649 dead transitions. [2024-02-02 09:16:33,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 649 transitions, 14714 flow [2024-02-02 09:16:33,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:16:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:16:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 295 transitions. [2024-02-02 09:16:33,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39438502673796794 [2024-02-02 09:16:33,900 INFO L175 Difference]: Start difference. First operand has 449 places, 584 transitions, 12859 flow. Second operand 11 states and 295 transitions. [2024-02-02 09:16:33,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 649 transitions, 14714 flow [2024-02-02 09:16:34,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 649 transitions, 14340 flow, removed 12 selfloop flow, removed 17 redundant places. [2024-02-02 09:16:34,607 INFO L231 Difference]: Finished difference. Result has 443 places, 568 transitions, 12476 flow [2024-02-02 09:16:34,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12493, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12476, PETRI_PLACES=443, PETRI_TRANSITIONS=568} [2024-02-02 09:16:34,608 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 371 predicate places. [2024-02-02 09:16:34,608 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 568 transitions, 12476 flow [2024-02-02 09:16:34,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:34,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:34,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:34,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-02-02 09:16:34,609 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:34,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:34,610 INFO L85 PathProgramCache]: Analyzing trace with hash -535564728, now seen corresponding path program 6 times [2024-02-02 09:16:34,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:34,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743854692] [2024-02-02 09:16:34,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:34,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:34,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:34,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743854692] [2024-02-02 09:16:34,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743854692] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:34,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:34,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:34,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951498834] [2024-02-02 09:16:34,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:34,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:34,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:34,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:34,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:34,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:34,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 568 transitions, 12476 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:34,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:34,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:34,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:36,679 INFO L124 PetriNetUnfolderBase]: 3341/6776 cut-off events. [2024-02-02 09:16:36,680 INFO L125 PetriNetUnfolderBase]: For 203818/204396 co-relation queries the response was YES. [2024-02-02 09:16:36,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50038 conditions, 6776 events. 3341/6776 cut-off events. For 203818/204396 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 55351 event pairs, 808 based on Foata normal form. 93/6712 useless extension candidates. Maximal degree in co-relation 49914. Up to 2006 conditions per place. [2024-02-02 09:16:36,770 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 400 selfloop transitions, 155 changer transitions 35/619 dead transitions. [2024-02-02 09:16:36,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 619 transitions, 14249 flow [2024-02-02 09:16:36,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:16:36,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:16:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-02-02 09:16:36,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084967320261438 [2024-02-02 09:16:36,772 INFO L175 Difference]: Start difference. First operand has 443 places, 568 transitions, 12476 flow. Second operand 9 states and 250 transitions. [2024-02-02 09:16:36,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 619 transitions, 14249 flow [2024-02-02 09:16:37,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 619 transitions, 13894 flow, removed 15 selfloop flow, removed 21 redundant places. [2024-02-02 09:16:37,612 INFO L231 Difference]: Finished difference. Result has 431 places, 534 transitions, 11824 flow [2024-02-02 09:16:37,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12141, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11824, PETRI_PLACES=431, PETRI_TRANSITIONS=534} [2024-02-02 09:16:37,613 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 359 predicate places. [2024-02-02 09:16:37,613 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 534 transitions, 11824 flow [2024-02-02 09:16:37,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:37,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:37,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:37,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-02-02 09:16:37,613 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:37,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1830588880, now seen corresponding path program 7 times [2024-02-02 09:16:37,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:37,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120782119] [2024-02-02 09:16:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:37,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:37,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:37,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120782119] [2024-02-02 09:16:37,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120782119] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:37,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:37,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:37,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397383480] [2024-02-02 09:16:37,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:37,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:37,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:37,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:37,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:37,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:37,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 534 transitions, 11824 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:37,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:37,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:37,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:39,760 INFO L124 PetriNetUnfolderBase]: 3172/6455 cut-off events. [2024-02-02 09:16:39,761 INFO L125 PetriNetUnfolderBase]: For 190345/190935 co-relation queries the response was YES. [2024-02-02 09:16:39,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47706 conditions, 6455 events. 3172/6455 cut-off events. For 190345/190935 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 52410 event pairs, 770 based on Foata normal form. 105/6412 useless extension candidates. Maximal degree in co-relation 47586. Up to 1910 conditions per place. [2024-02-02 09:16:39,852 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 410 selfloop transitions, 137 changer transitions 12/588 dead transitions. [2024-02-02 09:16:39,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 588 transitions, 13527 flow [2024-02-02 09:16:39,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:16:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:16:39,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-02-02 09:16:39,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035947712418301 [2024-02-02 09:16:39,854 INFO L175 Difference]: Start difference. First operand has 431 places, 534 transitions, 11824 flow. Second operand 9 states and 247 transitions. [2024-02-02 09:16:39,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 588 transitions, 13527 flow [2024-02-02 09:16:40,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 588 transitions, 12952 flow, removed 8 selfloop flow, removed 21 redundant places. [2024-02-02 09:16:40,641 INFO L231 Difference]: Finished difference. Result has 419 places, 522 transitions, 11343 flow [2024-02-02 09:16:40,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=11249, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11343, PETRI_PLACES=419, PETRI_TRANSITIONS=522} [2024-02-02 09:16:40,642 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 347 predicate places. [2024-02-02 09:16:40,642 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 522 transitions, 11343 flow [2024-02-02 09:16:40,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:40,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:40,643 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] [2024-02-02 09:16:40,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-02-02 09:16:40,643 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:40,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:40,643 INFO L85 PathProgramCache]: Analyzing trace with hash -863497750, now seen corresponding path program 3 times [2024-02-02 09:16:40,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:40,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766634559] [2024-02-02 09:16:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:40,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:40,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:40,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766634559] [2024-02-02 09:16:40,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766634559] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:40,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:40,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:40,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111734356] [2024-02-02 09:16:40,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:40,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:40,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:40,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:40,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:40,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:40,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 522 transitions, 11343 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:40,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:40,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:40,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:42,767 INFO L124 PetriNetUnfolderBase]: 3327/6677 cut-off events. [2024-02-02 09:16:42,767 INFO L125 PetriNetUnfolderBase]: For 184139/185461 co-relation queries the response was YES. [2024-02-02 09:16:42,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48463 conditions, 6677 events. 3327/6677 cut-off events. For 184139/185461 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 53879 event pairs, 1081 based on Foata normal form. 90/6637 useless extension candidates. Maximal degree in co-relation 48346. Up to 4670 conditions per place. [2024-02-02 09:16:42,843 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 495 selfloop transitions, 87 changer transitions 9/616 dead transitions. [2024-02-02 09:16:42,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 616 transitions, 13490 flow [2024-02-02 09:16:42,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:16:42,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:16:42,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 315 transitions. [2024-02-02 09:16:42,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-02-02 09:16:42,844 INFO L175 Difference]: Start difference. First operand has 419 places, 522 transitions, 11343 flow. Second operand 12 states and 315 transitions. [2024-02-02 09:16:42,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 616 transitions, 13490 flow [2024-02-02 09:16:43,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 616 transitions, 13194 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-02 09:16:43,550 INFO L231 Difference]: Finished difference. Result has 423 places, 515 transitions, 11074 flow [2024-02-02 09:16:43,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=11047, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11074, PETRI_PLACES=423, PETRI_TRANSITIONS=515} [2024-02-02 09:16:43,551 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 351 predicate places. [2024-02-02 09:16:43,551 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 515 transitions, 11074 flow [2024-02-02 09:16:43,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:43,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:43,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:43,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-02-02 09:16:43,552 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:43,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:43,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1305497452, now seen corresponding path program 4 times [2024-02-02 09:16:43,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:43,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319942031] [2024-02-02 09:16:43,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:43,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:43,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:43,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319942031] [2024-02-02 09:16:43,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319942031] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:43,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:43,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:43,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953367205] [2024-02-02 09:16:43,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:43,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:43,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:43,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:43,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:43,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:43,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 515 transitions, 11074 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:43,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:43,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:43,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:45,477 INFO L124 PetriNetUnfolderBase]: 3264/6555 cut-off events. [2024-02-02 09:16:45,477 INFO L125 PetriNetUnfolderBase]: For 175974/177302 co-relation queries the response was YES. [2024-02-02 09:16:45,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47280 conditions, 6555 events. 3264/6555 cut-off events. For 175974/177302 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 52768 event pairs, 1072 based on Foata normal form. 88/6512 useless extension candidates. Maximal degree in co-relation 47163. Up to 4670 conditions per place. [2024-02-02 09:16:45,558 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 464 selfloop transitions, 91 changer transitions 18/598 dead transitions. [2024-02-02 09:16:45,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 598 transitions, 13002 flow [2024-02-02 09:16:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 09:16:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 09:16:45,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 331 transitions. [2024-02-02 09:16:45,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3744343891402715 [2024-02-02 09:16:45,560 INFO L175 Difference]: Start difference. First operand has 423 places, 515 transitions, 11074 flow. Second operand 13 states and 331 transitions. [2024-02-02 09:16:45,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 598 transitions, 13002 flow [2024-02-02 09:16:46,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 598 transitions, 12850 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-02 09:16:46,232 INFO L231 Difference]: Finished difference. Result has 427 places, 500 transitions, 10883 flow [2024-02-02 09:16:46,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10922, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10883, PETRI_PLACES=427, PETRI_TRANSITIONS=500} [2024-02-02 09:16:46,233 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 355 predicate places. [2024-02-02 09:16:46,233 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 500 transitions, 10883 flow [2024-02-02 09:16:46,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:46,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:46,233 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] [2024-02-02 09:16:46,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-02-02 09:16:46,233 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:46,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:46,234 INFO L85 PathProgramCache]: Analyzing trace with hash 701943514, now seen corresponding path program 5 times [2024-02-02 09:16:46,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:46,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117957192] [2024-02-02 09:16:46,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:46,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:46,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:46,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117957192] [2024-02-02 09:16:46,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117957192] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:46,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:46,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:46,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248474826] [2024-02-02 09:16:46,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:46,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:46,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:46,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:46,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:46,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:46,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 500 transitions, 10883 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:46,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:46,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:46,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:48,051 INFO L124 PetriNetUnfolderBase]: 3208/6445 cut-off events. [2024-02-02 09:16:48,051 INFO L125 PetriNetUnfolderBase]: For 173522/174835 co-relation queries the response was YES. [2024-02-02 09:16:48,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46645 conditions, 6445 events. 3208/6445 cut-off events. For 173522/174835 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 51741 event pairs, 1056 based on Foata normal form. 80/6394 useless extension candidates. Maximal degree in co-relation 46527. Up to 4670 conditions per place. [2024-02-02 09:16:48,126 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 454 selfloop transitions, 72 changer transitions 30/580 dead transitions. [2024-02-02 09:16:48,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 580 transitions, 12744 flow [2024-02-02 09:16:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:16:48,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:16:48,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 287 transitions. [2024-02-02 09:16:48,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3836898395721925 [2024-02-02 09:16:48,127 INFO L175 Difference]: Start difference. First operand has 427 places, 500 transitions, 10883 flow. Second operand 11 states and 287 transitions. [2024-02-02 09:16:48,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 580 transitions, 12744 flow [2024-02-02 09:16:48,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 580 transitions, 12563 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-02-02 09:16:48,776 INFO L231 Difference]: Finished difference. Result has 426 places, 474 transitions, 10400 flow [2024-02-02 09:16:48,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10702, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10400, PETRI_PLACES=426, PETRI_TRANSITIONS=474} [2024-02-02 09:16:48,777 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 354 predicate places. [2024-02-02 09:16:48,777 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 474 transitions, 10400 flow [2024-02-02 09:16:48,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:48,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:48,777 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] [2024-02-02 09:16:48,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-02-02 09:16:48,778 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:48,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:48,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1099403054, now seen corresponding path program 6 times [2024-02-02 09:16:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:48,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074130897] [2024-02-02 09:16:48,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:48,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:49,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:49,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074130897] [2024-02-02 09:16:49,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074130897] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:49,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:49,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:49,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928052088] [2024-02-02 09:16:49,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:49,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:49,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:49,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:49,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:49,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:49,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 474 transitions, 10400 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:49,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:49,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:49,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:50,571 INFO L124 PetriNetUnfolderBase]: 3130/6283 cut-off events. [2024-02-02 09:16:50,571 INFO L125 PetriNetUnfolderBase]: For 172542/173846 co-relation queries the response was YES. [2024-02-02 09:16:50,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45830 conditions, 6283 events. 3130/6283 cut-off events. For 172542/173846 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 50199 event pairs, 1008 based on Foata normal form. 97/6253 useless extension candidates. Maximal degree in co-relation 45711. Up to 4445 conditions per place. [2024-02-02 09:16:50,650 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 471 selfloop transitions, 62 changer transitions 9/566 dead transitions. [2024-02-02 09:16:50,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 566 transitions, 12467 flow [2024-02-02 09:16:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:16:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:16:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 294 transitions. [2024-02-02 09:16:50,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2024-02-02 09:16:50,652 INFO L175 Difference]: Start difference. First operand has 426 places, 474 transitions, 10400 flow. Second operand 11 states and 294 transitions. [2024-02-02 09:16:50,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 566 transitions, 12467 flow [2024-02-02 09:16:51,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 566 transitions, 12261 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-02-02 09:16:51,480 INFO L231 Difference]: Finished difference. Result has 423 places, 467 transitions, 10164 flow [2024-02-02 09:16:51,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10200, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10164, PETRI_PLACES=423, PETRI_TRANSITIONS=467} [2024-02-02 09:16:51,481 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 351 predicate places. [2024-02-02 09:16:51,481 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 467 transitions, 10164 flow [2024-02-02 09:16:51,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:51,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:51,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:51,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-02-02 09:16:51,485 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:51,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash 904802564, now seen corresponding path program 8 times [2024-02-02 09:16:51,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:51,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368389117] [2024-02-02 09:16:51,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:51,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:51,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:51,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368389117] [2024-02-02 09:16:51,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368389117] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:51,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:51,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:51,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841258552] [2024-02-02 09:16:51,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:51,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:51,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:51,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:51,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:51,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:51,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 467 transitions, 10164 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:51,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:51,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:51,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:53,282 INFO L124 PetriNetUnfolderBase]: 2923/6117 cut-off events. [2024-02-02 09:16:53,282 INFO L125 PetriNetUnfolderBase]: For 165731/166268 co-relation queries the response was YES. [2024-02-02 09:16:53,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44123 conditions, 6117 events. 2923/6117 cut-off events. For 165731/166268 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 50118 event pairs, 727 based on Foata normal form. 73/6063 useless extension candidates. Maximal degree in co-relation 44005. Up to 3038 conditions per place. [2024-02-02 09:16:53,354 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 351 selfloop transitions, 135 changer transitions 9/524 dead transitions. [2024-02-02 09:16:53,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 524 transitions, 11749 flow [2024-02-02 09:16:53,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:16:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:16:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 288 transitions. [2024-02-02 09:16:53,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3850267379679144 [2024-02-02 09:16:53,356 INFO L175 Difference]: Start difference. First operand has 423 places, 467 transitions, 10164 flow. Second operand 11 states and 288 transitions. [2024-02-02 09:16:53,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 524 transitions, 11749 flow [2024-02-02 09:16:54,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 524 transitions, 11377 flow, removed 3 selfloop flow, removed 23 redundant places. [2024-02-02 09:16:54,026 INFO L231 Difference]: Finished difference. Result has 409 places, 456 transitions, 9924 flow [2024-02-02 09:16:54,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9724, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9924, PETRI_PLACES=409, PETRI_TRANSITIONS=456} [2024-02-02 09:16:54,027 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 337 predicate places. [2024-02-02 09:16:54,027 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 456 transitions, 9924 flow [2024-02-02 09:16:54,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:54,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:54,027 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] [2024-02-02 09:16:54,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-02-02 09:16:54,028 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:54,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:54,028 INFO L85 PathProgramCache]: Analyzing trace with hash 216569404, now seen corresponding path program 7 times [2024-02-02 09:16:54,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:54,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486279957] [2024-02-02 09:16:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:54,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:54,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:54,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486279957] [2024-02-02 09:16:54,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486279957] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:54,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:54,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:54,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713907758] [2024-02-02 09:16:54,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:54,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:54,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:54,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:54,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:54,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:54,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 456 transitions, 9924 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:54,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:54,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:54,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:56,127 INFO L124 PetriNetUnfolderBase]: 2994/6036 cut-off events. [2024-02-02 09:16:56,128 INFO L125 PetriNetUnfolderBase]: For 159860/161026 co-relation queries the response was YES. [2024-02-02 09:16:56,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43758 conditions, 6036 events. 2994/6036 cut-off events. For 159860/161026 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 48016 event pairs, 956 based on Foata normal form. 95/6011 useless extension candidates. Maximal degree in co-relation 43649. Up to 4338 conditions per place. [2024-02-02 09:16:56,210 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 426 selfloop transitions, 71 changer transitions 18/539 dead transitions. [2024-02-02 09:16:56,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 539 transitions, 11750 flow [2024-02-02 09:16:56,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:16:56,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:16:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 312 transitions. [2024-02-02 09:16:56,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-02-02 09:16:56,212 INFO L175 Difference]: Start difference. First operand has 409 places, 456 transitions, 9924 flow. Second operand 12 states and 312 transitions. [2024-02-02 09:16:56,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 539 transitions, 11750 flow [2024-02-02 09:16:56,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 539 transitions, 11423 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-02-02 09:16:56,919 INFO L231 Difference]: Finished difference. Result has 408 places, 441 transitions, 9481 flow [2024-02-02 09:16:56,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9599, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9481, PETRI_PLACES=408, PETRI_TRANSITIONS=441} [2024-02-02 09:16:56,919 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 336 predicate places. [2024-02-02 09:16:56,919 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 441 transitions, 9481 flow [2024-02-02 09:16:56,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:56,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:56,934 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] [2024-02-02 09:16:56,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-02-02 09:16:56,935 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:56,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:56,935 INFO L85 PathProgramCache]: Analyzing trace with hash -414152568, now seen corresponding path program 8 times [2024-02-02 09:16:56,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:56,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187604559] [2024-02-02 09:16:56,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:56,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:57,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:57,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187604559] [2024-02-02 09:16:57,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187604559] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:57,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:57,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:57,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349542545] [2024-02-02 09:16:57,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:57,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:57,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:57,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:57,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:57,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:57,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 441 transitions, 9481 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:57,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:57,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:57,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:58,877 INFO L124 PetriNetUnfolderBase]: 2923/5932 cut-off events. [2024-02-02 09:16:58,877 INFO L125 PetriNetUnfolderBase]: For 141775/142942 co-relation queries the response was YES. [2024-02-02 09:16:58,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42477 conditions, 5932 events. 2923/5932 cut-off events. For 141775/142942 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 47157 event pairs, 776 based on Foata normal form. 89/5909 useless extension candidates. Maximal degree in co-relation 42371. Up to 2549 conditions per place. [2024-02-02 09:16:58,944 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 403 selfloop transitions, 110 changer transitions 9/546 dead transitions. [2024-02-02 09:16:58,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 546 transitions, 11595 flow [2024-02-02 09:16:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-02 09:16:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-02 09:16:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 367 transitions. [2024-02-02 09:16:58,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3855042016806723 [2024-02-02 09:16:58,945 INFO L175 Difference]: Start difference. First operand has 408 places, 441 transitions, 9481 flow. Second operand 14 states and 367 transitions. [2024-02-02 09:16:58,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 546 transitions, 11595 flow [2024-02-02 09:16:59,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 546 transitions, 11460 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-02-02 09:16:59,505 INFO L231 Difference]: Finished difference. Result has 411 places, 434 transitions, 9477 flow [2024-02-02 09:16:59,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9346, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9477, PETRI_PLACES=411, PETRI_TRANSITIONS=434} [2024-02-02 09:16:59,505 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 339 predicate places. [2024-02-02 09:16:59,505 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 434 transitions, 9477 flow [2024-02-02 09:16:59,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:59,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:59,506 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] [2024-02-02 09:16:59,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-02-02 09:16:59,506 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:59,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:59,506 INFO L85 PathProgramCache]: Analyzing trace with hash -794598324, now seen corresponding path program 9 times [2024-02-02 09:16:59,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:59,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42489194] [2024-02-02 09:16:59,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:59,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:59,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:59,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42489194] [2024-02-02 09:16:59,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42489194] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:59,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:59,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:16:59,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663155151] [2024-02-02 09:16:59,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:59,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:16:59,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:59,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:16:59,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:16:59,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:59,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 434 transitions, 9477 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:59,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:59,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:59,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:01,213 INFO L124 PetriNetUnfolderBase]: 2922/5902 cut-off events. [2024-02-02 09:17:01,214 INFO L125 PetriNetUnfolderBase]: For 146725/147872 co-relation queries the response was YES. [2024-02-02 09:17:01,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42847 conditions, 5902 events. 2922/5902 cut-off events. For 146725/147872 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 46712 event pairs, 946 based on Foata normal form. 89/5871 useless extension candidates. Maximal degree in co-relation 42740. Up to 4318 conditions per place. [2024-02-02 09:17:01,278 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 423 selfloop transitions, 54 changer transitions 19/520 dead transitions. [2024-02-02 09:17:01,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 520 transitions, 11264 flow [2024-02-02 09:17:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:17:01,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:17:01,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2024-02-02 09:17:01,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3762254901960784 [2024-02-02 09:17:01,280 INFO L175 Difference]: Start difference. First operand has 411 places, 434 transitions, 9477 flow. Second operand 12 states and 307 transitions. [2024-02-02 09:17:01,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 520 transitions, 11264 flow [2024-02-02 09:17:01,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 520 transitions, 11078 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-02-02 09:17:01,873 INFO L231 Difference]: Finished difference. Result has 411 places, 419 transitions, 9125 flow [2024-02-02 09:17:01,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9291, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9125, PETRI_PLACES=411, PETRI_TRANSITIONS=419} [2024-02-02 09:17:01,875 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 339 predicate places. [2024-02-02 09:17:01,875 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 419 transitions, 9125 flow [2024-02-02 09:17:01,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:01,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:01,875 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] [2024-02-02 09:17:01,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-02-02 09:17:01,875 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:01,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:01,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2037576008, now seen corresponding path program 10 times [2024-02-02 09:17:01,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:01,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828986955] [2024-02-02 09:17:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:01,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:02,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:02,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828986955] [2024-02-02 09:17:02,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828986955] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:02,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:02,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:17:02,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890119697] [2024-02-02 09:17:02,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:02,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:17:02,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:02,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:17:02,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:17:02,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:02,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 419 transitions, 9125 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:02,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:02,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:02,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:03,527 INFO L124 PetriNetUnfolderBase]: 2809/5718 cut-off events. [2024-02-02 09:17:03,527 INFO L125 PetriNetUnfolderBase]: For 134112/135229 co-relation queries the response was YES. [2024-02-02 09:17:03,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41002 conditions, 5718 events. 2809/5718 cut-off events. For 134112/135229 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 45182 event pairs, 762 based on Foata normal form. 77/5686 useless extension candidates. Maximal degree in co-relation 40894. Up to 2553 conditions per place. [2024-02-02 09:17:03,597 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 335 selfloop transitions, 125 changer transitions 16/500 dead transitions. [2024-02-02 09:17:03,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 500 transitions, 10790 flow [2024-02-02 09:17:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 09:17:03,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 09:17:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 331 transitions. [2024-02-02 09:17:03,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3744343891402715 [2024-02-02 09:17:03,598 INFO L175 Difference]: Start difference. First operand has 411 places, 419 transitions, 9125 flow. Second operand 13 states and 331 transitions. [2024-02-02 09:17:03,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 500 transitions, 10790 flow [2024-02-02 09:17:04,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 500 transitions, 10671 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-02-02 09:17:04,210 INFO L231 Difference]: Finished difference. Result has 411 places, 404 transitions, 9011 flow [2024-02-02 09:17:04,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9006, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9011, PETRI_PLACES=411, PETRI_TRANSITIONS=404} [2024-02-02 09:17:04,211 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 339 predicate places. [2024-02-02 09:17:04,211 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 404 transitions, 9011 flow [2024-02-02 09:17:04,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:04,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:04,211 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] [2024-02-02 09:17:04,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-02-02 09:17:04,212 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:04,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash 446265768, now seen corresponding path program 11 times [2024-02-02 09:17:04,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:04,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084128375] [2024-02-02 09:17:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:04,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:04,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:04,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:04,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084128375] [2024-02-02 09:17:04,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084128375] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:04,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:04,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:17:04,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521236139] [2024-02-02 09:17:04,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:04,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:17:04,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:04,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:17:04,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:17:04,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:04,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 404 transitions, 9011 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:04,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:04,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:04,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:06,146 INFO L124 PetriNetUnfolderBase]: 2776/5655 cut-off events. [2024-02-02 09:17:06,146 INFO L125 PetriNetUnfolderBase]: For 136362/137479 co-relation queries the response was YES. [2024-02-02 09:17:06,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40892 conditions, 5655 events. 2776/5655 cut-off events. For 136362/137479 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 44466 event pairs, 817 based on Foata normal form. 90/5662 useless extension candidates. Maximal degree in co-relation 40783. Up to 1958 conditions per place. [2024-02-02 09:17:06,233 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 339 selfloop transitions, 92 changer transitions 11/464 dead transitions. [2024-02-02 09:17:06,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 464 transitions, 10543 flow [2024-02-02 09:17:06,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:17:06,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:17:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-02-02 09:17:06,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035947712418301 [2024-02-02 09:17:06,234 INFO L175 Difference]: Start difference. First operand has 411 places, 404 transitions, 9011 flow. Second operand 9 states and 247 transitions. [2024-02-02 09:17:06,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 464 transitions, 10543 flow [2024-02-02 09:17:06,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 464 transitions, 10321 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-02-02 09:17:06,922 INFO L231 Difference]: Finished difference. Result has 406 places, 394 transitions, 8811 flow [2024-02-02 09:17:06,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8789, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8811, PETRI_PLACES=406, PETRI_TRANSITIONS=394} [2024-02-02 09:17:06,922 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 334 predicate places. [2024-02-02 09:17:06,923 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 394 transitions, 8811 flow [2024-02-02 09:17:06,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:06,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:06,936 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] [2024-02-02 09:17:06,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-02-02 09:17:06,937 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:06,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:06,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1510525716, now seen corresponding path program 12 times [2024-02-02 09:17:06,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:06,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442520068] [2024-02-02 09:17:06,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:06,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:07,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:07,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442520068] [2024-02-02 09:17:07,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442520068] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:07,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:07,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:17:07,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148249578] [2024-02-02 09:17:07,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:07,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:17:07,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:07,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:17:07,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:17:07,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:07,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 394 transitions, 8811 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:07,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:07,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:07,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:08,591 INFO L124 PetriNetUnfolderBase]: 2713/5542 cut-off events. [2024-02-02 09:17:08,591 INFO L125 PetriNetUnfolderBase]: For 132479/133570 co-relation queries the response was YES. [2024-02-02 09:17:08,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39997 conditions, 5542 events. 2713/5542 cut-off events. For 132479/133570 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 43470 event pairs, 805 based on Foata normal form. 70/5532 useless extension candidates. Maximal degree in co-relation 39887. Up to 1958 conditions per place. [2024-02-02 09:17:08,655 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 326 selfloop transitions, 89 changer transitions 18/454 dead transitions. [2024-02-02 09:17:08,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 454 transitions, 10247 flow [2024-02-02 09:17:08,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:17:08,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:17:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2024-02-02 09:17:08,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911764705882353 [2024-02-02 09:17:08,657 INFO L175 Difference]: Start difference. First operand has 406 places, 394 transitions, 8811 flow. Second operand 10 states and 266 transitions. [2024-02-02 09:17:08,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 454 transitions, 10247 flow [2024-02-02 09:17:09,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 454 transitions, 9871 flow, removed 24 selfloop flow, removed 14 redundant places. [2024-02-02 09:17:09,214 INFO L231 Difference]: Finished difference. Result has 402 places, 377 transitions, 8383 flow [2024-02-02 09:17:09,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8459, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8383, PETRI_PLACES=402, PETRI_TRANSITIONS=377} [2024-02-02 09:17:09,215 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 330 predicate places. [2024-02-02 09:17:09,215 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 377 transitions, 8383 flow [2024-02-02 09:17:09,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:09,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:09,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:09,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-02-02 09:17:09,215 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:09,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:09,216 INFO L85 PathProgramCache]: Analyzing trace with hash 447186468, now seen corresponding path program 13 times [2024-02-02 09:17:09,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:09,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090820471] [2024-02-02 09:17:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:09,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:09,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:09,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090820471] [2024-02-02 09:17:09,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090820471] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:09,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:09,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:17:09,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016794097] [2024-02-02 09:17:09,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:09,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:17:09,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:09,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:17:09,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:17:09,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:09,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 377 transitions, 8383 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:09,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:09,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:09,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:10,753 INFO L124 PetriNetUnfolderBase]: 2625/5380 cut-off events. [2024-02-02 09:17:10,753 INFO L125 PetriNetUnfolderBase]: For 114947/115761 co-relation queries the response was YES. [2024-02-02 09:17:10,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37721 conditions, 5380 events. 2625/5380 cut-off events. For 114947/115761 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 41981 event pairs, 786 based on Foata normal form. 60/5357 useless extension candidates. Maximal degree in co-relation 37616. Up to 1958 conditions per place. [2024-02-02 09:17:10,815 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 286 selfloop transitions, 95 changer transitions 21/423 dead transitions. [2024-02-02 09:17:10,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 423 transitions, 9522 flow [2024-02-02 09:17:10,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:17:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:17:10,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-02-02 09:17:10,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3954248366013072 [2024-02-02 09:17:10,816 INFO L175 Difference]: Start difference. First operand has 402 places, 377 transitions, 8383 flow. Second operand 9 states and 242 transitions. [2024-02-02 09:17:10,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 423 transitions, 9522 flow [2024-02-02 09:17:11,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 423 transitions, 9060 flow, removed 13 selfloop flow, removed 18 redundant places. [2024-02-02 09:17:11,307 INFO L231 Difference]: Finished difference. Result has 393 places, 356 transitions, 7833 flow [2024-02-02 09:17:11,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7929, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7833, PETRI_PLACES=393, PETRI_TRANSITIONS=356} [2024-02-02 09:17:11,308 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 321 predicate places. [2024-02-02 09:17:11,308 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 356 transitions, 7833 flow [2024-02-02 09:17:11,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:11,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:11,308 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] [2024-02-02 09:17:11,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-02-02 09:17:11,308 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:11,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:11,309 INFO L85 PathProgramCache]: Analyzing trace with hash -24612976, now seen corresponding path program 14 times [2024-02-02 09:17:11,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:11,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537888340] [2024-02-02 09:17:11,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:11,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:11,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:11,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537888340] [2024-02-02 09:17:11,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537888340] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:11,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:11,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:17:11,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317792408] [2024-02-02 09:17:11,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:11,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:17:11,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:11,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:17:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:17:11,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:11,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 356 transitions, 7833 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:11,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:11,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:11,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:12,821 INFO L124 PetriNetUnfolderBase]: 2598/5361 cut-off events. [2024-02-02 09:17:12,821 INFO L125 PetriNetUnfolderBase]: For 99570/100389 co-relation queries the response was YES. [2024-02-02 09:17:12,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36979 conditions, 5361 events. 2598/5361 cut-off events. For 99570/100389 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 42147 event pairs, 620 based on Foata normal form. 70/5346 useless extension candidates. Maximal degree in co-relation 36879. Up to 2536 conditions per place. [2024-02-02 09:17:12,882 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 304 selfloop transitions, 97 changer transitions 6/428 dead transitions. [2024-02-02 09:17:12,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 428 transitions, 9320 flow [2024-02-02 09:17:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 09:17:12,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 09:17:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-02-02 09:17:12,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40294117647058825 [2024-02-02 09:17:12,883 INFO L175 Difference]: Start difference. First operand has 393 places, 356 transitions, 7833 flow. Second operand 10 states and 274 transitions. [2024-02-02 09:17:12,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 428 transitions, 9320 flow [2024-02-02 09:17:13,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 428 transitions, 8825 flow, removed 17 selfloop flow, removed 22 redundant places. [2024-02-02 09:17:13,320 INFO L231 Difference]: Finished difference. Result has 381 places, 352 transitions, 7494 flow [2024-02-02 09:17:13,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7356, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7494, PETRI_PLACES=381, PETRI_TRANSITIONS=352} [2024-02-02 09:17:13,321 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 309 predicate places. [2024-02-02 09:17:13,321 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 352 transitions, 7494 flow [2024-02-02 09:17:13,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:13,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:13,321 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] [2024-02-02 09:17:13,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-02-02 09:17:13,321 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:13,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:13,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1012253520, now seen corresponding path program 15 times [2024-02-02 09:17:13,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:13,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764322377] [2024-02-02 09:17:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:13,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:13,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:13,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:13,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764322377] [2024-02-02 09:17:13,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764322377] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:13,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:13,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:17:13,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589064265] [2024-02-02 09:17:13,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:13,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:17:13,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:13,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:17:13,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:17:13,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:13,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 352 transitions, 7494 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:13,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:13,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:13,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:14,751 INFO L124 PetriNetUnfolderBase]: 2586/5332 cut-off events. [2024-02-02 09:17:14,751 INFO L125 PetriNetUnfolderBase]: For 91713/92466 co-relation queries the response was YES. [2024-02-02 09:17:14,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36647 conditions, 5332 events. 2586/5332 cut-off events. For 91713/92466 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 41620 event pairs, 529 based on Foata normal form. 82/5317 useless extension candidates. Maximal degree in co-relation 36551. Up to 2224 conditions per place. [2024-02-02 09:17:14,802 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 262 selfloop transitions, 124 changer transitions 6/413 dead transitions. [2024-02-02 09:17:14,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 413 transitions, 8753 flow [2024-02-02 09:17:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:17:14,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:17:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 291 transitions. [2024-02-02 09:17:14,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3890374331550802 [2024-02-02 09:17:14,803 INFO L175 Difference]: Start difference. First operand has 381 places, 352 transitions, 7494 flow. Second operand 11 states and 291 transitions. [2024-02-02 09:17:14,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 413 transitions, 8753 flow [2024-02-02 09:17:15,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 413 transitions, 8534 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-02 09:17:15,164 INFO L231 Difference]: Finished difference. Result has 384 places, 348 transitions, 7510 flow [2024-02-02 09:17:15,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7275, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7510, PETRI_PLACES=384, PETRI_TRANSITIONS=348} [2024-02-02 09:17:15,165 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 312 predicate places. [2024-02-02 09:17:15,165 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 348 transitions, 7510 flow [2024-02-02 09:17:15,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:15,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:15,165 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] [2024-02-02 09:17:15,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-02-02 09:17:15,166 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:15,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:15,166 INFO L85 PathProgramCache]: Analyzing trace with hash -241709830, now seen corresponding path program 16 times [2024-02-02 09:17:15,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:15,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970747248] [2024-02-02 09:17:15,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:15,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:15,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:15,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970747248] [2024-02-02 09:17:15,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970747248] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:15,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:15,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:17:15,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951094826] [2024-02-02 09:17:15,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:15,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:17:15,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:15,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:17:15,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:17:15,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:15,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 348 transitions, 7510 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:15,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:15,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:15,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:16,586 INFO L124 PetriNetUnfolderBase]: 2528/5263 cut-off events. [2024-02-02 09:17:16,586 INFO L125 PetriNetUnfolderBase]: For 88727/89474 co-relation queries the response was YES. [2024-02-02 09:17:16,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36656 conditions, 5263 events. 2528/5263 cut-off events. For 88727/89474 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 41390 event pairs, 602 based on Foata normal form. 70/5248 useless extension candidates. Maximal degree in co-relation 36559. Up to 2566 conditions per place. [2024-02-02 09:17:16,650 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 305 selfloop transitions, 94 changer transitions 9/429 dead transitions. [2024-02-02 09:17:16,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 429 transitions, 9060 flow [2024-02-02 09:17:16,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:17:16,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:17:16,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 322 transitions. [2024-02-02 09:17:16,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946078431372549 [2024-02-02 09:17:16,652 INFO L175 Difference]: Start difference. First operand has 384 places, 348 transitions, 7510 flow. Second operand 12 states and 322 transitions. [2024-02-02 09:17:16,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 429 transitions, 9060 flow [2024-02-02 09:17:17,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 429 transitions, 8663 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-02-02 09:17:17,059 INFO L231 Difference]: Finished difference. Result has 383 places, 341 transitions, 7243 flow [2024-02-02 09:17:17,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7132, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7243, PETRI_PLACES=383, PETRI_TRANSITIONS=341} [2024-02-02 09:17:17,060 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 311 predicate places. [2024-02-02 09:17:17,060 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 341 transitions, 7243 flow [2024-02-02 09:17:17,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:17,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:17,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:17,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-02-02 09:17:17,061 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:17,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:17,061 INFO L85 PathProgramCache]: Analyzing trace with hash -986308380, now seen corresponding path program 17 times [2024-02-02 09:17:17,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:17,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270713004] [2024-02-02 09:17:17,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:17,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:17,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:17,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270713004] [2024-02-02 09:17:17,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270713004] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:17,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:17,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:17:17,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679076240] [2024-02-02 09:17:17,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:17,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:17:17,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:17,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:17:17,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:17:17,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:17,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 341 transitions, 7243 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:17,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:17,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:17,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:18,757 INFO L124 PetriNetUnfolderBase]: 2542/5276 cut-off events. [2024-02-02 09:17:18,757 INFO L125 PetriNetUnfolderBase]: For 82344/83055 co-relation queries the response was YES. [2024-02-02 09:17:18,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36826 conditions, 5276 events. 2542/5276 cut-off events. For 82344/83055 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 41260 event pairs, 527 based on Foata normal form. 78/5257 useless extension candidates. Maximal degree in co-relation 36731. Up to 2224 conditions per place. [2024-02-02 09:17:18,806 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 261 selfloop transitions, 119 changer transitions 10/411 dead transitions. [2024-02-02 09:17:18,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 411 transitions, 8562 flow [2024-02-02 09:17:18,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 09:17:18,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 09:17:18,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 339 transitions. [2024-02-02 09:17:18,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3834841628959276 [2024-02-02 09:17:18,808 INFO L175 Difference]: Start difference. First operand has 383 places, 341 transitions, 7243 flow. Second operand 13 states and 339 transitions. [2024-02-02 09:17:18,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 411 transitions, 8562 flow [2024-02-02 09:17:19,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 411 transitions, 8369 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-02-02 09:17:19,128 INFO L231 Difference]: Finished difference. Result has 384 places, 332 transitions, 7194 flow [2024-02-02 09:17:19,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7052, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7194, PETRI_PLACES=384, PETRI_TRANSITIONS=332} [2024-02-02 09:17:19,129 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 312 predicate places. [2024-02-02 09:17:19,129 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 332 transitions, 7194 flow [2024-02-02 09:17:19,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:19,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:19,130 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, 1, 1] [2024-02-02 09:17:19,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-02-02 09:17:19,130 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:19,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash 166834192, now seen corresponding path program 18 times [2024-02-02 09:17:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:19,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790104151] [2024-02-02 09:17:19,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:19,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:19,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:19,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790104151] [2024-02-02 09:17:19,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790104151] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:19,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:19,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:17:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959249399] [2024-02-02 09:17:19,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:19,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:17:19,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:17:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:17:19,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:19,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 332 transitions, 7194 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:19,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:19,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:19,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:20,575 INFO L124 PetriNetUnfolderBase]: 2486/5189 cut-off events. [2024-02-02 09:17:20,576 INFO L125 PetriNetUnfolderBase]: For 77539/78262 co-relation queries the response was YES. [2024-02-02 09:17:20,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36158 conditions, 5189 events. 2486/5189 cut-off events. For 77539/78262 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 40681 event pairs, 614 based on Foata normal form. 56/5160 useless extension candidates. Maximal degree in co-relation 36063. Up to 2388 conditions per place. [2024-02-02 09:17:20,632 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 233 selfloop transitions, 129 changer transitions 11/394 dead transitions. [2024-02-02 09:17:20,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 394 transitions, 8429 flow [2024-02-02 09:17:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 09:17:20,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 09:17:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 289 transitions. [2024-02-02 09:17:20,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-02-02 09:17:20,634 INFO L175 Difference]: Start difference. First operand has 384 places, 332 transitions, 7194 flow. Second operand 11 states and 289 transitions. [2024-02-02 09:17:20,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 394 transitions, 8429 flow [2024-02-02 09:17:20,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 394 transitions, 8020 flow, removed 8 selfloop flow, removed 20 redundant places. [2024-02-02 09:17:21,002 INFO L231 Difference]: Finished difference. Result has 375 places, 322 transitions, 6911 flow [2024-02-02 09:17:21,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6796, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6911, PETRI_PLACES=375, PETRI_TRANSITIONS=322} [2024-02-02 09:17:21,003 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 303 predicate places. [2024-02-02 09:17:21,003 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 322 transitions, 6911 flow [2024-02-02 09:17:21,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:21,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:21,003 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] [2024-02-02 09:17:21,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-02-02 09:17:21,003 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:21,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:21,004 INFO L85 PathProgramCache]: Analyzing trace with hash -821555932, now seen corresponding path program 19 times [2024-02-02 09:17:21,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:21,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824985902] [2024-02-02 09:17:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:21,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:21,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:21,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824985902] [2024-02-02 09:17:21,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824985902] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:21,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:21,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:17:21,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249759670] [2024-02-02 09:17:21,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:21,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:17:21,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:21,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:17:21,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:17:21,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:21,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 322 transitions, 6911 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:21,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:21,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:21,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:22,467 INFO L124 PetriNetUnfolderBase]: 2510/5264 cut-off events. [2024-02-02 09:17:22,467 INFO L125 PetriNetUnfolderBase]: For 78279/78964 co-relation queries the response was YES. [2024-02-02 09:17:22,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36821 conditions, 5264 events. 2510/5264 cut-off events. For 78279/78964 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 41285 event pairs, 532 based on Foata normal form. 74/5247 useless extension candidates. Maximal degree in co-relation 36730. Up to 2234 conditions per place. [2024-02-02 09:17:22,532 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 207 selfloop transitions, 144 changer transitions 10/382 dead transitions. [2024-02-02 09:17:22,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 382 transitions, 8069 flow [2024-02-02 09:17:22,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:17:22,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:17:22,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 314 transitions. [2024-02-02 09:17:22,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38480392156862747 [2024-02-02 09:17:22,533 INFO L175 Difference]: Start difference. First operand has 375 places, 322 transitions, 6911 flow. Second operand 12 states and 314 transitions. [2024-02-02 09:17:22,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 382 transitions, 8069 flow [2024-02-02 09:17:23,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 382 transitions, 7799 flow, removed 2 selfloop flow, removed 17 redundant places. [2024-02-02 09:17:23,052 INFO L231 Difference]: Finished difference. Result has 370 places, 313 transitions, 6799 flow [2024-02-02 09:17:23,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6643, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6799, PETRI_PLACES=370, PETRI_TRANSITIONS=313} [2024-02-02 09:17:23,053 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 298 predicate places. [2024-02-02 09:17:23,053 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 313 transitions, 6799 flow [2024-02-02 09:17:23,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:23,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:23,053 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] [2024-02-02 09:17:23,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-02-02 09:17:23,054 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:23,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:23,054 INFO L85 PathProgramCache]: Analyzing trace with hash -715127584, now seen corresponding path program 20 times [2024-02-02 09:17:23,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:23,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268746548] [2024-02-02 09:17:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:23,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:23,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268746548] [2024-02-02 09:17:23,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268746548] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:23,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:23,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 09:17:23,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352121569] [2024-02-02 09:17:23,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:23,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 09:17:23,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:23,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 09:17:23,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 09:17:23,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:23,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 313 transitions, 6799 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:23,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:23,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:23,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:24,385 INFO L124 PetriNetUnfolderBase]: 2489/5184 cut-off events. [2024-02-02 09:17:24,386 INFO L125 PetriNetUnfolderBase]: For 74545/75234 co-relation queries the response was YES. [2024-02-02 09:17:24,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36751 conditions, 5184 events. 2489/5184 cut-off events. For 74545/75234 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 40326 event pairs, 458 based on Foata normal form. 60/5147 useless extension candidates. Maximal degree in co-relation 36661. Up to 2152 conditions per place. [2024-02-02 09:17:24,440 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 182 selfloop transitions, 145 changer transitions 17/364 dead transitions. [2024-02-02 09:17:24,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 364 transitions, 7784 flow [2024-02-02 09:17:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 09:17:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 09:17:24,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 304 transitions. [2024-02-02 09:17:24,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2024-02-02 09:17:24,442 INFO L175 Difference]: Start difference. First operand has 370 places, 313 transitions, 6799 flow. Second operand 12 states and 304 transitions. [2024-02-02 09:17:24,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 364 transitions, 7784 flow [2024-02-02 09:17:24,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 364 transitions, 7340 flow, removed 9 selfloop flow, removed 27 redundant places. [2024-02-02 09:17:24,759 INFO L231 Difference]: Finished difference. Result has 352 places, 295 transitions, 6406 flow [2024-02-02 09:17:24,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6293, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6406, PETRI_PLACES=352, PETRI_TRANSITIONS=295} [2024-02-02 09:17:24,759 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 280 predicate places. [2024-02-02 09:17:24,759 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 295 transitions, 6406 flow [2024-02-02 09:17:24,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:24,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:24,760 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] [2024-02-02 09:17:24,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-02-02 09:17:24,760 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:24,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:24,760 INFO L85 PathProgramCache]: Analyzing trace with hash -581016110, now seen corresponding path program 1 times [2024-02-02 09:17:24,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:24,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316219176] [2024-02-02 09:17:24,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:24,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:17:24,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:17:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:17:24,820 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:17:24,820 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:17:24,821 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 57 remaining) [2024-02-02 09:17:24,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 57 remaining) [2024-02-02 09:17:24,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 57 remaining) [2024-02-02 09:17:24,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 57 remaining) [2024-02-02 09:17:24,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 57 remaining) [2024-02-02 09:17:24,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 57 remaining) [2024-02-02 09:17:24,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 57 remaining) [2024-02-02 09:17:24,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 57 remaining) [2024-02-02 09:17:24,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 57 remaining) [2024-02-02 09:17:24,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 57 remaining) [2024-02-02 09:17:24,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 57 remaining) [2024-02-02 09:17:24,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 57 remaining) [2024-02-02 09:17:24,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 57 remaining) [2024-02-02 09:17:24,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 57 remaining) [2024-02-02 09:17:24,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 57 remaining) [2024-02-02 09:17:24,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 57 remaining) [2024-02-02 09:17:24,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 57 remaining) [2024-02-02 09:17:24,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 57 remaining) [2024-02-02 09:17:24,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 57 remaining) [2024-02-02 09:17:24,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 57 remaining) [2024-02-02 09:17:24,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 57 remaining) [2024-02-02 09:17:24,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 57 remaining) [2024-02-02 09:17:24,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 57 remaining) [2024-02-02 09:17:24,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 57 remaining) [2024-02-02 09:17:24,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 57 remaining) [2024-02-02 09:17:24,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 57 remaining) [2024-02-02 09:17:24,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 57 remaining) [2024-02-02 09:17:24,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 57 remaining) [2024-02-02 09:17:24,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 57 remaining) [2024-02-02 09:17:24,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 57 remaining) [2024-02-02 09:17:24,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (26 of 57 remaining) [2024-02-02 09:17:24,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 57 remaining) [2024-02-02 09:17:24,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 57 remaining) [2024-02-02 09:17:24,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 57 remaining) [2024-02-02 09:17:24,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 57 remaining) [2024-02-02 09:17:24,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 57 remaining) [2024-02-02 09:17:24,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 57 remaining) [2024-02-02 09:17:24,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 57 remaining) [2024-02-02 09:17:24,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 57 remaining) [2024-02-02 09:17:24,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 57 remaining) [2024-02-02 09:17:24,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 57 remaining) [2024-02-02 09:17:24,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 57 remaining) [2024-02-02 09:17:24,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 57 remaining) [2024-02-02 09:17:24,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 57 remaining) [2024-02-02 09:17:24,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 57 remaining) [2024-02-02 09:17:24,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 57 remaining) [2024-02-02 09:17:24,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 57 remaining) [2024-02-02 09:17:24,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 57 remaining) [2024-02-02 09:17:24,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 57 remaining) [2024-02-02 09:17:24,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 57 remaining) [2024-02-02 09:17:24,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 57 remaining) [2024-02-02 09:17:24,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 57 remaining) [2024-02-02 09:17:24,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 57 remaining) [2024-02-02 09:17:24,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 57 remaining) [2024-02-02 09:17:24,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 57 remaining) [2024-02-02 09:17:24,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 57 remaining) [2024-02-02 09:17:24,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 57 remaining) [2024-02-02 09:17:24,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-02-02 09:17:24,829 INFO L445 BasicCegarLoop]: Path program histogram: [20, 20, 10, 10, 10, 9, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:24,834 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-02 09:17:24,834 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 09:17:24,860 INFO L503 ceAbstractionStarter]: Automizer considered 30 witness invariants [2024-02-02 09:17:24,860 INFO L504 ceAbstractionStarter]: WitnessConsidered=30 [2024-02-02 09:17:24,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:17:24 BasicIcfg [2024-02-02 09:17:24,860 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 09:17:24,861 INFO L158 Benchmark]: Toolchain (without parser) took 249332.91ms. Allocated memory was 190.8MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 106.7MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 884.7MB. Max. memory is 16.1GB. [2024-02-02 09:17:24,861 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 104.9MB. Free memory is still 66.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:17:24,861 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 190.8MB. Free memory was 153.6MB in the beginning and 153.5MB in the end (delta: 103.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:17:24,861 INFO L158 Benchmark]: CACSL2BoogieTranslator took 767.73ms. Allocated memory is still 190.8MB. Free memory was 106.5MB in the beginning and 136.2MB in the end (delta: -29.7MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2024-02-02 09:17:24,861 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.72ms. Allocated memory is still 190.8MB. Free memory was 135.5MB in the beginning and 133.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:17:24,862 INFO L158 Benchmark]: Boogie Preprocessor took 41.94ms. Allocated memory is still 190.8MB. Free memory was 133.4MB in the beginning and 130.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-02 09:17:24,862 INFO L158 Benchmark]: RCFGBuilder took 728.44ms. Allocated memory is still 190.8MB. Free memory was 130.6MB in the beginning and 151.9MB in the end (delta: -21.3MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2024-02-02 09:17:24,862 INFO L158 Benchmark]: TraceAbstraction took 247740.43ms. Allocated memory was 190.8MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 151.9MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 928.5MB. Max. memory is 16.1GB. [2024-02-02 09:17:24,863 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 104.9MB. Free memory is still 66.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 190.8MB. Free memory was 153.6MB in the beginning and 153.5MB in the end (delta: 103.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 767.73ms. Allocated memory is still 190.8MB. Free memory was 106.5MB in the beginning and 136.2MB in the end (delta: -29.7MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.72ms. Allocated memory is still 190.8MB. Free memory was 135.5MB in the beginning and 133.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.94ms. Allocated memory is still 190.8MB. Free memory was 133.4MB in the beginning and 130.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 728.44ms. Allocated memory is still 190.8MB. Free memory was 130.6MB in the beginning and 151.9MB in the end (delta: -21.3MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. * TraceAbstraction took 247740.43ms. Allocated memory was 190.8MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 151.9MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 928.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 771]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p0_EAX = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L718] 0 int y = 0; [L760] 0 pthread_t t1925; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1925={5:0}, x=0, y=0] [L761] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_cnt],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]]]]] [L761] FCALL, FORK 0 pthread_create(&t1925, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1925={5:0}, x=0, y=0] [L762] 0 pthread_t t1926; [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L763] FCALL, FORK 0 pthread_create(&t1926, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=0, y=0] [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L722] 1 __unbuffered_p0_EAX = y [L723] 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[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L725] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L725] 1 x = 1 [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L727] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L728] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L736] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L729] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L737] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L737] 2 __unbuffered_p1_EAX = x [L738] 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[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L740] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L740] 2 y = 1 [L741] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L742] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L743] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L744] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L730] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L730] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L731] 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[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L745] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L745] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L746] 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[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L765] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L765] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L766] 0 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[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],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[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=1, y=1] [L767] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L767] RET 0 assume_abort_if_not(main$tmp_guard0) [L769] 0 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[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],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[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=1, y=1] [L771] 0 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[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],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[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=1, y=1] - 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: 729]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 731]: 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: 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: 744]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 745]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 747]: 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: 765]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 766]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 769]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 772]: 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: 763]: 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: 761]: 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: 247.6s, OverallIterations: 169, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 206.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14452 SdHoareTripleChecker+Valid, 32.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13154 mSDsluCounter, 3783 SdHoareTripleChecker+Invalid, 26.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3182 mSDsCounter, 2427 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48498 IncrementalHoareTripleChecker+Invalid, 50925 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2427 mSolverCounterUnsat, 601 mSDtfsCounter, 48498 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1538 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1531 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 17.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12904occurred in iteration=140, InterpolantAutomatonStates: 1483, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 38.1s InterpolantComputationTime, 3186 NumberOfCodeBlocks, 3186 NumberOfCodeBlocksAsserted, 169 NumberOfCheckSat, 2990 ConstructedInterpolants, 0 QuantifiedInterpolants, 78729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 168 InterpolantComputations, 168 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! [2024-02-02 09:17:24,915 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